279 lines
14 KiB
JSON
279 lines
14 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2024-38570",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2024-06-18T19:36:34.923Z",
|
|
"datePublished": "2024-06-19T13:35:36.274Z",
|
|
"dateUpdated": "2026-10-30T12:18:30.366Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-10-30T12:18:30.366Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngfs2: Fix potential glock use-after-free on unmount\n\nWhen a DLM lockspace is released and there ares still locks in that\nlockspace, DLM will unlock those locks automatically. Commit\nfb6791d100d1b started exploiting this behavior to speed up filesystem\nunmount: gfs2 would simply free glocks it didn't want to unlock and then\nrelease the lockspace. This didn't take the bast callbacks for\nasynchronous lock contention notifications into account, which remain\nactive until until a lock is unlocked or its lockspace is released.\n\nTo prevent those callbacks from accessing deallocated objects, put the\nglocks that should not be unlocked on the sd_dead_glocks list, release\nthe lockspace, and only then free those glocks.\n\nAs an additional measure, ignore unexpected ast and bast callbacks if\nthe receiving glock is dead."
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV3_1": {
|
|
"version": "3.1",
|
|
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
|
|
"baseScore": 9.8,
|
|
"baseSeverity": "CRITICAL"
|
|
},
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "AV:N - The use-after-free is driven by a DLM protocol message from a remote cluster node (`receive_bast`/`receive_request` over the DLM TCP/SCTP interconnect), which dispatches `gdlm_bast()` on the already-freed glock. The DLM interconnect is routable IP, not restricted to a single L2 segment.\nAC:L - The attacker fully controls the contention side and can hold conflicting locks on many resources continuously so that a bast is guaranteed to land in the unmount window, which is wide (it spans `truncate_inode_pages_final()` and `gfs2_delete_debugfs_file()`); unmounts of clustered GFS2 volumes are routine and repeatable events in pacemaker-managed clusters, so the race is reliably winnable.\nPR:N - No credentials or privileges on the victim node are needed — the DLM peer's lock request is not authenticated per-user by the target, and an ordinary unprivileged user on any cluster node generates the required contention with plain file access on the shared filesystem.\nUI:N - No victim action is solicited by the attacker; the unmount is a routine cluster/administrative operation and the callback fires automatically from the DLM workqueue.\nS:U - The freed object and the corrupted state are both kernel memory in the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - A use-after-free on a `gfs2_glock` slab object allows the freed allocation to be reclaimed by attacker-influenced data and then read/leaked through glock state and the subsequent `dump_glock_func` path, giving arbitrary kernel-memory disclosure potential.\nI:H - `gfs2_glock_cb()` writes into the freed object (lockref count, `gl_flags`, `gl_demote_state`) and then queues `&gl->gl_work`, so a reallocated object supplies the `delayed_work` timer/work function pointer — a control-flow hijack and arbitrary-write primitive.\nA:H - Even unexploited, the UAF corrupts a spinlock and refcount in freed memory and reaches `BUG_ON`/`BUG()` in `gdlm_ast()`, causing kernel oops or panic on the unmounting node."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"fs/gfs2/glock.c",
|
|
"fs/gfs2/glock.h",
|
|
"fs/gfs2/incore.h",
|
|
"fs/gfs2/lock_dlm.c",
|
|
"fs/gfs2/ops_fstype.c",
|
|
"fs/gfs2/super.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "fb6791d100d1bba20b5cdbc4912e1f7086ec60f8",
|
|
"lessThan": "94b32a85d1a76ae4f1b42a88677fa20b20187729",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "fb6791d100d1bba20b5cdbc4912e1f7086ec60f8",
|
|
"lessThan": "0636b34b44589b142700ac137b5f69802cfe2e37",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "fb6791d100d1bba20b5cdbc4912e1f7086ec60f8",
|
|
"lessThan": "e42e8a24d7f02d28763d16ca7ec5fc6d1f142af0",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "fb6791d100d1bba20b5cdbc4912e1f7086ec60f8",
|
|
"lessThan": "501cd8fabf621d10bd4893e37f6ce6c20523c8ca",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "fb6791d100d1bba20b5cdbc4912e1f7086ec60f8",
|
|
"lessThan": "d98779e687726d8f8860f1c54b5687eec5f63a73",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "affected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"fs/gfs2/glock.c",
|
|
"fs/gfs2/glock.h",
|
|
"fs/gfs2/incore.h",
|
|
"fs/gfs2/lock_dlm.c",
|
|
"fs/gfs2/ops_fstype.c",
|
|
"fs/gfs2/super.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "3.8",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "3.8",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.1.191",
|
|
"lessThanOrEqual": "6.1.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.6.33",
|
|
"lessThanOrEqual": "6.6.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.8.12",
|
|
"lessThanOrEqual": "6.8.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.9.3",
|
|
"lessThanOrEqual": "6.9.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.10",
|
|
"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": "3.8",
|
|
"versionEndExcluding": "6.1.191"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.8",
|
|
"versionEndExcluding": "6.6.33"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.8",
|
|
"versionEndExcluding": "6.8.12"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.8",
|
|
"versionEndExcluding": "6.9.3"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.8",
|
|
"versionEndExcluding": "6.10"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/94b32a85d1a76ae4f1b42a88677fa20b20187729"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/0636b34b44589b142700ac137b5f69802cfe2e37"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/e42e8a24d7f02d28763d16ca7ec5fc6d1f142af0"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/501cd8fabf621d10bd4893e37f6ce6c20523c8ca"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/d98779e687726d8f8860f1c54b5687eec5f63a73"
|
|
}
|
|
],
|
|
"title": "gfs2: Fix potential glock use-after-free on unmount",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"providerMetadata": {
|
|
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
|
|
"shortName": "CVE",
|
|
"dateUpdated": "2024-08-02T04:12:25.837Z"
|
|
},
|
|
"title": "CVE Program Container",
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/0636b34b44589b142700ac137b5f69802cfe2e37",
|
|
"tags": [
|
|
"x_transferred"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/e42e8a24d7f02d28763d16ca7ec5fc6d1f142af0",
|
|
"tags": [
|
|
"x_transferred"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/501cd8fabf621d10bd4893e37f6ce6c20523c8ca",
|
|
"tags": [
|
|
"x_transferred"
|
|
]
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/d98779e687726d8f8860f1c54b5687eec5f63a73",
|
|
"tags": [
|
|
"x_transferred"
|
|
]
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"id": "CVE-2024-38570",
|
|
"role": "CISA Coordinator",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "partial"
|
|
}
|
|
],
|
|
"version": "2.0.3",
|
|
"timestamp": "2024-09-10T17:14:22.126008Z"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2024-09-11T17:34:56.284Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |