| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| In the Linux kernel, the following vulnerability has been resolved:
interconnect: Fix locking for runpm vs reclaim
For cases where icc_bw_set() can be called in callbaths that could
deadlock against shrinker/reclaim, such as runpm resume, we need to
decouple the icc locking. Introduce a new icc_bw_lock for cases where
we need to serialize bw aggregation and update to decouple that from
paths that require memory allocation such as node/link creation/
destruction.
Fixes this lockdep splat:
======================================================
WARNING: possible circular locking dependency detected
6.2.0-rc8-debug+ #554 Not tainted
------------------------------------------------------
ring0/132 is trying to acquire lock:
ffffff80871916d0 (&gmu->lock){+.+.}-{3:3}, at: a6xx_pm_resume+0xf0/0x234
but task is already holding lock:
ffffffdb5aee57e8 (dma_fence_map){++++}-{0:0}, at: msm_job_run+0x68/0x150
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #4 (dma_fence_map){++++}-{0:0}:
__dma_fence_might_wait+0x74/0xc0
dma_resv_lockdep+0x1f4/0x2f4
do_one_initcall+0x104/0x2bc
kernel_init_freeable+0x344/0x34c
kernel_init+0x30/0x134
ret_from_fork+0x10/0x20
-> #3 (mmu_notifier_invalidate_range_start){+.+.}-{0:0}:
fs_reclaim_acquire+0x80/0xa8
slab_pre_alloc_hook.constprop.0+0x40/0x25c
__kmem_cache_alloc_node+0x60/0x1cc
__kmalloc+0xd8/0x100
topology_parse_cpu_capacity+0x8c/0x178
get_cpu_for_node+0x88/0xc4
parse_cluster+0x1b0/0x28c
parse_cluster+0x8c/0x28c
init_cpu_topology+0x168/0x188
smp_prepare_cpus+0x24/0xf8
kernel_init_freeable+0x18c/0x34c
kernel_init+0x30/0x134
ret_from_fork+0x10/0x20
-> #2 (fs_reclaim){+.+.}-{0:0}:
__fs_reclaim_acquire+0x3c/0x48
fs_reclaim_acquire+0x54/0xa8
slab_pre_alloc_hook.constprop.0+0x40/0x25c
__kmem_cache_alloc_node+0x60/0x1cc
__kmalloc+0xd8/0x100
kzalloc.constprop.0+0x14/0x20
icc_node_create_nolock+0x4c/0xc4
icc_node_create+0x38/0x58
qcom_icc_rpmh_probe+0x1b8/0x248
platform_probe+0x70/0xc4
really_probe+0x158/0x290
__driver_probe_device+0xc8/0xe0
driver_probe_device+0x44/0x100
__driver_attach+0xf8/0x108
bus_for_each_dev+0x78/0xc4
driver_attach+0x2c/0x38
bus_add_driver+0xd0/0x1d8
driver_register+0xbc/0xf8
__platform_driver_register+0x30/0x3c
qnoc_driver_init+0x24/0x30
do_one_initcall+0x104/0x2bc
kernel_init_freeable+0x344/0x34c
kernel_init+0x30/0x134
ret_from_fork+0x10/0x20
-> #1 (icc_lock){+.+.}-{3:3}:
__mutex_lock+0xcc/0x3c8
mutex_lock_nested+0x30/0x44
icc_set_bw+0x88/0x2b4
_set_opp_bw+0x8c/0xd8
_set_opp+0x19c/0x300
dev_pm_opp_set_opp+0x84/0x94
a6xx_gmu_resume+0x18c/0x804
a6xx_pm_resume+0xf8/0x234
adreno_runtime_resume+0x2c/0x38
pm_generic_runtime_resume+0x30/0x44
__rpm_callback+0x15c/0x174
rpm_callback+0x78/0x7c
rpm_resume+0x318/0x524
__pm_runtime_resume+0x78/0xbc
adreno_load_gpu+0xc4/0x17c
msm_open+0x50/0x120
drm_file_alloc+0x17c/0x228
drm_open_helper+0x74/0x118
drm_open+0xa0/0x144
drm_stub_open+0xd4/0xe4
chrdev_open+0x1b8/0x1e4
do_dentry_open+0x2f8/0x38c
vfs_open+0x34/0x40
path_openat+0x64c/0x7b4
do_filp_open+0x54/0xc4
do_sys_openat2+0x9c/0x100
do_sys_open+0x50/0x7c
__arm64_sys_openat+0x28/0x34
invoke_syscall+0x8c/0x128
el0_svc_common.constprop.0+0xa0/0x11c
do_el0_
---truncated--- |
| In the Linux kernel, the following vulnerability has been resolved:
block, bfq: Fix division by zero error on zero wsum
When the weighted sum is zero the calculation of limit causes
a division by zero error. Fix this by continuing to the next level.
