271 lines
14 KiB
JSON
271 lines
14 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-2026-80806",
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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": "2026-08-26T14:34:25.794Z",
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"datePublished": "2026-09-04T15:13:20.282Z",
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"dateUpdated": "2026-10-19T08:43:59.390Z"
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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": "2026-10-19T08:43:59.390Z"
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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\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."
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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/ext4/crypto.c",
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"fs/ext4/ialloc.c"
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],
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"versions": [
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{
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"version": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978",
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"lessThan": "add98959b220935b243170214c787bc03044a44d",
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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": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978",
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"lessThan": "f53b325068bca0b238c3e0d2eb7de9b1f2268cab",
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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": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978",
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"lessThan": "5959cad3cfa852ec07bbdaf9c17f4838a94a8e6c",
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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": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978",
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"lessThan": "a13f61ba9b2a7a4ff1f140949ccfad23c5313757",
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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": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978",
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"lessThan": "ed1cd834da65db127f1c30ff67e78f14825a06c1",
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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": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978",
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"lessThan": "458776af0061afec1014cb3cd0061e282e482e83",
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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": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978",
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"lessThan": "3392391b363a63ebb531d45318a729b1c998565b",
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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": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978",
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"lessThan": "e27bae352158c007143d5bb50f3af33a177c0a37",
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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": "043546e46dc70c25ff7e2cf6d09cbb0424fc9978",
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"lessThan": "da32af420d6d466e247c43ac0b829edeac7ae0ad",
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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/ext4/crypto.c",
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"fs/ext4/ialloc.c"
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],
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"versions": [
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{
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"version": "5.8",
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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": "5.8",
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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": "5.10.269",
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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": "6.18.47",
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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": "7.1.11",
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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": "7.2.1",
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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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{
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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": "5.8",
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"versionEndExcluding": "5.10.269"
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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": "5.8",
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"versionEndExcluding": "5.15.220"
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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": "5.8",
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"versionEndExcluding": "6.1.187"
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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": "5.8",
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"versionEndExcluding": "6.6.156"
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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": "5.8",
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"versionEndExcluding": "6.12.108"
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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": "5.8",
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"versionEndExcluding": "6.18.47"
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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": "5.8",
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"versionEndExcluding": "7.1.11"
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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": "5.8",
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"versionEndExcluding": "7.2.1"
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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": "5.8",
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"versionEndExcluding": "7.3"
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}
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]
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}
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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/add98959b220935b243170214c787bc03044a44d"
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},
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{
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"url": "https://git.kernel.org/stable/c/f53b325068bca0b238c3e0d2eb7de9b1f2268cab"
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},
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{
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"url": "https://git.kernel.org/stable/c/5959cad3cfa852ec07bbdaf9c17f4838a94a8e6c"
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},
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{
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"url": "https://git.kernel.org/stable/c/a13f61ba9b2a7a4ff1f140949ccfad23c5313757"
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},
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{
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"url": "https://git.kernel.org/stable/c/ed1cd834da65db127f1c30ff67e78f14825a06c1"
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},
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{
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"url": "https://git.kernel.org/stable/c/458776af0061afec1014cb3cd0061e282e482e83"
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},
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{
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"url": "https://git.kernel.org/stable/c/3392391b363a63ebb531d45318a729b1c998565b"
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},
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{
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"url": "https://git.kernel.org/stable/c/e27bae352158c007143d5bb50f3af33a177c0a37"
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},
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{
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"url": "https://git.kernel.org/stable/c/da32af420d6d466e247c43ac0b829edeac7ae0ad"
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}
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],
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"title": "ext4: don't enable DAX on new encrypted files",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |