310 lines
16 KiB
JSON
310 lines
16 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-68153",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-07-30T09:28:09.371Z",
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"datePublished": "2026-08-10T11:59:19.302Z",
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"dateUpdated": "2026-10-19T20:58:54.326Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-19T16:30:18.048Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: remove debugfs files before client teardown\n\nceph_destroy_client() tears down the monitor client before removing\nthe per-client debugfs files. A concurrent read of the monmap debugfs\nfile can enter monmap_show() after ceph_monc_stop() has freed\nmonc->monmap, triggering a use-after-free.\n\nRemove the debugfs files before stopping the OSD and monitor clients.\ndebugfs_remove() drains active handlers and prevents new accesses, so\nthe debugfs callbacks can no longer race the rest of client teardown."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - Exploitation requires local access to debugfs via read() on /sys/kernel/debug/ceph/client*/monmap concurrent with local ceph client teardown via umount or rbd unmap; the bug is not reachable through Ceph network protocol handlers.\nAC:L - The attacker controls both sides of the race by concurrently reading the monmap debugfs file while triggering ceph_destroy_client() via umount/rbd teardown, and can retry until the window between ceph_monc_stop() and debugfs removal is hit.\nPR:L - An unprivileged local user can use user-namespace capabilities (CAP_DAC_READ_SEARCH) to read root-owned debugfs files and race reads against libceph client teardown during automated volume detach or service restarts on Ceph storage nodes.\nUI:N - No victim user interaction is required; a local attacker can independently issue debugfs reads and trigger or time against client teardown without requiring another user to click, open files, or mount filesystems.\nS:U - The use-after-free corrupts kernel heap memory within the same kernel security domain and does not cross VM, container, or IOMMU boundaries; impact is standard kernel privilege escalation or crash.\nC:H - The use-after-free on monc->monmap permits reading freed heap memory containing monitor addresses and entity metadata, and UAF primitives are routinely leveraged for arbitrary kernel memory disclosure.\nI:H - Heap use-after-free on the variable-length ceph_monmap structure enables memory corruption that can be groomed into arbitrary kernel write primitives and local privilege escalation via control-flow hijacking.\nA:H - Concurrent access to freed monmap memory during debugfs iteration can cause kernel oops, BUG, or panic, and UAF corruption reliably threatens system availability even when full exploitation is not attempted."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/ceph/ceph_common.c"
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],
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"versions": [
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{
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"version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
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"lessThan": "ac78549d186090ee7125d28c3a8c376573b36194",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
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"lessThan": "463a264e9094384112a5c8b46f0a9ddaf8566904",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
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"lessThan": "fe46b7e06f14f6f94766832df309b249cb689d27",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
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"lessThan": "fc1010e7e0204ece6cc0f9af4f473e9553535eab",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
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"lessThan": "d3dc8889d39a676bf840132bd5c5c48cb0daba23",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
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"lessThan": "8f5a3abc54ba24dbceb14cc3a719908c4f688091",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
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"lessThan": "b9fedda2f628e030384228de0dafc574b7fb0c2f",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
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"lessThan": "e4c804726c4afce3ba648b982d564f6af2cfa328",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/ceph/ceph_common.c"
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],
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"versions": [
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{
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"version": "2.6.34",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "2.6.34",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.265",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.216",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.183",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.148",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.101",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.42",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1.6",
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"lessThanOrEqual": "7.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.34",
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"versionEndExcluding": "5.10.265"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.34",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.34",
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"versionEndExcluding": "7.1.6"
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/ac78549d186090ee7125d28c3a8c376573b36194"
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},
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{
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"url": "https://git.kernel.org/stable/c/463a264e9094384112a5c8b46f0a9ddaf8566904"
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},
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{
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"url": "https://git.kernel.org/stable/c/fe46b7e06f14f6f94766832df309b249cb689d27"
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},
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{
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"url": "https://git.kernel.org/stable/c/fc1010e7e0204ece6cc0f9af4f473e9553535eab"
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},
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{
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"url": "https://git.kernel.org/stable/c/d3dc8889d39a676bf840132bd5c5c48cb0daba23"
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},
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{
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"url": "https://git.kernel.org/stable/c/8f5a3abc54ba24dbceb14cc3a719908c4f688091"
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},
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{
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"url": "https://git.kernel.org/stable/c/b9fedda2f628e030384228de0dafc574b7fb0c2f"
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},
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{
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"url": "https://git.kernel.org/stable/c/e4c804726c4afce3ba648b982d564f6af2cfa328"
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}
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],
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"title": "libceph: remove debugfs files before client teardown",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-68153",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T15:44:57.260747Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-416",
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"description": "CWE-416 Use After Free"
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}
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]
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-19T20:58:54.326Z"
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}
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}
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]
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}
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} |