This was discovered by running as root:
stress-ng --ioprio 0
Fixes divison by error oops:
[ 521.450556] divide error: 0000 [#1] SMP NOPTI
[ 521.450766] CPU: 2 PID: 2684464 Comm: stress-ng-iopri Not tainted 6.2.1-1280.native #1
[ 521.451117] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.1-0-g3208b098f51a-prebuilt.qemu.org 04/01/2014
[ 521.451627] RIP: 0010:bfqq_request_over_limit+0x207/0x400
[ 521.451875] Code: 01 48 8d 0c c8 74 0b 48 8b 82 98 00 00 00 48 8d 0c c8 8b 85 34 ff ff ff 48 89 ca 41 0f af 41 50 48 d1 ea 48 98 48 01 d0 31 d2 <48> f7 f1 41 39 41 48 89 85 34 ff ff ff 0f 8c 7b 01 00 00 49 8b 44
[ 521.452699] RSP: 0018:ffffb1af84eb3948 EFLAGS: 00010046
[ 521.452938] RAX: 000000000000003c RBX: 0000000000000000 RCX: 0000000000000000
[ 521.453262] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffb1af84eb3978
[ 521.453584] RBP: ffffb1af84eb3a30 R08: 0000000000000001 R09: ffff8f88ab8a4ba0
[ 521.453905] R10: 0000000000000000 R11: 0000000000000001 R12: ffff8f88ab8a4b18
[ 521.454224] R13: ffff8f8699093000 R14: 0000000000000001 R15: ffffb1af84eb3970
[ 521.454549] FS: 00005640b6b0b580(0000) GS:ffff8f88b3880000(0000) knlGS:0000000000000000
[ 521.454912] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 521.455170] CR2: 00007ffcbcae4e38 CR3: 00000002e46de001 CR4: 0000000000770ee0
[ 521.455491] PKRU: 55555554
[ 521.455619] Call Trace:
[ 521.455736] <TASK>
[ 521.455837] ? bfq_request_merge+0x3a/0xc0
[ 521.456027] ? elv_merge+0x115/0x140
[ 521.456191] bfq_limit_depth+0xc8/0x240
[ 521.456366] __blk_mq_alloc_requests+0x21a/0x2c0
[ 521.456577] blk_mq_submit_bio+0x23c/0x6c0
[ 521.456766] __submit_bio+0xb8/0x140
[ 521.457236] submit_bio_noacct_nocheck+0x212/0x300
[ 521.457748] submit_bio_noacct+0x1a6/0x580
[ 521.458220] submit_bio+0x43/0x80
[ 521.458660] ext4_io_submit+0x23/0x80
[ 521.459116] ext4_do_writepages+0x40a/0xd00
[ 521.459596] ext4_writepages+0x65/0x100
[ 521.460050] do_writepages+0xb7/0x1c0
[ 521.460492] __filemap_fdatawrite_range+0xa6/0x100
[ 521.460979] file_write_and_wait_range+0xbf/0x140
[ 521.461452] ext4_sync_file+0x105/0x340
[ 521.461882] __x64_sys_fsync+0x67/0x100
[ 521.462305] ? syscall_exit_to_user_mode+0x2c/0x1c0
[ 521.462768] do_syscall_64+0x3b/0xc0
[ 521.463165] entry_SYSCALL_64_after_hwframe+0x5a/0xc4
[ 521.463621] RIP: 0033:0x5640b6c56590
[ 521.464006] Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 80 3d 71 70 0e 00 00 74 17 b8 4a 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c |
| In the Linux kernel, the following vulnerability has been resolved:
scsi: mpi3mr: Fix an issue found by KASAN
Write only correct size (32 instead of 64 bytes). |
| In the Linux kernel, the following vulnerability has been resolved:
ACPICA: ACPICA: check null return of ACPI_ALLOCATE_ZEROED in acpi_db_display_objects
ACPICA commit 0d5f467d6a0ba852ea3aad68663cbcbd43300fd4
ACPI_ALLOCATE_ZEROED may fails, object_info might be null and will cause
null pointer dereference later. |
| In the Linux kernel, the following vulnerability has been resolved:
i2c: cadence: cdns_i2c_master_xfer(): Fix runtime PM leak on error path
The cdns_i2c_master_xfer() function gets a runtime PM reference when the
function is entered. This reference is released when the function is
exited. There is currently one error path where the function exits
directly, which leads to a leak of the runtime PM reference.
