{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-80855", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.797Z", "datePublished": "2026-09-04T15:55:07.864Z", "dateUpdated": "2026-10-19T08:44:49.307Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:44:49.307Z" }, "descriptions": [ { "lang": "en", "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." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/fuse/file.c" ], "versions": [ { "version": "d58366aab86854217b81679d1a9dcd54a2edfc2a", "lessThan": "1b04d80a27d317064cce2307472f5bef9975bc50", "status": "affected", "versionType": "git" }, { "version": "2fdbb8dd01556e1501132b5ad3826e8f71e24a8b", "lessThan": "a61524da59a2f5ac9c8de23ff98b30da769ab144", "status": "affected", "versionType": "git" }, { "version": "2fdbb8dd01556e1501132b5ad3826e8f71e24a8b", "lessThan": "dcf30a56624c2a0cfab1bada5b1ca8cc0c02f010", "status": "affected", "versionType": "git" }, { "version": "2fdbb8dd01556e1501132b5ad3826e8f71e24a8b", "lessThan": "7288c279ddbd654a06c82118c1a3f5570c1807f0", "status": "affected", "versionType": "git" }, { "version": "2fdbb8dd01556e1501132b5ad3826e8f71e24a8b", "lessThan": "776e85fda752f9a15e0f82dec42ecacd12a9bd94", "status": "affected", "versionType": "git" }, { "version": "2fdbb8dd01556e1501132b5ad3826e8f71e24a8b", "lessThan": "1d3e701cda2f41d48aa721b3ebefbe0fbf8d74da", "status": "affected", "versionType": "git" }, { "version": "2fdbb8dd01556e1501132b5ad3826e8f71e24a8b", "lessThan": "e981474d7bf1457da12404e169ea147d2c8ecea7", "status": "affected", "versionType": "git" }, { "version": "2fdbb8dd01556e1501132b5ad3826e8f71e24a8b", "lessThan": "a927f1867e61b78f39f9da0bbba3c98c2ca151fe", "status": "affected", "versionType": "git" }, { "version": "81775ab858b4236c52c5da7e25cec6e49dd91b46", "status": "affected", "versionType": "git" }, { "version": "b57e150ac2eac791d5d187923b73dc2dafaf67fa", "status": "affected", "versionType": "git" }, { "version": "1fdbbe246daf348adaa0739463384b16ceba1fc0", "status": "affected", "versionType": "git" }, { "version": "5.15.109", "lessThan": "5.15.220", "status": "affected", "versionType": "semver" }, { "version": "5.10.179", "lessThan": "5.11", "status": "affected", "versionType": "semver" }, { "version": "5.18.18", "lessThan": "5.19", "status": "affected", "versionType": "semver" }, { "version": "5.19.2", "lessThan": "5.20", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/fuse/file.c" ], "versions": [ { "version": "6.0", "status": "affected" }, { "version": "0", "lessThan": "6.0", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.220", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.187", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.156", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.108", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.49", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1.13", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2.3", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.3", "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": "5.15.109", "versionEndExcluding": "5.15.220" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.1.187" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.6.156" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.12.108" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.18.49" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "7.1.13" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "7.2.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "7.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.179" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18.18" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/1b04d80a27d317064cce2307472f5bef9975bc50" }, { "url": "https://git.kernel.org/stable/c/a61524da59a2f5ac9c8de23ff98b30da769ab144" }, { "url": "https://git.kernel.org/stable/c/dcf30a56624c2a0cfab1bada5b1ca8cc0c02f010" }, { "url": "https://git.kernel.org/stable/c/7288c279ddbd654a06c82118c1a3f5570c1807f0" }, { "url": "https://git.kernel.org/stable/c/776e85fda752f9a15e0f82dec42ecacd12a9bd94" }, { "url": "https://git.kernel.org/stable/c/1d3e701cda2f41d48aa721b3ebefbe0fbf8d74da" }, { "url": "https://git.kernel.org/stable/c/e981474d7bf1457da12404e169ea147d2c8ecea7" }, { "url": "https://git.kernel.org/stable/c/a927f1867e61b78f39f9da0bbba3c98c2ca151fe" } ], "title": "fuse: fix invalidate lock leak on open O_TRUNC DAX failure", "x_generator": { "engine": "bippy-1.2.0" } } } }