{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-52991", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-03-27T16:40:15.741Z", "datePublished": "2025-03-27T16:43:26.991Z", "dateUpdated": "2025-03-27T16:43:26.991Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-03-27T16:43:26.991Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: fix NULL pointer in skb_segment_list\n\nCommit 3a1296a38d0c (\"net: Support GRO/GSO fraglist chaining.\")\nintroduced UDP listifyed GRO. The segmentation relies on frag_list being\nuntouched when passing through the network stack. This assumption can be\nbroken sometimes, where frag_list itself gets pulled into linear area,\nleaving frag_list being NULL. When this happens it can trigger\nfollowing NULL pointer dereference, and panic the kernel. Reverse the\ntest condition should fix it.\n\n[19185.577801][ C1] BUG: kernel NULL pointer dereference, address:\n...\n[19185.663775][ C1] RIP: 0010:skb_segment_list+0x1cc/0x390\n...\n[19185.834644][ C1] Call Trace:\n[19185.841730][ C1] <TASK>\n[19185.848563][ C1] __udp_gso_segment+0x33e/0x510\n[19185.857370][ C1] inet_gso_segment+0x15b/0x3e0\n[19185.866059][ C1] skb_mac_gso_segment+0x97/0x110\n[19185.874939][ C1] __skb_gso_segment+0xb2/0x160\n[19185.883646][ C1] udp_queue_rcv_skb+0xc3/0x1d0\n[19185.892319][ C1] udp_unicast_rcv_skb+0x75/0x90\n[19185.900979][ C1] ip_protocol_deliver_rcu+0xd2/0x200\n[19185.910003][ C1] ip_local_deliver_finish+0x44/0x60\n[19185.918757][ C1] __netif_receive_skb_one_core+0x8b/0xa0\n[19185.927834][ C1] process_backlog+0x88/0x130\n[19185.935840][ C1] __napi_poll+0x27/0x150\n[19185.943447][ C1] net_rx_action+0x27e/0x5f0\n[19185.951331][ C1] ? mlx5_cq_tasklet_cb+0x70/0x160 [mlx5_core]\n[19185.960848][ C1] __do_softirq+0xbc/0x25d\n[19185.968607][ C1] irq_exit_rcu+0x83/0xb0\n[19185.976247][ C1] common_interrupt+0x43/0xa0\n[19185.984235][ C1] asm_common_interrupt+0x22/0x40\n...\n[19186.094106][ C1] </TASK>"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/core/skbuff.c"], "versions": [{"version": "3a1296a38d0cf62bffb9a03c585cbd5dbf15d596", "lessThan": "6446369fb9f083ce032448c5047da08e298b22e6", "status": "affected", "versionType": "git"}, {"version": "3a1296a38d0cf62bffb9a03c585cbd5dbf15d596", "lessThan": "046de74f9af92ae9ffce75fa22a1795223f4fb54", "status": "affected", "versionType": "git"}, {"version": "3a1296a38d0cf62bffb9a03c585cbd5dbf15d596", "lessThan": "888dad6f3e85e3b2f8389bd6478f181efc72534d", "status": "affected", "versionType": "git"}, {"version": "3a1296a38d0cf62bffb9a03c585cbd5dbf15d596", "lessThan": "876e8ca8366735a604bac86ff7e2732fc9d85d2d", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/core/skbuff.c"], "versions": [{"version": "5.6", "status": "affected"}, {"version": "0", "lessThan": "5.6", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.167", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.92", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.10", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/6446369fb9f083ce032448c5047da08e298b22e6"}, {"url": "https://git.kernel.org/stable/c/046de74f9af92ae9ffce75fa22a1795223f4fb54"}, {"url": "https://git.kernel.org/stable/c/888dad6f3e85e3b2f8389bd6478f181efc72534d"}, {"url": "https://git.kernel.org/stable/c/876e8ca8366735a604bac86ff7e2732fc9d85d2d"}], "title": "net: fix NULL pointer in skb_segment_list", "x_generator": {"engine": "bippy-5f407fcff5a0"}}}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "101645FF-CEF8-4860-A44D-A0DA5F0D4E5C", "versionEndExcluding": "5.10.167", "versionStartIncluding": "5.6", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "82E7FA6E-E503-40DE-995C-EB8E2C9CDAE3", "versionEndExcluding": "5.15.92", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "482D2612-A4D4-4A68-AC23-52F6BE89878B", "versionEndExcluding": "6.1.10", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*", "matchCriteriaId": "FF501633-2F44-4913-A8EE-B021929F49F6", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:*", "matchCriteriaId": "2BDA597B-CAC1-4DF0-86F0-42E142C654E9", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*", "matchCriteriaId": "725C78C9-12CE-406F-ABE8-0813A01D66E8", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.2:rc4:*:*:*:*:*:*", "matchCriteriaId": "A127C155-689C-4F67-B146-44A57F4BFD85", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.2:rc5:*:*:*:*:*:*", "matchCriteriaId": "D34127CC-68F5-4703-A5F6-5006F803E4AE", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.2:rc6:*:*:*:*:*:*", "matchCriteriaId": "4AB8D555-648E-4F2F-98BD-3E7F45BD12A8", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: fix NULL pointer in skb_segment_list\n\nCommit 3a1296a38d0c (\"net: Support GRO/GSO fraglist chaining.\")\nintroduced UDP listifyed GRO. The segmentation relies on frag_list being\nuntouched when passing through the network stack. This assumption can be\nbroken sometimes, where frag_list itself gets pulled into linear area,\nleaving frag_list being NULL. When this happens it can trigger\nfollowing NULL pointer dereference, and panic the kernel. Reverse the\ntest condition should fix it.\n\n[19185.577801][ C1] BUG: kernel NULL pointer dereference, address:\n...\n[19185.663775][ C1] RIP: 0010:skb_segment_list+0x1cc/0x390\n...\n[19185.834644][ C1] Call Trace:\n[19185.841730][ C1] <TASK>\n[19185.848563][ C1] __udp_gso_segment+0x33e/0x510\n[19185.857370][ C1] inet_gso_segment+0x15b/0x3e0\n[19185.866059][ C1] skb_mac_gso_segment+0x97/0x110\n[19185.874939][ C1] __skb_gso_segment+0xb2/0x160\n[19185.883646][ C1] udp_queue_rcv_skb+0xc3/0x1d0\n[19185.892319][ C1] udp_unicast_rcv_skb+0x75/0x90\n[19185.900979][ C1] ip_protocol_deliver_rcu+0xd2/0x200\n[19185.910003][ C1] ip_local_deliver_finish+0x44/0x60\n[19185.918757][ C1] __netif_receive_skb_one_core+0x8b/0xa0\n[19185.927834][ C1] process_backlog+0x88/0x130\n[19185.935840][ C1] __napi_poll+0x27/0x150\n[19185.943447][ C1] net_rx_action+0x27e/0x5f0\n[19185.951331][ C1] ? mlx5_cq_tasklet_cb+0x70/0x160 [mlx5_core]\n[19185.960848][ C1] __do_softirq+0xbc/0x25d\n[19185.968607][ C1] irq_exit_rcu+0x83/0xb0\n[19185.976247][ C1] common_interrupt+0x43/0xa0\n[19185.984235][ C1] asm_common_interrupt+0x22/0x40\n...\n[19186.094106][ C1] </TASK>"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: correcci\u00f3n de puntero nulo en skb_segment_list. El commit 3a1296a38d0c (\"net: Compatibilidad con encadenamiento de fraglist GRO/GSO\") introdujo GRO con lista UDP. La segmentaci\u00f3n depende de que frag_list permanezca intacto al pasar por la pila de red. Esta suposici\u00f3n puede fallar a veces, ya que frag_list se arrastra al \u00e1rea lineal, dejando frag_list como nulo. Cuando esto sucede, puede desencadenar la consiguiente desreferencia de puntero nulo y generar un p\u00e1nico en el kernel. Revertir la condici\u00f3n de prueba deber\u00eda solucionarlo. [19185.577801][ C1] ERROR: desreferencia de puntero NULL del n\u00facleo, direcci\u00f3n: ... [19185.663775][ C1] RIP: 0010:skb_segment_list+0x1cc/0x390 ... [19185.834644][ C1] Rastreo de llamadas: [19185.841730][ C1] [19185.848563][ C1] __udp_gso_segment+0x33e/0x510 [19185.857370][ C1] inet_gso_segment+0x15b/0x3e0 [19185.866059][ C1] skb_mac_gso_segment+0x97/0x110 [19185.874939][ C1] __skb_gso_segment+0xb2/0x160 [19185.883646][ C1] udp_queue_rcv_skb+0xc3/0x1d0 [19185.892319][ C1] udp_unicast_rcv_skb+0x75/0x90 [19185.900979][ C1] ip_protocol_deliver_rcu+0xd2/0x200 [19185.910003][ C1] ip_local_deliver_finish+0x44/0x60 [19185.918757][ C1] __netif_receive_skb_one_core+0x8b/0xa0 [19185.927834][ C1] registro_de_proceso+0x88/0x130 [19185.935840][ C1] __napi_poll+0x27/0x150 [19185.943447][ C1] acci\u00f3n_de_rx_net+0x27e/0x5f0 [19185.951331][ C1] ? mlx5_cq_tasklet_cb+0x70/0x160 [mlx5_core] [19185.960848][ C1] __do_softirq+0xbc/0x25d [19185.968607][ C1] irq_exit_rcu+0x83/0xb0 [19185.976247][ C1] common_interrupt+0x43/0xa0 [19185.984235][ C1] asm_common_interrupt+0x22/0x40 ... [19186.094106][ C1] "}], "id": "CVE-2023-52991", "lastModified": "2025-04-15T14:32:09.260", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-03-27T17:15:46.540", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/046de74f9af92ae9ffce75fa22a1795223f4fb54"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6446369fb9f083ce032448c5047da08e298b22e6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/876e8ca8366735a604bac86ff7e2732fc9d85d2d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/888dad6f3e85e3b2f8389bd6478f181efc72534d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: net: fix NULL pointer in skb_segment_list", "id": "2355500", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2355500"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: fix NULL pointer in skb_segment_list\nCommit 3a1296a38d0c (\"net: Support GRO/GSO fraglist chaining.\")\nintroduced UDP listifyed GRO. The segmentation relies on frag_list being\nuntouched when passing through the network stack. This assumption can be\nbroken sometimes, where frag_list itself gets pulled into linear area,\nleaving frag_list being NULL. When this happens it can trigger\nfollowing NULL pointer dereference, and panic the kernel. Reverse the\ntest condition should fix it.\n[19185.577801][ C1] BUG: kernel NULL pointer dereference, address:\n...\n[19185.663775][ C1] RIP: 0010:skb_segment_list+0x1cc/0x390\n...\n[19185.834644][ C1] Call Trace:\n[19185.841730][ C1] <TASK>\n[19185.848563][ C1] __udp_gso_segment+0x33e/0x510\n[19185.857370][ C1] inet_gso_segment+0x15b/0x3e0\n[19185.866059][ C1] skb_mac_gso_segment+0x97/0x110\n[19185.874939][ C1] __skb_gso_segment+0xb2/0x160\n[19185.883646][ C1] udp_queue_rcv_skb+0xc3/0x1d0\n[19185.892319][ C1] udp_unicast_rcv_skb+0x75/0x90\n[19185.900979][ C1] ip_protocol_deliver_rcu+0xd2/0x200\n[19185.910003][ C1] ip_local_deliver_finish+0x44/0x60\n[19185.918757][ C1] __netif_receive_skb_one_core+0x8b/0xa0\n[19185.927834][ C1] process_backlog+0x88/0x130\n[19185.935840][ C1] __napi_poll+0x27/0x150\n[19185.943447][ C1] net_rx_action+0x27e/0x5f0\n[19185.951331][ C1] ? mlx5_cq_tasklet_cb+0x70/0x160 [mlx5_core]\n[19185.960848][ C1] __do_softirq+0xbc/0x25d\n[19185.968607][ C1] irq_exit_rcu+0x83/0xb0\n[19185.976247][ C1] common_interrupt+0x43/0xa0\n[19185.984235][ C1] asm_common_interrupt+0x22/0x40\n...\n[19186.094106][ C1] </TASK>"], "name": "CVE-2023-52991", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-03-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-52991\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-52991\nhttps://lore.kernel.org/linux-cve-announce/2025032709-CVE-2023-52991-6358@gregkh/T"], "threat_severity": "Moderate"}