Make sure that this error path also releases the runtime PM reference. |
| In the Linux kernel, the following vulnerability has been resolved:
MIPS: KVM: Fix NULL pointer dereference
After commit 45c7e8af4a5e3f0bea4ac209 ("MIPS: Remove KVM_TE support") we
get a NULL pointer dereference when creating a KVM guest:
[ 146.243409] Starting KVM with MIPS VZ extensions
[ 149.849151] CPU 3 Unable to handle kernel paging request at virtual address 0000000000000300, epc == ffffffffc06356ec, ra == ffffffffc063568c
[ 149.849177] Oops[#1]:
[ 149.849182] CPU: 3 PID: 2265 Comm: qemu-system-mip Not tainted 6.4.0-rc3+ #1671
[ 149.849188] Hardware name: THTF CX TL630 Series/THTF-LS3A4000-7A1000-ML4A, BIOS KL4.1F.TF.D.166.201225.R 12/25/2020
[ 149.849192] $ 0 : 0000000000000000 000000007400cce0 0000000000400004 ffffffff8119c740
[ 149.849209] $ 4 : 000000007400cce1 000000007400cce1 0000000000000000 0000000000000000
[ 149.849221] $ 8 : 000000240058bb36 ffffffff81421ac0 0000000000000000 0000000000400dc0
[ 149.849233] $12 : 9800000102a07cc8 ffffffff80e40e38 0000000000000001 0000000000400dc0
[ 149.849245] $16 : 0000000000000000 9800000106cd0000 9800000106cd0000 9800000100cce000
[ 149.849257] $20 : ffffffffc0632b28 ffffffffc05b31b0 9800000100ccca00 0000000000400000
[ 149.849269] $24 : 9800000106cd09ce ffffffff802f69d0
[ 149.849281] $28 : 9800000102a04000 9800000102a07cd0 98000001106a8000 ffffffffc063568c
[ 149.849293] Hi : 00000335b2111e66
[ 149.849295] Lo : 6668d90061ae0ae9
[ 149.849298] epc : ffffffffc06356ec kvm_vz_vcpu_setup+0xc4/0x328 [kvm]
[ 149.849324] ra : ffffffffc063568c kvm_vz_vcpu_setup+0x64/0x328 [kvm]
[ 149.849336] Status: 7400cce3 KX SX UX KERNEL EXL IE
[ 149.849351] Cause : 1000000c (ExcCode 03)
[ 149.849354] BadVA : 0000000000000300
[ 149.849357] PrId : 0014c004 (ICT Loongson-3)
[ 149.849360] Modules linked in: kvm nfnetlink_queue nfnetlink_log nfnetlink fuse sha256_generic libsha256 cfg80211 rfkill binfmt_misc vfat fat snd_hda_codec_hdmi input_leds led_class snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core snd_pcm snd_timer snd serio_raw xhci_pci radeon drm_suballoc_helper drm_display_helper xhci_hcd ip_tables x_tables
[ 149.849432] Process qemu-system-mip (pid: 2265, threadinfo=00000000ae2982d2, task=0000000038e09ad4, tls=000000ffeba16030)
[ 149.849439] Stack : 9800000000000003 9800000100ccca00 9800000100ccc000 ffffffffc062cef4
[ 149.849453] 9800000102a07d18 c89b63a7ab338e00 0000000000000000 ffffffff811a0000
[ 149.849465] 0000000000000000 9800000106cd0000 ffffffff80e59938 98000001106a8920
[ 149.849476] ffffffff80e57f30 ffffffffc062854c ffffffff811a0000 9800000102bf4240
[ 149.849488] ffffffffc05b0000 ffffffff80e3a798 000000ff78000000 000000ff78000010
[ 149.849500] 0000000000000255 98000001021f7de0 98000001023f0078 ffffffff81434000
[ 149.849511] 0000000000000000 0000000000000000 9800000102ae0000 980000025e92ae28
[ 149.849523] 0000000000000000 c89b63a7ab338e00 0000000000000001 ffffffff8119dce0
[ 149.849535] 000000ff78000010 ffffffff804f3d3c 9800000102a07eb0 0000000000000255
[ 149.849546] 0000000000000000 ffffffff8049460c 000000ff78000010 0000000000000255
[ 149.849558] ...
