{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-80809", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.794Z", "datePublished": "2026-09-04T15:13:29.769Z", "dateUpdated": "2026-10-19T08:44:02.755Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:44:02.755Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix missing metadata reservation for large xattrs\n\n[BUG]\nlsetxattr() panics the kernel when setting a large xattr value on a\nfragmented filesystem where the file already has an external xattr\nblock.\n\n[CAUSE]\nocfs2_calc_xattr_set_need() never reserves metadata blocks for a new\nxattr value's extent tree when the file already has an external xattr\nblock. The not_found path leaves meta_add at zero, so meta_ac is NULL\nwhen ocfs2_xattr_extend_allocation() runs.\n\nA new value root has room for a single extent record. On a fragmented\nfilesystem, the allocator cannot satisfy the xattr value in one\ncontiguous run, so each non-contiguous run requires its own extent\nrecord. When the value root's extent list is full and meta_ac is NULL,\nocfs2_add_clusters_in_btree() returns RESTART_META, and\nocfs2_xattr_extend_allocation() hits BUG_ON(why == RESTART_META).\n\n[FIX]\nThe case where no xattr block exists yet already calls\nocfs2_extend_meta_needed(&def_xv.xv.xr_list) to reserve value tree\nmetadata. Add the same reservation to the case where an xattr block\nalready exists, making the two cases consistent.\n\nReplace the BUG_ON with a -ENOSPC return so that if RESTART_META is\nreturned despite the reservation, the error propagates to userspace\ninstead of panicking the kernel." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ocfs2/xattr.c" ], "versions": [ { "version": "a78f9f4668949a6588b8872f162e86685c63d023", "lessThan": "743ac908282ac97ef6e73ac3a92df2cc8ecb7479", "status": "affected", "versionType": "git" }, { "version": "a78f9f4668949a6588b8872f162e86685c63d023", "lessThan": "04ba24bce61c917b5b3009f0db470cbb72e26a0d", "status": "affected", "versionType": "git" }, { "version": "a78f9f4668949a6588b8872f162e86685c63d023", "lessThan": "b4663405ae29d36011cd712d243456f3f9ab700d", "status": "affected", "versionType": "git" }, { "version": "a78f9f4668949a6588b8872f162e86685c63d023", "lessThan": "6a009f1e61b11d9e23d3c5aa1dacfb010945da45", "status": "affected", "versionType": "git" }, { "version": "a78f9f4668949a6588b8872f162e86685c63d023", "lessThan": "b9eb5c9fdd81d82976d4d5be2b2458eb7d7e46ec", "status": "affected", "versionType": "git" }, { "version": "a78f9f4668949a6588b8872f162e86685c63d023", "lessThan": "6176313622e34fa3e2b66b9d0682d1e1c6b365c5", "status": "affected", "versionType": "git" }, { "version": "a78f9f4668949a6588b8872f162e86685c63d023", "lessThan": "a3ccb57086dd7652d5ecb826486144198a98a8e9", "status": "affected", "versionType": "git" }, { "version": "a78f9f4668949a6588b8872f162e86685c63d023", "lessThan": "50f0cbec45b0f3fd7e1263d01916518dbf31eb3f", "status": "affected", "versionType": "git" }, { "version": "a78f9f4668949a6588b8872f162e86685c63d023", "lessThan": "0cdc7dde00ec63ac714271fa8b2918d630b8da1a", "status": "affected", "versionType": "git" }, { "version": "92f61d8a31e270f9391e7bcc0ac638bd4262a8e0", "status": "affected", "versionType": "git" }, { "version": "2.6.34.2", "lessThan": "2.6.35", "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/ocfs2/xattr.c" ], "versions": [ { "version": "2.6.35", "status": "affected" }, { "version": "0", "lessThan": "2.6.35", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.267", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.218", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.185", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.154", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.106", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.47", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1.11", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2.1", "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": "2.6.35", "versionEndExcluding": "5.10.267" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "5.15.218" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "6.1.185" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "6.6.154" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "6.12.106" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "6.18.47" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "7.1.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "7.2.1" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "7.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.34.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/743ac908282ac97ef6e73ac3a92df2cc8ecb7479" }, { "url": "https://git.kernel.org/stable/c/04ba24bce61c917b5b3009f0db470cbb72e26a0d" }, { "url": "https://git.kernel.org/stable/c/b4663405ae29d36011cd712d243456f3f9ab700d" }, { "url": "https://git.kernel.org/stable/c/6a009f1e61b11d9e23d3c5aa1dacfb010945da45" }, { "url": "https://git.kernel.org/stable/c/b9eb5c9fdd81d82976d4d5be2b2458eb7d7e46ec" }, { "url": "https://git.kernel.org/stable/c/6176313622e34fa3e2b66b9d0682d1e1c6b365c5" }, { "url": "https://git.kernel.org/stable/c/a3ccb57086dd7652d5ecb826486144198a98a8e9" }, { "url": "https://git.kernel.org/stable/c/50f0cbec45b0f3fd7e1263d01916518dbf31eb3f" }, { "url": "https://git.kernel.org/stable/c/0cdc7dde00ec63ac714271fa8b2918d630b8da1a" } ], "title": "ocfs2: fix missing metadata reservation for large xattrs", "x_generator": { "engine": "bippy-1.2.0" } } } }