255 lines
12 KiB
JSON
255 lines
12 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-2026-97556",
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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": "2026-09-24T16:01:01.154Z",
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"datePublished": "2026-09-25T10:21:47.078Z",
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"dateUpdated": "2026-10-30T12:37:21.053Z"
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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": "2026-10-30T12:37:21.053Z"
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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\nsmb: client: avoid leaking refcount when cifs_sb_tlink() fails\n\ncifs_oplock_break() takes over the reference that\ncifs_queue_oplock_break() acquired when it queued the work, and drops it\nwith _cifsFileInfo_put() once the break has been processed.\n\nOnly in setups with \"-o multiuser\", cifs_sb_tlink() may fail, at which\npoint cifs_oplock_break() returns without putting the file reference,\nmirroring the reference leak we already fixed in the companion patch to\ncifs_queue_oplock_break().\n\nThis would trigger a crash due to busy inodes on the next unmount:\n\n BUG: Dentry ... still in use (1) [unmount of cifs cifs]\n VFS: Busy inodes after unmount of cifs (cifs)\n\nDrop the reference on that path as well. Doing so before the out label\nmirrors the normal path, which also puts the reference before\ncifs_done_oplock_break().\n\nFound by Sashiko code review. The failure path was not exercised at\nruntime."
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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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"fs/smb/client/file.c"
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],
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"versions": [
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{
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"version": "b99f490ea87ebcca3a429fd8837067feb56a4c7c",
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"lessThan": "f1fd8a84181b3af03c508e0b02b4877945dd070a",
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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": "5ee28bcfbaacf289eb25c662a2862542ea6ce6a7",
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"lessThan": "55c5f095d4df14271b238f826e1392fda7b6e60e",
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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": "e8f5f849ffce24490eb9449e98312b66c0dba76f",
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"lessThan": "e9c5bcc88b8337157e480c85a6d2f326bc265012",
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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": "e8f5f849ffce24490eb9449e98312b66c0dba76f",
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"lessThan": "9ec991e148368e3207e98134c509a625097f7693",
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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": "e8f5f849ffce24490eb9449e98312b66c0dba76f",
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"lessThan": "dd03fd658ea59821505e0e643b6b7cbdf51c4e1d",
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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": "e8f5f849ffce24490eb9449e98312b66c0dba76f",
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"lessThan": "1d1b0f1d812a4011a57bc6c70492c34a2e46c6dd",
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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": "e8f5f849ffce24490eb9449e98312b66c0dba76f",
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"lessThan": "23b26f4408ac3f35a482d2e5cf6fc865d4201b71",
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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": "6b67a6d2e50634fe127e656147c81915955e9f5e",
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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": "5.15.128",
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"lessThan": "5.15.224",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.1.47",
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"lessThan": "6.1.189",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.4.12",
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"lessThan": "6.5",
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"status": "affected",
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"versionType": "semver"
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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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"fs/smb/client/file.c"
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],
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"versions": [
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{
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"version": "6.5",
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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": "6.5",
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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": "5.15.224",
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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": "6.1.189",
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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": "6.6.158",
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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": "6.12.111",
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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": "6.18.53",
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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": "7.2.7",
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"lessThanOrEqual": "7.2.*",
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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": "7.3",
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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": "5.15.128",
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"versionEndExcluding": "5.15.224"
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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": "6.1.47",
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"versionEndExcluding": "6.1.189"
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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": "6.5",
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"versionEndExcluding": "6.6.158"
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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": "6.5",
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"versionEndExcluding": "6.12.111"
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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": "6.5",
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"versionEndExcluding": "6.18.53"
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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": "6.5",
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"versionEndExcluding": "7.2.7"
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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": "6.5",
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"versionEndExcluding": "7.3"
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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": "6.4.12"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/f1fd8a84181b3af03c508e0b02b4877945dd070a"
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},
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{
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"url": "https://git.kernel.org/stable/c/55c5f095d4df14271b238f826e1392fda7b6e60e"
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},
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{
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"url": "https://git.kernel.org/stable/c/e9c5bcc88b8337157e480c85a6d2f326bc265012"
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},
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{
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"url": "https://git.kernel.org/stable/c/9ec991e148368e3207e98134c509a625097f7693"
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},
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{
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"url": "https://git.kernel.org/stable/c/dd03fd658ea59821505e0e643b6b7cbdf51c4e1d"
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},
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{
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"url": "https://git.kernel.org/stable/c/1d1b0f1d812a4011a57bc6c70492c34a2e46c6dd"
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},
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{
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"url": "https://git.kernel.org/stable/c/23b26f4408ac3f35a482d2e5cf6fc865d4201b71"
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}
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],
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"title": "smb: client: avoid leaking refcount when cifs_sb_tlink() fails",
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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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}
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} |