{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-80806", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.794Z", "datePublished": "2026-09-04T15:13:20.282Z", "dateUpdated": "2026-10-19T08:43:59.390Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:43:59.390Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: don't enable DAX on new encrypted files\n\nCurrently, when a new encrypted regular file is created, the call to\next4_set_inode_flags(inode, init=true) in __ext4_new_inode() is made\nbefore EXT4_INODE_ENCRYPT is set. As a result, it can set S_DAX if the\nfilesystem is mounted with \"-o dax=always\".\n\nEXT4_INODE_ENCRYPT then actually gets set a bit later in\n__ext4_new_inode(), when it calls fscrypt_set_context() which calls\next4_set_context(). ext4_set_context() sets EXT4_INODE_ENCRYPT and\ncalls ext4_set_inode_flags(inode, init=false) to set S_ENCRYPTED too.\n\nThis was intended to clear S_DAX as well. However, this was broken by\ncommit 043546e46dc7 (\"fs/ext4: Only change S_DAX on inode load\"). This\ncauses data written to the file to bypass encryption, also causing\nxfstests failures such as generic/548 (when \"-o dax=always\" is used).\n\nFix this by simplifying the flow by making __ext4_new_inode() set\nEXT4_INODE_ENCRYPT earlier. This makes it take effect in\next4_set_inode_flags(inode, init=true), making S_DAX never be set.\n\nSimilarly, make EXT4_STATE_MAY_INLINE_DATA never be set in the first\nplace on new encrypted inodes. Then it doesn't need to be cleared.\n\nAs a result of these simplifications, ext4_set_context() no longer needs\nto change inode flags or state when 'handle != NULL'. Remove that too." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ext4/crypto.c", "fs/ext4/ialloc.c" ], "versions": [ { "version": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978", "lessThan": "add98959b220935b243170214c787bc03044a44d", "status": "affected", "versionType": "git" }, { "version": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978", "lessThan": "f53b325068bca0b238c3e0d2eb7de9b1f2268cab", "status": "affected", "versionType": "git" }, { "version": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978", "lessThan": "5959cad3cfa852ec07bbdaf9c17f4838a94a8e6c", "status": "affected", "versionType": "git" }, { "version": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978", "lessThan": "a13f61ba9b2a7a4ff1f140949ccfad23c5313757", "status": "affected", "versionType": "git" }, { "version": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978", "lessThan": "ed1cd834da65db127f1c30ff67e78f14825a06c1", "status": "affected", "versionType": "git" }, { "version": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978", "lessThan": "458776af0061afec1014cb3cd0061e282e482e83", "status": "affected", "versionType": "git" }, { "version": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978", "lessThan": "3392391b363a63ebb531d45318a729b1c998565b", "status": "affected", "versionType": "git" }, { "version": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978", "lessThan": "e27bae352158c007143d5bb50f3af33a177c0a37", "status": "affected", "versionType": "git" }, { "version": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978", "lessThan": "da32af420d6d466e247c43ac0b829edeac7ae0ad", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ext4/crypto.c", "fs/ext4/ialloc.c" ], "versions": [ { "version": "5.8", "status": "affected" }, { "version": "0", "lessThan": "5.8", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.269", "lessThanOrEqual": "5.10.*", "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": "6.18.47", "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": "5.8", "versionEndExcluding": "5.10.269" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "5.15.220" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.1.187" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.6.156" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.12.108" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.18.47" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "7.1.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "7.2.1" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "7.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/add98959b220935b243170214c787bc03044a44d" }, { "url": "https://git.kernel.org/stable/c/f53b325068bca0b238c3e0d2eb7de9b1f2268cab" }, { "url": "https://git.kernel.org/stable/c/5959cad3cfa852ec07bbdaf9c17f4838a94a8e6c" }, { "url": "https://git.kernel.org/stable/c/a13f61ba9b2a7a4ff1f140949ccfad23c5313757" }, { "url": "https://git.kernel.org/stable/c/ed1cd834da65db127f1c30ff67e78f14825a06c1" }, { "url": "https://git.kernel.org/stable/c/458776af0061afec1014cb3cd0061e282e482e83" }, { "url": "https://git.kernel.org/stable/c/3392391b363a63ebb531d45318a729b1c998565b" }, { "url": "https://git.kernel.org/stable/c/e27bae352158c007143d5bb50f3af33a177c0a37" }, { "url": "https://git.kernel.org/stable/c/da32af420d6d466e247c43ac0b829edeac7ae0ad" } ], "title": "ext4: don't enable DAX on new encrypted files", "x_generator": { "engine": "bippy-1.2.0" } } } }