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{"acknowledgement": "This issue was discovered by Jason Wang (Red Hat).", "affected_release": [{"advisory": "RHSA-2016:0855", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "kernel-0:2.6.32-642.el6", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2016-05-10T00:00:00Z"}, {"advisory": "RHSA-2015:1977", "cpe": "cpe:/a:redhat:rhel_extras_rt:7", "package": "kernel-rt-0:3.10.0-229.20.1.rt56.141.14.el7_1", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2015-11-03T00:00:00Z"}, {"advisory": "RHSA-2015:1978", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "kernel-0:3.10.0-229.20.1.ael7b", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2015-11-03T00:00:00Z"}], "bugzilla": {"description": "kernel: buffer overflow with fraglist larger than MAX_SKB_FRAGS + 2 in virtio-net", "id": "1243852", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1243852"}, "csaw": false, "cvss": {"cvss_base_score": "6.8", "cvss_scoring_vector": "AV:A/AC:H/Au:N/C:C/I:C/A:C", "status": "verified"}, "cwe": "CWE-122", "details": ["The virtnet_probe function in drivers/net/virtio_net.c in the Linux kernel before 4.2 attempts to support a FRAGLIST feature without proper memory allocation, which allows guest OS users to cause a denial of service (buffer overflow and memory corruption) via a crafted sequence of fragmented packets.", "A buffer overflow flaw was found in the way the Linux kernel's virtio-net subsystem handled certain fraglists when the GRO (Generic Receive Offload) functionality was enabled in a bridged network configuration. An attacker on the local network could potentially use this flaw to crash the system, or, although unlikely, elevate their privileges on the system."], "name": "CVE-2015-5156", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/a:redhat:enterprise_mrg:2", "fix_state": "Not affected", "package_name": "realtime-kernel", "product_name": "Red Hat Enterprise MRG 2"}], "public_date": "2015-08-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2015-5156\nhttps://nvd.nist.gov/vuln/detail/CVE-2015-5156"], "statement": "This issue did not affect the Linux kernel packages as shipped with Red Hat Enterprise MRG 2.\nThis issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 5. Red Hat Enterprise Linux 5 is now in Production 3 Phase of the support and maintenance life cycle. This has been rated as having Moderate security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.", "threat_severity": "Moderate"}