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CVE-2022-49863 (GCVE-0-2022-49863)

Vulnerability from cvelistv5 – Published: 2025-05-01 14:10 – Updated: 2026-05-23 15:23
VLAI
Title
can: af_can: fix NULL pointer dereference in can_rx_register()
Summary
In the Linux kernel, the following vulnerability has been resolved: can: af_can: fix NULL pointer dereference in can_rx_register() It causes NULL pointer dereference when testing as following: (a) use syscall(__NR_socket, 0x10ul, 3ul, 0) to create netlink socket. (b) use syscall(__NR_sendmsg, ...) to create bond link device and vxcan link device, and bind vxcan device to bond device (can also use ifenslave command to bind vxcan device to bond device). (c) use syscall(__NR_socket, 0x1dul, 3ul, 1) to create CAN socket. (d) use syscall(__NR_bind, ...) to bind the bond device to CAN socket. The bond device invokes the can-raw protocol registration interface to receive CAN packets. However, ml_priv is not allocated to the dev, dev_rcv_lists is assigned to NULL in can_rx_register(). In this case, it will occur the NULL pointer dereference issue. The following is the stack information: BUG: kernel NULL pointer dereference, address: 0000000000000008 PGD 122a4067 P4D 122a4067 PUD 1223c067 PMD 0 Oops: 0000 [#1] PREEMPT SMP RIP: 0010:can_rx_register+0x12d/0x1e0 Call Trace: <TASK> raw_enable_filters+0x8d/0x120 raw_enable_allfilters+0x3b/0x130 raw_bind+0x118/0x4f0 __sys_bind+0x163/0x1a0 __x64_sys_bind+0x1e/0x30 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x63/0xcd </TASK>
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 16:11 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 4ac1feff6ea6495cbfd336f4438a6c6d140544a6 , < afab4655750fcb3fca359bc7d7214e3d634cdf9c (git)
Affected: 1a5751d58b14195f763b8c1d9ef33fb8a93e95e7 , < d68fa77ee3d03bad6fe84e89759ddf7005f9e9c6 (git)
Affected: 4e096a18867a5a989b510f6999d9c6b6622e8f7b , < 261178a1c2623077d62e374a75c195e6c99a6f05 (git)
Affected: 4e096a18867a5a989b510f6999d9c6b6622e8f7b , < a8055677b054bc2bb78beb1080fdc2dc5158c2fe (git)
Affected: 4e096a18867a5a989b510f6999d9c6b6622e8f7b , < 8aa59e355949442c408408c2d836e561794c40a1 (git)
Affected: 96340078d50a54f6a1252c62596bc44321c8bff9 (git)
Affected: 5.4.110 , < 5.4.225 (semver)
Affected: 5.10.28 , < 5.10.155 (semver)
Affected: 5.11.12 , < 5.12 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 5.12
Unaffected: 0 , < 5.12 (semver)
Unaffected: 5.4.225 , ≤ 5.4.* (semver)
Unaffected: 5.10.155 , ≤ 5.10.* (semver)
Unaffected: 5.15.79 , ≤ 5.15.* (semver)
Unaffected: 6.0.9 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: af_can: fix NULL pointer dereference in can_rx_register()\n\nIt causes NULL pointer dereference when testing as following:\n(a) use syscall(__NR_socket, 0x10ul, 3ul, 0) to create netlink socket.\n(b) use syscall(__NR_sendmsg, ...) to create bond link device and vxcan\n    link device, and bind vxcan device to bond device (can also use\n    ifenslave command to bind vxcan device to bond device).\n(c) use syscall(__NR_socket, 0x1dul, 3ul, 1) to create CAN socket.\n(d) use syscall(__NR_bind, ...) to bind the bond device to CAN socket.\n\nThe bond device invokes the can-raw protocol registration interface to\nreceive CAN packets. However, ml_priv is not allocated to the dev,\ndev_rcv_lists is assigned to NULL in can_rx_register(). In this case,\nit will occur the NULL pointer dereference issue.\n\nThe following is the stack information:\nBUG: kernel NULL pointer dereference, address: 0000000000000008\nPGD 122a4067 P4D 122a4067 PUD 1223c067 PMD 0\nOops: 0000 [#1] PREEMPT SMP\nRIP: 0010:can_rx_register+0x12d/0x1e0\nCall Trace:\n\u003cTASK\u003e\nraw_enable_filters+0x8d/0x120\nraw_enable_allfilters+0x3b/0x130\nraw_bind+0x118/0x4f0\n__sys_bind+0x163/0x1a0\n__x64_sys_bind+0x1e/0x30\ndo_syscall_64+0x35/0x80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\u003c/TASK\u003e"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49863\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-01T15:16:11.203\",\"lastModified\":\"2026-06-17T05:19:20.393\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncan: af_can: fix NULL pointer dereference in can_rx_register()\\n\\nIt causes NULL pointer dereference when testing as following:\\n(a) use syscall(__NR_socket, 0x10ul, 3ul, 0) to create netlink socket.