{"id":"CVE-2026-64040","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-64040","generatedAt":"2026-10-28T06:13:27.042Z","title":"In the Linux kernel, the following vulnerability has been resolved: cachefiles: Fix error return when vfs_mkdir() fails When vfs_mkdir() fails, the error code is not extracted from the returned error pointer.","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncachefiles: Fix error return when vfs_mkdir() fails\n\nWhen vfs_mkdir() fails, the error code is not extracted from the\nreturned error pointer. This causes mkdir_error to be reached with\nret=0, which leads to returning ERR_PTR(0) (NULL) instead of a\nproper error pointer.\n\nFix this by extracting the error code from the error pointer when\nvfs_mkdir() fails.","published":"2026-07-19T16:17:44.000Z","lastModified":"2026-10-15T11:17:39.000Z","status":"Modified","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":{"version":"3.1","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-252"],"affected":["linux/linux kernel"],"epss":{"score":0.0016,"percentile":0.05131,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.16%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"scored","label":"Newly scored","at":"2026-10-06T19:30:04.000Z","detail":{"from":null,"score":"5.5","severity":"MEDIUM","fromSeverity":null},"summary":"Now scored CVSS 5.5 MEDIUM."}],"references":[{"url":"https://git.kernel.org/stable/c/0940108d27c6995e02819ff832be11892f0b208b","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/86f4c1586418d50203ee8d76cba5d7b148719a32","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8a220d1c312c66194f4a33dd52d1fba42bc2b341","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64040","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}