[ 149.849565] Call Trace:
[ 149.849567] [<ffffffffc06356ec>] kvm_vz_vcpu_setup+0xc4/0x328 [kvm]
[ 149.849586] [<ffffffffc062cef4>] kvm_arch_vcpu_create+0x184/0x228 [kvm]
[ 149.849605] [<ffffffffc062854c>] kvm_vm_ioctl+0x64c/0xf28 [kvm]
[ 149.849623] [<ffffffff805209c0>] sys_ioctl+0xc8/0x118
[ 149.849631] [<ffffffff80219eb0>] syscall_common+0x34/0x58
The root cause is the deletion of kvm_mips_commpage_init() leaves vcpu
->arch.cop0 NULL. So fix it by making cop0 from a pointer to an embedded
object. |
| In the Linux kernel, the following vulnerability has been resolved:
af_unix: Fix data-race around unix_tot_inflight.
unix_tot_inflight is changed under spin_lock(unix_gc_lock), but
unix_release_sock() reads it locklessly.
Let's use READ_ONCE() for unix_tot_inflight.
Note that the writer side was marked by commit 9d6d7f1cb67c ("af_unix:
annote lockless accesses to unix_tot_inflight & gc_in_progress")
BUG: KCSAN: data-race in unix_inflight / unix_release_sock
write (marked) to 0xffffffff871852b8 of 4 bytes by task 123 on cpu 1:
unix_inflight+0x130/0x180 net/unix/scm.c:64
unix_attach_fds+0x137/0x1b0 net/unix/scm.c:123
unix_scm_to_skb net/unix/af_unix.c:1832 [inline]
unix_dgram_sendmsg+0x46a/0x14f0 net/unix/af_unix.c:1955
sock_sendmsg_nosec net/socket.c:724 [inline]
sock_sendmsg+0x148/0x160 net/socket.c:747
____sys_sendmsg+0x4e4/0x610 net/socket.c:2493
___sys_sendmsg+0xc6/0x140 net/socket.c:2547
__sys_sendmsg+0x94/0x140 net/socket.c:2576
__do_sys_sendmsg net/socket.c:2585 [inline]
__se_sys_sendmsg net/socket.c:2583 [inline]
__x64_sys_sendmsg+0x45/0x50 net/socket.c:2583
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x72/0xdc
read to 0xffffffff871852b8 of 4 bytes by task 4891 on cpu 0:
unix_release_sock+0x608/0x910 net/unix/af_unix.c:671
unix_release+0x59/0x80 net/unix/af_unix.c:1058
__sock_release+0x7d/0x170 net/socket.c:653
sock_close+0x19/0x30 net/socket.c:1385
__fput+0x179/0x5e0 fs/file_table.c:321
____fput+0x15/0x20 fs/file_table.c:349
task_work_run+0x116/0x1a0 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
exit_to_user_mode_prepare+0x174/0x180 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:297
do_syscall_64+0x4b/0x90 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x72/0xdc
value changed: 0x00000000 -> 0x00000001
Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 4891 Comm: systemd-coredum Not tainted 6.4.0-rc5-01219-gfa0e21fa4443 #5
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 |
| In the Linux kernel, the following vulnerability has been resolved:
net/mlx5e: Move representor neigh cleanup to profile cleanup_tx
For IP tunnel encapsulation in ECMP (Equal-Cost Multipath) mode, as
the flow is duplicated to the peer eswitch, the related neighbour
information on the peer uplink representor is created as well.
In the cited commit, eswitch devcom unpair is moved to uplink unload
API, specifically the profile->cleanup_tx. If there is a encap rule
offloaded in ECMP mode, when one eswitch does unpair (because of
unloading the driver, for instance), and the peer rule from the peer
eswitch is going to be deleted, the use-after-free error is triggered
while accessing neigh info, as it is already cleaned up in uplink's
profile->disable, which is before its profile->cleanup_tx.
To fix this issue, move the neigh cleanup to profile's cleanup_tx
callback, and after mlx5e_cleanup_uplink_rep_tx is called. The neigh
init is moved to init_tx for symmeter.
[ 2453.376299] BUG: KASAN: slab-use-after-free in mlx5e_rep_neigh_entry_release+0x109/0x3a0 [mlx5_core]
[ 2453.379125] Read of size 4 at addr ffff888127af9008 by task modprobe/2496
[ 2453.381542] CPU: 7 PID: 2496 Comm: modprobe Tainted: G B 6.4.0-rc7+ #15
[ 2453.383386] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
[ 2453.384335] Call Trace:
[ 2453.384625] <TASK>
[ 2453.384891] dump_stack_lvl+0x33/0x50
[ 2453.385285] print_report+0xc2/0x610
[ 2453.385667] ? __virt_addr_valid+0xb1/0x130
[ 2453.386091] ? mlx5e_rep_neigh_entry_release+0x109/0x3a0 [mlx5_core]
[ 2453.386757] kasan_report+0xae/0xe0
[ 2453.387123] ? mlx5e_rep_neigh_entry_release+0x109/0x3a0 [mlx5_core]
[ 2453.387798] mlx5e_rep_neigh_entry_release+0x109/0x3a0 [mlx5_core]
[ 2453.388465] mlx5e_rep_encap_entry_detach+0xa6/0xe0 [mlx5_core]
[ 2453.389111] mlx5e_encap_dealloc+0xa7/0x100 [mlx5_core]
[ 2453.389706] mlx5e_tc_tun_encap_dests_unset+0x61/0xb0 [mlx5_core]
[ 2453.390361] mlx5_free_flow_attr_actions+0x11e/0x340 [mlx5_core]
[ 2453.391015] ? complete_all+0x43/0xd0
[ 2453.391398] ? free_flow_post_acts+0x38/0x120 [mlx5_core]
[ 2453.392004] mlx5e_tc_del_fdb_flow+0x4ae/0x690 [mlx5_core]
[ 2453.392618] mlx5e_tc_del_fdb_peers_flow+0x308/0x370 [mlx5_core]
[ 2453.393276] mlx5e_tc_clean_fdb_peer_flows+0xf5/0x140 [mlx5_core]
[ 2453.393925] mlx5_esw_offloads_unpair+0x86/0x540 [mlx5_core]
[ 2453.394546] ? mlx5_esw_offloads_set_ns_peer.isra.0+0x180/0x180 [mlx5_core]
[ 2453.395268] ? down_write+0xaa/0x100
[ 2453.395652] mlx5_esw_offloads_devcom_event+0x203/0x530 [mlx5_core]
[ 2453.396317] mlx5_devcom_send_event+0xbb/0x190 [mlx5_core]
[ 2453.396917] mlx5_esw_offloads_devcom_cleanup+0xb0/0xd0 [mlx5_core]
[ 2453.397582] mlx5e_tc_esw_cleanup+0x42/0x120 [mlx5_core]
[ 2453.398182] mlx5e_rep_tc_cleanup+0x15/0x30 [mlx5_core]
[ 2453.398768] mlx5e_cleanup_rep_tx+0x6c/0x80 [mlx5_core]
[ 2453.399367] mlx5e_detach_netdev+0xee/0x120 [mlx5_core]
[ 2453.399957] mlx5e_netdev_change_profile+0x84/0x170 [mlx5_core]
[ 2453.400598] mlx5e_vport_rep_unload+0xe0/0xf0 [mlx5_core]
[ 2453.403781] mlx5_eswitch_unregister_vport_reps+0x15e/0x190 [mlx5_core]
[ 2453.404479] ? mlx5_eswitch_register_vport_reps+0x200/0x200 [mlx5_core]
[ 2453.405170] ? up_write+0x39/0x60
[ 2453.405529] ? kernfs_remove_by_name_ns+0xb7/0xe0
[ 2453.405985] auxiliary_bus_remove+0x2e/0x40
[ 2453.406405] device_release_driver_internal+0x243/0x2d0
[ 2453.406900] ? kobject_put+0x42/0x2d0
[ 2453.407284] bus_remove_device+0x128/0x1d0
[ 2453.407687] device_del+0x240/0x550
[ 2453.408053] ? waiting_for_supplier_show+0xe0/0xe0
[ 2453.408511] ? kobject_put+0xfa/0x2d0
[ 2453.408889] ? __kmem_cache_free+0x14d/0x280
[ 2453.409310] mlx5_rescan_drivers_locked.part.0+0xcd/0x2b0 [mlx5_core]
[ 2453.409973] mlx5_unregister_device+0x40/0x50 [mlx5_core]
[ 2453.410561] mlx5_uninit_one+0x3d/0x110 [mlx5_core]
[ 2453.411111] remove_one+0x89/0x130 [mlx5_core]
[ 24
---truncated--- |
| In the Linux kernel, the following vulnerability has been resolved:
net/net_failover: fix txq exceeding warning
The failover txq is inited as 16 queues.
when a packet is transmitted from the failover device firstly,
the failover device will select the queue which is returned from
the primary device if the primary device is UP and running.