\\n(b) use syscall(__NR_sendmsg, ...) to create bond link device and vxcan\\n    link device, and bind vxcan device to bond device (can also use\\n    ifenslave command to bind vxcan device to bond device).\\n(c) use syscall(__NR_socket, 0x1dul, 3ul, 1) to create CAN socket.\\n(d) use syscall(__NR_bind, ...) to bind the bond device to CAN socket.\\n\\nThe bond device invokes the can-raw protocol registration interface to\\nreceive CAN packets. However, ml_priv is not allocated to the dev,\\ndev_rcv_lists is assigned to NULL in can_rx_register(). In this case,\\nit will occur the NULL pointer dereference issue.\\n\\nThe following is the stack information:\\nBUG: kernel NULL pointer dereference, address: 0000000000000008\\nPGD 122a4067 P4D 122a4067 PUD 1223c067 PMD 0\\nOops: 0000 [#1] PREEMPT SMP\\nRIP: 0010:can_rx_register+0x12d/0x1e0\\nCall Trace:\\n\u003cTASK\u003e\\nraw_enable_filters+0x8d/0x120\\nraw_enable_allfilters+0x3b/0x130\\nraw_bind+0x118/0x4f0\\n__sys_bind+0x163/0x1a0\\n__x64_sys_bind+0x1e/0x30\\ndo_syscall_64+0x35/0x80\\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\\n\u003c/TASK\u003e\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: can: af_can: corrige la desreferencia del puntero NULL en can_rx_register() Provoca la desreferencia del puntero NULL cuando se prueba lo siguiente: (a) use syscall(__NR_socket, 0x10ul, 3ul, 0) para crear el socket netlink. (b) use syscall(__NR_sendmsg, ...) para crear el dispositivo de enlace de enlace y el dispositivo de enlace vxcan, y enlace el dispositivo vxcan al dispositivo de enlace (tambi\u00e9n puede usar el comando ifenslave para enlazar el dispositivo vxcan al dispositivo de enlace). (c) use syscall(__NR_socket, 0x1dul, 3ul, 1) para crear el socket CAN. (d) use syscall(__NR_bind, ...) para enlazar el dispositivo de enlace al socket CAN. El dispositivo de enlace invoca la interfaz de registro del protocolo can-raw para recibir paquetes CAN. Sin embargo, ml_priv no est\u00e1 asignado a dev, y dev_rcv_lists est\u00e1 asignado a NULL en can_rx_register(). En este caso, se producir\u00e1 el problema de desreferencia del puntero NULL. La siguiente es la informaci\u00f3n de la pila: ERROR: desreferencia de puntero NULL del n\u00facleo, direcci\u00f3n: 0000000000000008 PGD 122a4067 P4D 122a4067 PUD 1223c067 PMD 0 Oops: 0000 [#1] PREEMPT SMP RIP: 0010:can_rx_register+0x12d/0x1e0 Seguimiento de llamadas:  raw_enable_filters+0x8d/0x120 raw_enable_allfilters+0x3b/0x130 raw_bind+0x118/0x4f0 __sys_bind+0x163/0x1a0 __x64_sys_bind+0x1e/0x30 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x63/0xcd  \"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/can/af_can.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4ac1feff6ea6495cbfd336f4438a6c6d140544a6\",\"lessThan\":\"afab4655750fcb3fca359bc7d7214e3d634cdf9c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1a5751d58b14195f763b8c1d9ef33fb8a93e95e7\",\"lessThan\":\"d68fa77ee3d03bad6fe84e89759ddf7005f9e9c6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4e096a18867a5a989b510f6999d9c6b6622e8f7b\",\"lessThan\":\"261178a1c2623077d62e374a75c195e6c99a6f05\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4e096a18867a5a989b510f6999d9c6b6622e8f7b\",\"lessThan\":\"a8055677b054bc2bb78beb1080fdc2dc5158c2fe\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4e096a18867a5a989b510f6999d9c6b6622e8f7b\",\"lessThan\":\"8aa59e355949442c408408c2d836e561794c40a1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"96340078d50a54f6a1252c62596bc44321c8bff9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5.4.110\",\"lessThan\":\"5.4.225\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.10.28\",\"lessThan\":\"5.10.155\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.11.12\",\"lessThan\":\"5.12\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/can/af_can.