{"id":"CVE-2026-89837","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix dentry folio leak in find_in_level\n\nfind_in_level() gets a dentry folio with f2fs_find_data_folio() before\ncalling find_in_block()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix dentry folio leak in find_in_level\n\nfind_in_level() gets a dentry folio with f2fs_find_data_folio() before\ncalling find_in_block().  If find_in_block() return…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= 7ad08a58bf67594057362e45cbddd3e27e53e557 < af9cc316d31371824de8d409260a2ab9759dd51c","Linux >= 7ad08a58bf67594057362e45cbddd3e27e53e557 < aefb4b0f465b6f95fe02b52d1822a3fb4a9ae922","Linux >= 7ad08a58bf67594057362e45cbddd3e27e53e557 < 93a3e6a4c9e726a13a935963e8dc43d181db1527","Linux >= 7ad08a58bf67594057362e45cbddd3e27e53e557 < cca7d3e30bf30333314e31bc70b9a739f1342167","Linux 5.11"],"published":"2026-09-16","updated":"2026-10-03","sourceUpdated":"2026-10-03T11:17:44.200","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-89837","references":[{"url":"https://git.kernel.org/stable/c/93a3e6a4c9e726a13a935963e8dc43d181db1527","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/aefb4b0f465b6f95fe02b52d1822a3fb4a9ae922","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/af9cc316d31371824de8d409260a2ab9759dd51c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cca7d3e30bf30333314e31bc70b9a739f1342167","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89837.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89837"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2535251"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89837"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89837"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89837.mbox"},{"url":"https://git.kernel.org/stable/c/b6c0e77d950bf80ab357e2b4b9667f4389ed417c"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00206,"epssPercentile":0.10589,"ingestedAt":"2026-09-16T10:53:53.998Z","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-772"],"slug":"CVE-2026-89837","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix dentry folio leak in find_in_level\n\nfind_in_level() gets a dentry folio with f2fs_find_data_folio() before\ncalling find_in_block().  If find_in_block() returns an error, the\nfunction stores the error in res_folio and breaks out of the loop without\ndropping the dentry folio.\n\nThis leaks the folio reference on the find_in_block() error path.  Drop\nthe dentry folio before returning the error to the caller.\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 · updated 2026-10-05 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89837.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":216267,"id":"CVE-2026-89837","ts":1791274051612,"field":"cvss","old":null,"new":"5.5"},{"seq":216266,"id":"CVE-2026-89837","ts":1791274051612,"field":"severity","old":"none","new":"medium"}]}