242 lines
13 KiB
JSON
242 lines
13 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2022-49065",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2025-02-26T01:49:39.244Z",
|
|
"datePublished": "2025-02-26T01:54:33.881Z",
|
|
"dateUpdated": "2026-08-05T08:53:42.252Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-08-05T08:53:42.252Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nSUNRPC: Fix the svc_deferred_event trace class\n\nFix a NULL deref crash that occurs when an svc_rqst is deferred\nwhile the sunrpc tracing subsystem is enabled. svc_revisit() sets\ndr->xprt to NULL, so it can't be relied upon in the tracepoint to\nprovide the remote's address.\n\nUnfortunately we can't revert the \"svc_deferred_class\" hunk in\ncommit ece200ddd54b (\"sunrpc: Save remote presentation address in\nsvc_xprt for trace events\") because there is now a specific check\nof event format specifiers for unsafe dereferences. The warning\nthat check emits is:\n\n event svc_defer_recv has unsafe dereference of argument 1\n\nA \"%pISpc\" format specifier with a \"struct sockaddr *\" is indeed\nflagged by this check.\n\nInstead, take the brute-force approach used by the svcrdma_qp_error\ntracepoint. Convert the dr::addr field into a presentation address\nin the TP_fast_assign() arm of the trace event, and store that as\na string. This fix can be backported to -stable kernels.\n\nIn the meantime, commit c6ced22997ad (\"tracing: Update print fmt\ncheck to handle new __get_sockaddr() macro\") is now in v5.18, so\nthis wonky fix can be replaced with __sockaddr() and friends\nproperly during the v5.19 merge window."
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV3_1": {
|
|
"version": "3.1",
|
|
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
|
|
"baseScore": 7.5,
|
|
"baseSeverity": "HIGH"
|
|
},
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "AV:N - The bug is in the SUNRPC server deferred-request path used by nfsd and lockd; a remote NFS/NLM peer drives svc_defer → svc_revisit/svc_deferred_recv over TCP/UDP without local access.\nAC:L - With the sunrpc svc_defer_* trace events enabled (a realistic NFS debugging/observability deployment), a remote peer can deterministically force request deferral via auth/export/idmap cache misses and hit the NULL deref with no race or layout dependency.\nPR:N - Deferral runs during svcauth_unix_set_client (AUTH_NULL/AUTH_UNIX) and related cache_check paths before meaningful credentials are established, so an unauthenticated network peer reaching nfsd/lockd is sufficient.\nUI:N - The attacker triggers the path solely by sending RPC traffic that causes a cache deferral/revisit; no victim user action is required.\nS:U - The resulting kernel oops stays within the NFS server host kernel under the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:N - This is a pure NULL dereference of dr->xprt in the tracepoint TP_fast_assign path with no out-of-bounds read, UAF, or other disclosure primitive.\nI:N - The fault is a NULL pointer read of xpt_remotebuf with no memory corruption, write primitive, or control-flow hijack beyond the ensuing oops.\nA:H - Dereferencing NULL dr->xprt in the enabled svc_defer_queue/svc_defer_recv tracepoint causes a kernel oops/panic in the nfsd/lockd service path, fully denying availability."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"include/trace/events/sunrpc.h"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "ece200ddd54b9ce840cfee554fb812560c545c7d",
|
|
"lessThan": "85ee17ca21cf92989e8c923e3ea4514c291e9d38",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "ece200ddd54b9ce840cfee554fb812560c545c7d",
|
|
"lessThan": "726ae7300fcc25fefa46d188cc07eb16dc908f9e",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "ece200ddd54b9ce840cfee554fb812560c545c7d",
|
|
"lessThan": "c2456f470eea3bd06574d988bf6089e7c3f4c5cc",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "ece200ddd54b9ce840cfee554fb812560c545c7d",
|
|
"lessThan": "4d5004451ab2218eab94a30e1841462c9316ba19",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "affected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"include/trace/events/sunrpc.h"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "4.17",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "4.17",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.10.112",
|
|
"lessThanOrEqual": "5.10.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.15.35",
|
|
"lessThanOrEqual": "5.15.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.17.4",
|
|
"lessThanOrEqual": "5.17.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.18",
|
|
"lessThanOrEqual": "*",
|
|
"status": "unaffected",
|
|
"versionType": "original_commit_for_fix"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"cpeApplicability": [
|
|
{
|
|
"nodes": [
|
|
{
|
|
"operator": "OR",
|
|
"negate": false,
|
|
"cpeMatch": [
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.17",
|
|
"versionEndExcluding": "5.10.112"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.17",
|
|
"versionEndExcluding": "5.15.35"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.17",
|
|
"versionEndExcluding": "5.17.4"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "4.17",
|
|
"versionEndExcluding": "5.18"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/85ee17ca21cf92989e8c923e3ea4514c291e9d38"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/726ae7300fcc25fefa46d188cc07eb16dc908f9e"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/c2456f470eea3bd06574d988bf6089e7c3f4c5cc"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/4d5004451ab2218eab94a30e1841462c9316ba19"
|
|
}
|
|
],
|
|
"title": "SUNRPC: Fix the svc_deferred_event trace class",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"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-2022-49065",
|
|
"role": "CISA Coordinator",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "partial"
|
|
}
|
|
],
|
|
"version": "2.0.3",
|
|
"timestamp": "2025-10-01T19:49:41.900091Z"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"problemTypes": [
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"type": "CWE",
|
|
"cweId": "CWE-476",
|
|
"description": "CWE-476 NULL Pointer Dereference"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2025-10-01T19:57:06.151Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |