{"id":"CVE-2026-68312","title":"In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: fix cifsFileInfo leak on kmalloc failure in deferred close drain paths\n\nIn cifs_close_deferred_file(), cifs_close_all_deferred_files(), and\ncifs_close_deferred_fi…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: fix cifsFileInfo leak on kmalloc failure in deferred close drain paths\n\nIn cifs_close_deferred_file(), cifs_close_all_deferred_files(), and\ncifs_close_deferred_fi…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= e3fc065682ebbbd15b0ce0036800f4acbf765d46 < 6089f561e2c31a3ba52836c75c7d2ab50d2eea41","Linux >= e3fc065682ebbbd15b0ce0036800f4acbf765d46 < 32390b3f06f26e366cfb27dbac4bc0196c321535","Linux >= e3fc065682ebbbd15b0ce0036800f4acbf765d46 < c2f2e83e3bbc5483730fd4ee903182761f1ae50f","Linux 5.15"],"published":"2026-08-10","updated":"2026-10-15","sourceUpdated":"2026-10-15T11:17:40.977","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-68312","references":[{"url":"https://git.kernel.org/stable/c/32390b3f06f26e366cfb27dbac4bc0196c321535","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6089f561e2c31a3ba52836c75c7d2ab50d2eea41","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c2f2e83e3bbc5483730fd4ee903182761f1ae50f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00189,"epssPercentile":0.08011,"ingestedAt":"2026-10-15T11:00:41.692Z","slug":"CVE-2026-68312","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ncifs: fix cifsFileInfo leak on kmalloc failure in deferred close drain paths\n\nIn cifs_close_deferred_file(), cifs_close_all_deferred_files(), and\ncifs_close_deferred_file_under_dentry(), when a pending deferred close\nis cancelled via cancel_delayed_work(), the subsequent kmalloc_obj() to\nadd the file to the local processing list may fail under memory pressure.\nThe loop breaks immediately, but the cancelled work is no longer pending\n(it would have called _cifsFileInfo_put()), and the cfile is never added\nto file_head for processing.  The cifsFileInfo reference and the open\nserver handle both leak.\n\nFix by saving the cfile that failed allocation in a local variable,\nbreaking as before, and calling _cifsFileInfo_put() on it after\nreleasing the lock.  Any files later in the iteration are unaffected\nsince their deferred work is still pending and will fire normally.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}