185 lines
8.9 KiB
JSON
185 lines
8.9 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-2026-97949",
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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": "2026-09-25T10:18:58.205Z",
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"datePublished": "2026-09-25T10:22:58.375Z",
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"dateUpdated": "2026-10-21T12:53:47.600Z"
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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": "2026-10-21T12:53:47.600Z"
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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\nconfigfs: unhash the dentry before dropping the item in rmdir\n\nconfigfs_get_config_item() treats a hashed dentry as proof that\nsd->s_element is a live config_item. configfs_rmdir() breaks that:\nsimple_rmdir() leaves the dentry hashed, the last reference to the item is\ndropped right after, and the dentry is only unhashed by d_delete() once\n->rmdir() has returned. configfs_symlink() resolves its target holding no\nlock on it, so get_target() can land in that window:\n\n BUG: KASAN: slab-use-after-free in config_item_get+0x26/0x90\n get_target fs/configfs/symlink.c:128 [inline]\n configfs_symlink+0x4ab/0x1030 fs/configfs/symlink.c:185\n\nUnhash in configfs_remove_dir(), while the item is still guaranteed to be\nthere. A reference obtained just before that stays harmless, as\ncreate_link() rechecks CONFIGFS_USET_DROPPING, already set by\nconfigfs_detach_prep(). Both configfs_unregister_subsystem() paths\nd_drop() after detaching, so this only makes rmdir match them."
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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/configfs/dir.c"
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],
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"versions": [
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{
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"version": "7063fbf2261194f72ee75afca67b3b38b554b5fa",
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"lessThan": "b315d865660766d45ecdbf7433a4e3d36a554b3b",
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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": "7063fbf2261194f72ee75afca67b3b38b554b5fa",
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"lessThan": "446720051d44eebaa81b33969173160057b73a33",
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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": "7063fbf2261194f72ee75afca67b3b38b554b5fa",
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"lessThan": "5d7cbfb65e47cc71d5d94d87d5d0d1679080f3eb",
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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": "7063fbf2261194f72ee75afca67b3b38b554b5fa",
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"lessThan": "925d8564f1b2d9b46c5ab63b9bc942cea006da9b",
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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": "7063fbf2261194f72ee75afca67b3b38b554b5fa",
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"lessThan": "f06c2d26d1999d37e93299db0ecead04ca7d0b9f",
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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/configfs/dir.c"
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],
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"versions": [
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{
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"version": "2.6.16",
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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": "2.6.16",
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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": "6.6.160",
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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": "6.12.112",
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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": "6.18.53",
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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": "7.2.7",
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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": "2.6.16",
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"versionEndExcluding": "6.6.160"
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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": "2.6.16",
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"versionEndExcluding": "6.12.112"
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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": "2.6.16",
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"versionEndExcluding": "6.18.53"
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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": "2.6.16",
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"versionEndExcluding": "7.2.7"
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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": "2.6.16",
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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/b315d865660766d45ecdbf7433a4e3d36a554b3b"
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},
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{
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"url": "https://git.kernel.org/stable/c/446720051d44eebaa81b33969173160057b73a33"
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},
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{
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"url": "https://git.kernel.org/stable/c/5d7cbfb65e47cc71d5d94d87d5d0d1679080f3eb"
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},
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{
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"url": "https://git.kernel.org/stable/c/925d8564f1b2d9b46c5ab63b9bc942cea006da9b"
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},
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{
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"url": "https://git.kernel.org/stable/c/f06c2d26d1999d37e93299db0ecead04ca7d0b9f"
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}
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],
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"title": "configfs: unhash the dentry before dropping the item in rmdir",
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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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} |