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.12\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.12\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.225\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.155\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.79\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.0.9\",\"lessThanOrEqual\":\"6.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-10-01T16:11:25.503445Z\",\"id\":\"CVE-2022-49863\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.4.110\",\"versionEndExcluding\":\"5.4.225\",\"matchCriteriaId\":\"E1A52173-A8BD-49E9-BEB7-8D25B75EFE1A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.10.28\",\"versionEndExcluding\":\"5.10.155\",\"matchCriteriaId\":\"3D49A70C-7ED1-4708-8946-17E22BF9D515\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11.12\",\"versionEndExcluding\":\"5.15.79\",\"matchCriteriaId\":\"6658878A-B87A-4728-80EB-30A1E6DE8B99\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.0.9\",\"matchCriteriaId\":\"C3F26709-7D49-4AF0-8145-46CCF4E8E2AD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"22BEDD49-2C6D-402D-9DBF-6646F6ECD10B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"DF73CB2A-DFFD-46FB-9BFE-AA394F27EA37\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"52048DDA-FC5A-4363-95A0-A6357B4D7F8C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"A06B2CCF-3F43-4FA9-8773-C83C3F5764B2\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/261178a1c2623077d62e374a75c195e6c99a6f05\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8aa59e355949442c408408c2d836e561794c40a1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a8055677b054bc2bb78beb1080fdc2dc5158c2fe\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/afab4655750fcb3fca359bc7d7214e3d634cdf9c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d68fa77ee3d03bad6fe84e89759ddf7005f9e9c6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T21:28:58+00:00",
      "cve": "CVE-2022-49863",
      "id": "CVE-2022-49863",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "198",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: can: af_can: fix NULL pointer dereference in can_rx_register()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49863.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-06T23:47:44Z",
      "cve": "CVE-2022-49863",
      "id": "CVE-2022-49863",
      "initial_release_date": "2025-05-04T02:12:38Z",
      "product_status:known_affected": "339",
      "product_status:known_not_affected": "395",
      "product_status:recommended": "214",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49863",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49863.json",
      "version": "42"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-49863\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T16:11:25.503445Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-476\", \"description\": \"CWE-476 NULL Pointer Dereference\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T14:35:10.719Z\"}}], \"cna\": {\"title\": \"can: af_can: fix NULL pointer dereference in