{"id":"CVE-2026-97950","title":"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 th…","summary":"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 th…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-825"],"vendor":"Linux","product":"Linux","affected":["Linux >= 7063fbf2261194f72ee75afca67b3b38b554b5fa < 846ff40fd57a47e59a41f4e331ec3b34efaddc23","Linux >= 7063fbf2261194f72ee75afca67b3b38b554b5fa < 4f54beb2e7f6d399396466682fba3539bcdcb414","Linux >= 7063fbf2261194f72ee75afca67b3b38b554b5fa < d47c5de1cd6bfbe1067fc310bf90e4e00205e839","Linux >= 7063fbf2261194f72ee75afca67b3b38b554b5fa < a7c1290eef60711c10289c056ad32ed1f2b47b12","Linux 2.6.16"],"published":"2026-09-25","updated":"2026-10-03","sourceUpdated":"2026-10-03T11:18:20.213","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-97950","references":[{"url":"https://git.kernel.org/stable/c/4f54beb2e7f6d399396466682fba3539bcdcb414","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/846ff40fd57a47e59a41f4e331ec3b34efaddc23","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a7c1290eef60711c10289c056ad32ed1f2b47b12","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d47c5de1cd6bfbe1067fc310bf90e4e00205e839","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97950.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-97950"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2541253"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97950"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97950"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97950.mbox"},{"url":"https://git.kernel.org/stable/c/a44744454eafbc158e8c8e3ef8d207076410b195"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00206,"epssPercentile":0.1059,"cvssSource":"vendor","ingestedAt":"2026-09-25T11:06:38.880Z","slug":"CVE-2026-97950","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97950.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":213359,"id":"CVE-2026-97950","ts":1790754699136,"field":"cvss","old":null,"new":"5.5"},{"seq":213358,"id":"CVE-2026-97950","ts":1790754699136,"field":"severity","old":"none","new":"medium"}]}