{"schema":"threatline.record/2","record":{"id":"CVE-2026-97950","aliases":[],"summary":"configfs: pin the symlink target's dirent instead of chasing ->ci_dentry","details":"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.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97950","source_modified_at":"2026-10-21T12:53:48.740Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"7063fbf2261194f72ee75afca67b3b38b554b5fa","lessThan":"a44744454eafbc158e8c8e3ef8d207076410b195","status":"affected","versionType":"git"},{"version":"7063fbf2261194f72ee75afca67b3b38b554b5fa","lessThan":"846ff40fd57a47e59a41f4e331ec3b34efaddc23","status":"affected","versionType":"git"},{"version":"7063fbf2261194f72ee75afca67b3b38b554b5fa","lessThan":"4f54beb2e7f6d399396466682fba3539bcdcb414","status":"affected","versionType":"git"},{"version":"7063fbf2261194f72ee75afca67b3b38b554b5fa","lessThan":"d47c5de1cd6bfbe1067fc310bf90e4e00205e839","status":"affected","versionType":"git"},{"version":"7063fbf2261194f72ee75afca67b3b38b554b5fa","lessThan":"a7c1290eef60711c10289c056ad32ed1f2b47b12","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97950","source_modified_at":"2026-10-21T12:53:48.740Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"2.6.16","status":"affected"},{"version":"0","lessThan":"2.6.16","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.112","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.53","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.7","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97950","source_modified_at":"2026-10-21T12:53:48.740Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"846ff40fd57a47e59a41f4e331ec3b34efaddc23","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97950","source_modified_at":"2026-10-21T12:53:48.740Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"4f54beb2e7f6d399396466682fba3539bcdcb414","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.002,"percentile":0.09342,"score_date":"2026-10-23"},"published_at":"2026-09-25T10:22:58.970Z","modified_at":"2026-10-21T12:53:48.740Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-97950","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T12:53:48.740Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-97950","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/a44744454eafbc158e8c8e3ef8d207076410b195"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/846ff40fd57a47e59a41f4e331ec3b34efaddc23"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/4f54beb2e7f6d399396466682fba3539bcdcb414"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/d47c5de1cd6bfbe1067fc310bf90e4e00205e839"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/a7c1290eef60711c10289c056ad32ed1f2b47b12"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-21T12:53:48.740Z","content_hash":"835617ffe53c1bc456d8c73cc3469434617f2cd2bab3cff11f4fe30e8fb95b71"}}