269 lines
13 KiB
JSON
269 lines
13 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-2026-80856",
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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": "2026-08-26T14:34:25.797Z",
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"datePublished": "2026-09-04T15:55:09.250Z",
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"dateUpdated": "2026-10-30T12:31:18.058Z"
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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": "2026-10-30T12:31:18.058Z"
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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\nfuse: fix invalidate lock leak on setattr writeback failure\n\nfuse_do_setattr() takes filemap_invalidate_lock() for a DAX truncate\n(fault_blocked = true) and releases it at the out:/error: labels. But\nwhen a writeback flush is also needed, a write_inode_now() failure\nreturns directly and leaks the lock, so any later fault or truncate on\nthe file stalls on the stale rwsem.\n\nFor example, truncate(2) on a setuid file reaches fuse_do_setattr()\nwith both ATTR_SIZE and ATTR_MODE set:\n\n truncate(2)\n └─ do_truncate()\n ├─ dentry_needs_remove_privs() # S_ISUID\n └─ notify_change() # KILL_SUID -> ATTR_MODE\n └─ fuse_setattr() # no killpriv:\n │ # ia_valid |= ATTR_MODE\n └─ fuse_do_setattr()\n ├─ filemap_invalidate_lock() # IS_DAX && is_truncate\n └─ write_inode_now() # is_wb && ATTR_MODE\n └─ if (err) # e.g. daemon -> -EIO\n return err # <- lock leaked\n\nFix this by adding an unlock label that releases the lock before\nreturning the error, and use it for the fuse_dax_break_layouts()\nfailure path as well."
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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/fuse/dir.c"
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],
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"versions": [
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{
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"version": "6ae330cad6ef22ab8347ea9e0707dc56a7c7363f",
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"lessThan": "92faaee1b108c6e4b07730d20896a6593a85f675",
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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": "6ae330cad6ef22ab8347ea9e0707dc56a7c7363f",
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"lessThan": "8f14906ce9103ab8f2f1ebda45935a0d61b9d763",
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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": "6ae330cad6ef22ab8347ea9e0707dc56a7c7363f",
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"lessThan": "03cfeeb135428fa83f0791d3f8f94d9298cae695",
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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": "6ae330cad6ef22ab8347ea9e0707dc56a7c7363f",
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"lessThan": "92588d187ba4697a322e7aefe5d9e538a87d1cd2",
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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": "6ae330cad6ef22ab8347ea9e0707dc56a7c7363f",
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"lessThan": "ea9fea370b8de4ffd72e0ef89550415c15637787",
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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": "6ae330cad6ef22ab8347ea9e0707dc56a7c7363f",
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"lessThan": "1758730d9eaa3c06cf415c3446d9f6eed9ed3eed",
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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": "6ae330cad6ef22ab8347ea9e0707dc56a7c7363f",
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"lessThan": "dd278d954c0e96a9cbd3cc491e07b8267d25f8d5",
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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": "6ae330cad6ef22ab8347ea9e0707dc56a7c7363f",
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"lessThan": "e8457ebfd77a46e8d1210e8888ea914ad064558e",
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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": "6ae330cad6ef22ab8347ea9e0707dc56a7c7363f",
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"lessThan": "9afeca0d569c9fc89d758fe7a9339d1e8afb1546",
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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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"fs/fuse/dir.c"
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],
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"versions": [
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{
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"version": "5.10",
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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": "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": "5.10.273",
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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": "5.15.220",
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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": "6.1.187",
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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": "6.6.156",
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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": "6.12.108",
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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": "6.18.49",
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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": "7.1.13",
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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": "7.2.3",
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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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"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": "5.10",
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"versionEndExcluding": "5.10.273"
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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": "5.10",
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"versionEndExcluding": "5.15.220"
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"versionEndExcluding": "6.1.187"
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"versionStartIncluding": "5.10",
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"versionEndExcluding": "6.6.156"
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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/92faaee1b108c6e4b07730d20896a6593a85f675"
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},
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{
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"url": "https://git.kernel.org/stable/c/8f14906ce9103ab8f2f1ebda45935a0d61b9d763"
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},
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{
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"url": "https://git.kernel.org/stable/c/03cfeeb135428fa83f0791d3f8f94d9298cae695"
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},
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{
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"url": "https://git.kernel.org/stable/c/92588d187ba4697a322e7aefe5d9e538a87d1cd2"
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},
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{
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"url": "https://git.kernel.org/stable/c/ea9fea370b8de4ffd72e0ef89550415c15637787"
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},
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{
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"url": "https://git.kernel.org/stable/c/1758730d9eaa3c06cf415c3446d9f6eed9ed3eed"
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},
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{
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"url": "https://git.kernel.org/stable/c/dd278d954c0e96a9cbd3cc491e07b8267d25f8d5"
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},
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{
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"url": "https://git.kernel.org/stable/c/e8457ebfd77a46e8d1210e8888ea914ad064558e"
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},
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{
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"url": "https://git.kernel.org/stable/c/9afeca0d569c9fc89d758fe7a9339d1e8afb1546"
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}
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],
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"title": "fuse: fix invalidate lock leak on setattr writeback failure",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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} |