If the primary device txq is bigger than the default 16,
it can lead to the following warning:
eth0 selects TX queue 18, but real number of TX queues is 16
The warning backtrace is:
[ 32.146376] CPU: 18 PID: 9134 Comm: chronyd Tainted: G E 6.2.8-1.el7.centos.x86_64 #1
[ 32.147175] Hardware name: Red Hat KVM, BIOS 1.10.2-3.el7_4.1 04/01/2014
[ 32.147730] Call Trace:
[ 32.147971] <TASK>
[ 32.148183] dump_stack_lvl+0x48/0x70
[ 32.148514] dump_stack+0x10/0x20
[ 32.148820] netdev_core_pick_tx+0xb1/0xe0
[ 32.149180] __dev_queue_xmit+0x529/0xcf0
[ 32.149533] ? __check_object_size.part.0+0x21c/0x2c0
[ 32.149967] ip_finish_output2+0x278/0x560
[ 32.150327] __ip_finish_output+0x1fe/0x2f0
[ 32.150690] ip_finish_output+0x2a/0xd0
[ 32.151032] ip_output+0x7a/0x110
[ 32.151337] ? __pfx_ip_finish_output+0x10/0x10
[ 32.151733] ip_local_out+0x5e/0x70
[ 32.152054] ip_send_skb+0x19/0x50
[ 32.152366] udp_send_skb.isra.0+0x163/0x3a0
[ 32.152736] udp_sendmsg+0xba8/0xec0
[ 32.153060] ? __folio_memcg_unlock+0x25/0x60
[ 32.153445] ? __pfx_ip_generic_getfrag+0x10/0x10
[ 32.153854] ? sock_has_perm+0x85/0xa0
[ 32.154190] inet_sendmsg+0x6d/0x80
[ 32.154508] ? inet_sendmsg+0x6d/0x80
[ 32.154838] sock_sendmsg+0x62/0x70
[ 32.155152] ____sys_sendmsg+0x134/0x290
[ 32.155499] ___sys_sendmsg+0x81/0xc0
[ 32.155828] ? _get_random_bytes.part.0+0x79/0x1a0
[ 32.156240] ? ip4_datagram_release_cb+0x5f/0x1e0
[ 32.156649] ? get_random_u16+0x69/0xf0
[ 32.156989] ? __fget_light+0xcf/0x110
[ 32.157326] __sys_sendmmsg+0xc4/0x210
[ 32.157657] ? __sys_connect+0xb7/0xe0
[ 32.157995] ? __audit_syscall_entry+0xce/0x140
[ 32.158388] ? syscall_trace_enter.isra.0+0x12c/0x1a0
[ 32.158820] __x64_sys_sendmmsg+0x24/0x30
[ 32.159171] do_syscall_64+0x38/0x90
[ 32.159493] entry_SYSCALL_64_after_hwframe+0x72/0xdc
Fix that by reducing txq number as the non-existent primary-dev does. |
| In the Linux kernel, the following vulnerability has been resolved:
drm/amd: Fix an out of bounds error in BIOS parser
The array is hardcoded to 8 in atomfirmware.h, but firmware provides
a bigger one sometimes. Deferencing the larger array causes an out
of bounds error.
commit 4fc1ba4aa589 ("drm/amd/display: fix array index out of bound error
in bios parser") fixed some of this, but there are two other cases
not covered by it. Fix those as well. |
| In the Linux kernel, the following vulnerability has been resolved:
nios2: ensure that memblock.current_limit is set when setting pfn limits
On nios2, with CONFIG_FLATMEM set, the kernel relies on
memblock_get_current_limit() to determine the limits of mem_map, in
particular for max_low_pfn.
Unfortunately, memblock.current_limit is only default initialized to
MEMBLOCK_ALLOC_ANYWHERE at this point of the bootup, potentially leading
to situations where max_low_pfn can erroneously exceed the value of
max_pfn and, thus, the valid range of available DRAM.
This can in turn cause kernel-level paging failures, e.g.:
[ 76.900000] Unable to handle kernel paging request at virtual address 20303000
[ 76.900000] ea = c0080890, ra = c000462c, cause = 14
[ 76.900000] Kernel panic - not syncing: Oops
[ 76.900000] ---[ end Kernel panic - not syncing: Oops ]---
This patch fixes this by pre-calculating memblock.current_limit
based on the upper limits of the available memory ranges via
adjust_lowmem_bounds, a simplified version of the equivalent
implementation within the arm architecture. |
| In the Linux kernel, the following vulnerability has been resolved:
hfs: fix KMSAN uninit-value issue in hfs_find_set_zero_bits()
The syzbot reported issue in hfs_find_set_zero_bits():
=====================================================
BUG: KMSAN: uninit-value in hfs_find_set_zero_bits+0x74d/0xb60 fs/hfs/bitmap.c:45
hfs_find_set_zero_bits+0x74d/0xb60 fs/hfs/bitmap.c:45
hfs_vbm_search_free+0x13c/0x5b0 fs/hfs/bitmap.c:151
hfs_extend_file+0x6a5/0x1b00 fs/hfs/extent.c:408
hfs_get_block+0x435/0x1150 fs/hfs/extent.c:353
__block_write_begin_int+0xa76/0x3030 fs/buffer.c:2151
block_write_begin fs/buffer.c:2262 [inline]
