{"id":"CVE-2026-53063","title":"dm cache: fix write hang in passthrough mode","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm cache: fix write hang in passthrough mode\n\nThe invalidate_remove() function has incomplete logic for handling write\nhit bios after cache invalidation. It sets up the…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= b29d4986d0da1a27cd35917cdb433672f5c95d7f < 9fa18d0b981776b190ca4632942a7c2174052b78","Linux >= b29d4986d0da1a27cd35917cdb433672f5c95d7f < ecb10c193cbebf5e6984246a9b4ff1f95d45ed87","Linux >= b29d4986d0da1a27cd35917cdb433672f5c95d7f < 64d6519b00be4116d365bd31f33a5e5ce2944c1a","Linux >= b29d4986d0da1a27cd35917cdb433672f5c95d7f < b8ace9e96983abb20ccf39edce8a60f1bb0b83d8","Linux >= b29d4986d0da1a27cd35917cdb433672f5c95d7f < 05798d091ebcfb6d68228890e593f209e8ac940d","Linux >= b29d4986d0da1a27cd35917cdb433672f5c95d7f < 4ca8b8bd952df7c3ccdc68af9bd3419d0839a04b","Linux 4.12"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T16:17:34.667186Z"},"published":"2026-06-24","updated":"2026-11-06","sourceUpdated":"2026-11-06T16:23:57.716Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-53063","references":[{"url":"https://git.kernel.org/stable/c/9fa18d0b981776b190ca4632942a7c2174052b78"},{"url":"https://git.kernel.org/stable/c/ecb10c193cbebf5e6984246a9b4ff1f95d45ed87"},{"url":"https://git.kernel.org/stable/c/64d6519b00be4116d365bd31f33a5e5ce2944c1a"},{"url":"https://git.kernel.org/stable/c/b8ace9e96983abb20ccf39edce8a60f1bb0b83d8"},{"url":"https://git.kernel.org/stable/c/05798d091ebcfb6d68228890e593f209e8ac940d"},{"url":"https://git.kernel.org/stable/c/4ca8b8bd952df7c3ccdc68af9bd3419d0839a04b"}],"tags":["cve.org"],"epss":0.00128,"epssPercentile":0.02469,"ingestedAt":"2026-11-06T16:57:43.301Z","slug":"CVE-2026-53063","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndm cache: fix write hang in passthrough mode\n\nThe invalidate_remove() function has incomplete logic for handling write\nhit bios after cache invalidation. It sets up the remapping for the\noverwrite_bio but then drops it immediately without submission, causing\nwrite operations to hang.\n\nFix by adding a new invalidate_committed() continuation that submits\nthe remapped writes to the cache origin after metadata commit completes,\nwhile using the overwrite_endio hook to ensure proper completion\nsequencing. This maintains existing coherency. Also improve error\nhandling in invalidate_complete() to preserve the original error status\ninstead of using bio_io_error() unconditionally.\n\n## Affected\n\n- `Linux >= b29d4986d0da1a27cd35917cdb433672f5c95d7f < 9fa18d0b981776b190ca4632942a7c2174052b78`\n- `Linux >= b29d4986d0da1a27cd35917cdb433672f5c95d7f < ecb10c193cbebf5e6984246a9b4ff1f95d45ed87`\n- `Linux >= b29d4986d0da1a27cd35917cdb433672f5c95d7f < 64d6519b00be4116d365bd31f33a5e5ce2944c1a`\n- `Linux >= b29d4986d0da1a27cd35917cdb433672f5c95d7f < b8ace9e96983abb20ccf39edce8a60f1bb0b83d8`\n- `Linux >= b29d4986d0da1a27cd35917cdb433672f5c95d7f < 05798d091ebcfb6d68228890e593f209e8ac940d`\n- `Linux >= b29d4986d0da1a27cd35917cdb433672f5c95d7f < 4ca8b8bd952df7c3ccdc68af9bd3419d0839a04b`\n- `Linux 4.12`\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":[]}