{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-31532", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.112Z", "datePublished": "2026-04-23T11:12:44.829Z", "dateUpdated": "2026-04-23T11:12:44.829Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-04-23T11:12:44.829Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: raw: fix ro->uniq use-after-free in raw_rcv()\n\nraw_release() unregisters raw CAN receive filters via can_rx_unregister(),\nbut receiver deletion is deferred with call_rcu(). This leaves a window\nwhere raw_rcv() may still be running in an RCU read-side critical section\nafter raw_release() frees ro->uniq, leading to a use-after-free of the\npercpu uniq storage.\n\nMove free_percpu(ro->uniq) out of raw_release() and into a raw-specific\nsocket destructor. can_rx_unregister() takes an extra reference to the\nsocket and only drops it from the RCU callback, so freeing uniq from\nsk_destruct ensures the percpu area is not released until the relevant\ncallbacks have drained.\n\n[mkl: applied manually]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/can/raw.c"], "versions": [{"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "572f0bf536ebc14f6e7da3d21a85cf076de8358e", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "1a0f2de81f7fbdc538fc72d7d74609b79bc83cc0", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "7201a531b9a5ed892bfda5ded9194ef622de8ffa", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "34c1741254ff972e8375faf176678a248826fe3a", "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/can/raw.c"], "versions": [{"version": "6.12.83", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.24", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.14", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.1", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.12.83"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.18.24"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.19.14"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "7.0.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/572f0bf536ebc14f6e7da3d21a85cf076de8358e"}, {"url": "https://git.kernel.org/stable/c/1a0f2de81f7fbdc538fc72d7d74609b79bc83cc0"}, {"url": "https://git.kernel.org/stable/c/7201a531b9a5ed892bfda5ded9194ef622de8ffa"}, {"url": "https://git.kernel.org/stable/c/34c1741254ff972e8375faf176678a248826fe3a"}], "title": "can: raw: fix ro->uniq use-after-free in raw_rcv()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: raw: fix ro->uniq use-after-free in raw_rcv()\n\nraw_release() unregisters raw CAN receive filters via can_rx_unregister(),\nbut receiver deletion is deferred with call_rcu(). This leaves a window\nwhere raw_rcv() may still be running in an RCU read-side critical section\nafter raw_release() frees ro->uniq, leading to a use-after-free of the\npercpu uniq storage.\n\nMove free_percpu(ro->uniq) out of raw_release() and into a raw-specific\nsocket destructor. can_rx_unregister() takes an extra reference to the\nsocket and only drops it from the RCU callback, so freeing uniq from\nsk_destruct ensures the percpu area is not released until the relevant\ncallbacks have drained.\n\n[mkl: applied manually]"}], "id": "CVE-2026-31532", "lastModified": "2026-04-23T12:17:01.927", "metrics": {}, "published": "2026-04-23T12:17:01.927", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1a0f2de81f7fbdc538fc72d7d74609b79bc83cc0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/34c1741254ff972e8375faf176678a248826fe3a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/572f0bf536ebc14f6e7da3d21a85cf076de8358e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7201a531b9a5ed892bfda5ded9194ef622de8ffa"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}