cont_write_begin+0x10e1/0x1bc0 fs/buffer.c:2601
hfs_write_begin+0x85/0x130 fs/hfs/inode.c:52
cont_expand_zero fs/buffer.c:2528 [inline]
cont_write_begin+0x35a/0x1bc0 fs/buffer.c:2591
hfs_write_begin+0x85/0x130 fs/hfs/inode.c:52
hfs_file_truncate+0x1d6/0xe60 fs/hfs/extent.c:494
hfs_inode_setattr+0x964/0xaa0 fs/hfs/inode.c:654
notify_change+0x1993/0x1aa0 fs/attr.c:552
do_truncate+0x28f/0x310 fs/open.c:68
do_ftruncate+0x698/0x730 fs/open.c:195
do_sys_ftruncate fs/open.c:210 [inline]
__do_sys_ftruncate fs/open.c:215 [inline]
__se_sys_ftruncate fs/open.c:213 [inline]
__x64_sys_ftruncate+0x11b/0x250 fs/open.c:213
x64_sys_call+0xfe3/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:78
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Uninit was created at:
slab_post_alloc_hook mm/slub.c:4154 [inline]
slab_alloc_node mm/slub.c:4197 [inline]
__kmalloc_cache_noprof+0x7f7/0xed0 mm/slub.c:4354
kmalloc_noprof include/linux/slab.h:905 [inline]
hfs_mdb_get+0x1cc8/0x2a90 fs/hfs/mdb.c:175
hfs_fill_super+0x3d0/0xb80 fs/hfs/super.c:337
get_tree_bdev_flags+0x6e3/0x920 fs/super.c:1681
get_tree_bdev+0x38/0x50 fs/super.c:1704
hfs_get_tree+0x35/0x40 fs/hfs/super.c:388
vfs_get_tree+0xb0/0x5c0 fs/super.c:1804
do_new_mount+0x738/0x1610 fs/namespace.c:3902
path_mount+0x6db/0x1e90 fs/namespace.c:4226
do_mount fs/namespace.c:4239 [inline]
__do_sys_mount fs/namespace.c:4450 [inline]
__se_sys_mount+0x6eb/0x7d0 fs/namespace.c:4427
__x64_sys_mount+0xe4/0x150 fs/namespace.c:4427
x64_sys_call+0xfa7/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:166
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
CPU: 1 UID: 0 PID: 12609 Comm: syz.1.2692 Not tainted 6.16.0-syzkaller #0 PREEMPT(none)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
=====================================================
The HFS_SB(sb)->bitmap buffer is allocated in hfs_mdb_get():
HFS_SB(sb)->bitmap = kmalloc(8192, GFP_KERNEL);
Finally, it can trigger the reported issue because kmalloc()
doesn't clear the allocated memory. If allocated memory contains
only zeros, then everything will work pretty fine.
But if the allocated memory contains the "garbage", then
it can affect the bitmap operations and it triggers
the reported issue.
This patch simply exchanges the kmalloc() on kzalloc()
with the goal to guarantee the correctness of bitmap operations.
Because, newly created allocation bitmap should have all
available blocks free. Potentially, initialization bitmap's read
operation could not fill the whole allocated memory and
"garbage" in the not initialized memory will be the reason of
volume coruptions and file system driver bugs. |
| In the Linux kernel, the following vulnerability has been resolved:
erofs: fix crafted invalid cases for encoded extents
Robert recently reported two corrupted images that can cause system
crashes, which are related to the new encoded extents introduced
in Linux 6.15:
- The first one [1] has plen != 0 (e.g. plen == 0x2000000) but
(plen & Z_EROFS_EXTENT_PLEN_MASK) == 0. It is used to represent
special extents such as sparse extents (!EROFS_MAP_MAPPED), but
previously only plen == 0 was handled;
- The second one [2] has pa 0xffffffffffdcffed and plen 0xb4000,
then "cur [0xfffffffffffff000] += bvec.bv_len [0x1000]" in
"} while ((cur += bvec.bv_len) < end);" wraps around, causing an
out-of-bound access of pcl->compressed_bvecs[] in
z_erofs_submit_queue(). EROFS only supports 48-bit physical block
addresses (up to 1EiB for 4k blocks), so add a sanity check to
enforce this. |
| In the Linux kernel, the following vulnerability has been resolved:
net: phy: micrel: always set shared->phydev for LAN8814
Currently, during the LAN8814 PTP probe shared->phydev is only set if PTP
clock gets actually set, otherwise the function will return before setting
it.
This is an issue as shared->phydev is unconditionally being used when IRQ
is being handled, especially in lan8814_gpio_process_cap and since it was
not set it will cause a NULL pointer exception and crash the kernel.
So, simply always set shared->phydev to avoid the NULL pointer exception. |
| In the Linux kernel, the following vulnerability has been resolved:
btrfs: directly free partially initialized fs_info in btrfs_check_leaked_roots()
If fs_info->super_copy or fs_info->super_for_commit allocated failed in
btrfs_get_tree_subvol(), then no need to call btrfs_free_fs_info().
Otherwise btrfs_check_leaked_roots() would access NULL pointer because
fs_info->allocated_roots had not been initialised.
syzkaller reported the following information:
------------[ cut here ]------------
BUG: unable to handle page fault for address: fffffffffffffbb0
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 64c9067 P4D 64c9067 PUD 64cb067 PMD 0
Oops: Oops: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 1402 Comm: syz.1.35 Not tainted 6.15.8 #4 PREEMPT(lazy)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), (...)
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline]
RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline]
RIP: 0010:atomic_read include/linux/atomic/atomic-instrumented.h:33 [inline]
RIP: 0010:refcount_read include/linux/refcount.h:170 [inline]
RIP: 0010:btrfs_check_leaked_roots+0x18f/0x2c0 fs/btrfs/disk-io.c:1230
[...]
Call Trace:
<TASK>
btrfs_free_fs_info+0x310/0x410 fs/btrfs/disk-io.c:1280
btrfs_get_tree_subvol+0x592/0x6b0 fs/btrfs/super.c:2029
btrfs_get_tree+0x63/0x80 fs/btrfs/super.c:2097
vfs_get_tree+0x98/0x320 fs/super.c:1759
do_new_mount+0x357/0x660 fs/namespace.c:3899
path_mount+0x716/0x19c0 fs/namespace.c:4226
do_mount fs/namespace.c:4239 [inline]
__do_sys_mount fs/namespace.c:4450 [inline]
__se_sys_mount fs/namespace.c:4427 [inline]
__x64_sys_mount+0x28c/0x310 fs/namespace.c:4427
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x92/0x180 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f032eaffa8d
[...] |
| In the Linux kernel, the following vulnerability has been resolved:
binder: fix memory leak in binder_init()
In binder_init(), the destruction of binder_alloc_shrinker_init() is not
performed in the wrong path, which will cause memory leaks. So this commit
introduces binder_alloc_shrinker_exit() and calls it in the wrong path to
fix that. |
| In the Linux kernel, the following vulnerability has been resolved:
RDMA/core: Fix GID entry ref leak when create_ah fails
If AH create request fails, release sgid_attr to avoid GID entry
referrence leak reported while releasing GID table |
| In the Linux kernel, the following vulnerability has been resolved:
scsi: mpi3mr: Fix missing mrioc->evtack_cmds initialization
Commit c1af985d27da ("scsi: mpi3mr: Add Event acknowledgment logic")
introduced an array mrioc->evtack_cmds but initialization of the array
elements was missed. They are just zero cleared. The function
mpi3mr_complete_evt_ack() refers host_tag field of the elements. Due to the
zero value of the host_tag field, the function calls clear_bit() for
mrico->evtack_cmds_bitmap with wrong bit index. This results in memory
access to invalid address and "BUG: KASAN: use-after-free". This BUG was
observed at eHBA-9600 firmware update to version 8.3.1.0. To fix it, add
the missing initialization of mrioc->evtack_cmds. |
| In the Linux kernel, the following vulnerability has been resolved:
platform/x86: alienware-wmi-wmax: Fix NULL pointer dereference in sleep handlers
Devices without the AWCC interface don't initialize `awcc`. Add a check
before dereferencing it in sleep handlers. |
| In the Linux kernel, the following vulnerability has been resolved:
m68k: Only force 030 bus error if PC not in exception table
__get_kernel_nofault() does copy data in supervisor mode when
forcing a task backtrace log through /proc/sysrq_trigger.
This is expected cause a bus error exception on e.g. NULL
pointer dereferencing when logging a kernel task has no
workqueue associated. This bus error ought to be ignored.
Our 030 bus error handler is ill equipped to deal with this:
Whenever ssw indicates a kernel mode access on a data fault,
we don't even attempt to handle the fault and instead always
send a SEGV signal (or panic). As a result, the check
for exception handling at the fault PC (buried in
send_sig_fault() which gets called from do_page_fault()
eventually) is never used.
In contrast, both 040 and 060 access error handlers do not
care whether a fault happened on supervisor mode access,
and will call do_page_fault() on those, ultimately honoring
the exception table.
Add a check in bus_error030 to call do_page_fault() in case
we do have an entry for the fault PC in our exception table.
I had attempted a fix for this earlier in 2019 that did rely
on testing pagefault_disabled() (see link below) to achieve
the same thing, but this patch should be more generic.
Tested on 030 Atari Falcon. |