can_rx_register()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4ac1feff6ea6495cbfd336f4438a6c6d140544a6\", \"lessThan\": \"afab4655750fcb3fca359bc7d7214e3d634cdf9c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1a5751d58b14195f763b8c1d9ef33fb8a93e95e7\", \"lessThan\": \"d68fa77ee3d03bad6fe84e89759ddf7005f9e9c6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4e096a18867a5a989b510f6999d9c6b6622e8f7b\", \"lessThan\": \"261178a1c2623077d62e374a75c195e6c99a6f05\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4e096a18867a5a989b510f6999d9c6b6622e8f7b\", \"lessThan\": \"a8055677b054bc2bb78beb1080fdc2dc5158c2fe\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4e096a18867a5a989b510f6999d9c6b6622e8f7b\", \"lessThan\": \"8aa59e355949442c408408c2d836e561794c40a1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"96340078d50a54f6a1252c62596bc44321c8bff9\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5.4.110\", \"lessThan\": \"5.4.225\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"5.10.28\", \"lessThan\": \"5.10.155\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"5.11.12\", \"lessThan\": \"5.12\", \"versionType\": \"semver\"}], \"programFiles\": [\"net/can/af_can.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.12\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.12\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.225\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.155\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.79\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.0.9\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.0.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/can/af_can.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/afab4655750fcb3fca359bc7d7214e3d634cdf9c\"}, {\"url\": \"https://git.kernel.org/stable/c/d68fa77ee3d03bad6fe84e89759ddf7005f9e9c6\"}, {\"url\": \"https://git.kernel.org/stable/c/261178a1c2623077d62e374a75c195e6c99a6f05\"}, {\"url\": \"https://git.kernel.org/stable/c/a8055677b054bc2bb78beb1080fdc2dc5158c2fe\"}, {\"url\": \"https://git.kernel.org/stable/c/8aa59e355949442c408408c2d836e561794c40a1\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncan: af_can: fix NULL pointer dereference in can_rx_register()\\n\\nIt causes NULL pointer dereference when testing as following:\\n(a) use syscall(__NR_socket, 0x10ul, 3ul, 0) to create netlink socket.\\n(b) use syscall(__NR_sendmsg, ...) to create bond link device and vxcan\\n    link device, and bind vxcan device to bond device (can also use\\n    ifenslave command to bind vxcan device to bond device).\\n(c) use syscall(__NR_socket, 0x1dul, 3ul, 1) to create CAN socket.\\n(d) use syscall(__NR_bind, ...) to bind the bond device to CAN socket.\\n\\nThe bond device invokes the can-raw protocol registration interface to\\nreceive CAN packets. However, ml_priv is not allocated to the dev,\\ndev_rcv_lists is assigned to NULL in can_rx_register(). In this case,\\nit will occur the NULL pointer dereference issue.\\n\\nThe following is the stack information:\\nBUG: kernel NULL pointer dereference, address: 0000000000000008\\nPGD 122a4067 P4D 122a4067 PUD 1223c067 PMD 0\\nOops: 0000 [#1] PREEMPT SMP\\nRIP: 0010:can_rx_register+0x12d/0x1e0\\nCall Trace:\\n\u003cTASK\u003e\\nraw_enable_filters+0x8d/0x120\\nraw_enable_allfilters+0x3b/0x130\\nraw_bind+0x118/0x4f0\\n__sys_bind+0x163/0x1a0\\n__x64_sys_bind+0x1e/0x30\\ndo_syscall_64+0x35/0x80\\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\\n\u003c/TASK\u003e\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.225\", \"versionStartIncluding\": \"5.4.110\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.155\", \"versionStartIncluding\": \"5.10.28\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.79\", \"versionStartIncluding\": \"5.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.0.9\", \"versionStartIncluding\": \"5.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1\", \"versionStartIncluding\": \"5.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.11.12\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-23T15:23:04.788Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49863\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-23T15:23:04.788Z\", \"dateReserved\": \"2025-05-01T14:05:17.236Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-05-01T14:10:16.403Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.