313 lines
15 KiB
JSON
313 lines
15 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-2026-80855",
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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": "2026-09-04T15:55:07.864Z",
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"dateUpdated": "2026-10-30T12:31:16.183Z"
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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": "2026-10-30T12:31:16.183Z"
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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 open O_TRUNC DAX failure\n\nfuse_open() takes filemap_invalidate_lock() for a DAX truncate\n(dax_truncate = true) and releases it before the out_inode_unlock\nlabel. But when fuse_dax_break_layouts() fails, the goto\nout_inode_unlock skips the unlock and leaks the rwsem, so any later\nfault or truncate on the file stalls on the stale lock.\n\nfuse_dax_break_layouts() can fail with -ERESTARTSYS when a signal\ninterrupts the wait for busy DAX pages to drain:\n\n open(\"file\", O_RDWR | O_TRUNC)\n └─ fuse_open()\n ├─ filemap_invalidate_lock() # dax_truncate\n └─ fuse_dax_break_layouts()\n └─ dax_break_layout()\n └─ wait_page_idle() # TASK_INTERRUPTIBLE\n └─ fuse_wait_dax_page() # unlock, schedule, re-lock\n └─ signal → -ERESTARTSYS\n goto out_inode_unlock # <- lock leaked\n\nFix this by moving filemap_invalidate_unlock() below the label so\nthat all error paths release the lock, and rename the label to\nout_unlock as it now covers more than just the inode lock."
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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/file.c"
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],
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{
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"status": "affected",
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},
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{
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"version": "5.10.179",
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"lessThan": "5.10.273",
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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": "5.15.109",
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"lessThan": "5.15.220",
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"status": "affected",
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},
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{
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"version": "5.18.18",
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"lessThan": "5.19",
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"status": "affected",
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},
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{
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"version": "5.19.2",
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"lessThan": "5.20",
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"status": "affected",
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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/file.c"
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],
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{
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"version": "6.0",
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"status": "affected"
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"version": "0",
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"version": "5.10.273",
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"lessThanOrEqual": "5.10.*",
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},
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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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},
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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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},
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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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},
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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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"references": [
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{
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"url": "https://git.kernel.org/stable/c/69a294e561c10909688bcb25456535dcd1818e1a"
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},
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{
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},
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{
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"url": "https://git.kernel.org/stable/c/a61524da59a2f5ac9c8de23ff98b30da769ab144"
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},
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{
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"url": "https://git.kernel.org/stable/c/dcf30a56624c2a0cfab1bada5b1ca8cc0c02f010"
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},
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{
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"url": "https://git.kernel.org/stable/c/7288c279ddbd654a06c82118c1a3f5570c1807f0"
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},
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{
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"url": "https://git.kernel.org/stable/c/776e85fda752f9a15e0f82dec42ecacd12a9bd94"
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},
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{
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"url": "https://git.kernel.org/stable/c/1d3e701cda2f41d48aa721b3ebefbe0fbf8d74da"
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},
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{
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"url": "https://git.kernel.org/stable/c/e981474d7bf1457da12404e169ea147d2c8ecea7"
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},
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{
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"url": "https://git.kernel.org/stable/c/a927f1867e61b78f39f9da0bbba3c98c2ca151fe"
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}
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],
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"title": "fuse: fix invalidate lock leak on open O_TRUNC DAX failure",
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} |