{"id":"CVE-2026-64160","title":"netfs: Fix potential for tearing in ->remote_i_size and ->zero_point","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfs: Fix potential for tearing in ->remote_i_size and ->zero_point\n\nFix potential tearing in using ->remote_i_size and ->zero_point by copying\ni_size_read() and i_siz…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 4058f742105ecfcbdf99e1139e6c1f74fb8e6db9 < 55970f238d495517edc961d55c44c772594d0969","Linux >= 4058f742105ecfcbdf99e1139e6c1f74fb8e6db9 < 2c8f4742bb76117d735f92a3932d85239b16c494","Linux 5.18"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-10-16T15:37:03.470970Z"},"published":"2026-07-19","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:42:24.995Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64160","references":[{"url":"https://git.kernel.org/stable/c/55970f238d495517edc961d55c44c772594d0969"},{"url":"https://git.kernel.org/stable/c/2c8f4742bb76117d735f92a3932d85239b16c494"}],"tags":["cve.org"],"epss":0.00553,"epssPercentile":0.45002,"ingestedAt":"2026-10-16T17:24:46.808Z","slug":"CVE-2026-64160","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnetfs: Fix potential for tearing in ->remote_i_size and ->zero_point\n\nFix potential tearing in using ->remote_i_size and ->zero_point by copying\ni_size_read() and i_size_write() and using the same seqcount as for i_size.\n\nWe need to make sure that netfslib and the filesystems that use it always\nhold i_lock whilst updating any of the sizes to prevent i_size_seqcount\nfrom getting corrupted.\n\n## Affected\n\n- `Linux >= 4058f742105ecfcbdf99e1139e6c1f74fb8e6db9 < 55970f238d495517edc961d55c44c772594d0969`\n- `Linux >= 4058f742105ecfcbdf99e1139e6c1f74fb8e6db9 < 2c8f4742bb76117d735f92a3932d85239b16c494`\n- `Linux 5.18`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}