185 lines
8.8 KiB
JSON
185 lines
8.8 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-2026-97950",
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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": "2026-09-25T10:22:58.970Z",
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"dateUpdated": "2026-10-21T12:53:48.740Z"
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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": "2026-10-21T12:53:48.740Z"
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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: pin the symlink target's dirent instead of chasing ->ci_dentry\n\ncreate_link() reads the target's configfs_dirent from\nitem->ci_dentry->d_fsdata, relying on the item reference taken by\nget_target(). That reference pins the item, not its dentry: the dentry is\npinned by DCACHE_PERSISTENT, which configfs_remove_dir() releases via\nsimple_rmdir() while the item is still alive. A symlink racing with rmdir\nof its target can therefore find ->ci_dentry freed and its dirent\nreleased, triggering WARN_ON(!atomic_read(&sd->s_count)) in configfs_get().\n\nTake the dirent in get_target() as well, under ->d_lock and atomically\nwith the item reference, and pass it down to create_link(). A hashed\ndentry has not been killed yet, so its ->d_fsdata reference keeps the\ndirent alive there."
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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/symlink.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": "a44744454eafbc158e8c8e3ef8d207076410b195",
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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": "846ff40fd57a47e59a41f4e331ec3b34efaddc23",
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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": "4f54beb2e7f6d399396466682fba3539bcdcb414",
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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": "d47c5de1cd6bfbe1067fc310bf90e4e00205e839",
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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": "a7c1290eef60711c10289c056ad32ed1f2b47b12",
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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/symlink.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/a44744454eafbc158e8c8e3ef8d207076410b195"
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},
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{
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"url": "https://git.kernel.org/stable/c/846ff40fd57a47e59a41f4e331ec3b34efaddc23"
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},
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{
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"url": "https://git.kernel.org/stable/c/4f54beb2e7f6d399396466682fba3539bcdcb414"
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},
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{
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"url": "https://git.kernel.org/stable/c/d47c5de1cd6bfbe1067fc310bf90e4e00205e839"
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},
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{
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"url": "https://git.kernel.org/stable/c/a7c1290eef60711c10289c056ad32ed1f2b47b12"
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}
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],
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"title": "configfs: pin the symlink target's dirent instead of chasing ->ci_dentry",
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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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} |