PT-2026-51957 · Linux · Linux

Published 2026-06-24 · Updated 2026-06-24 · CVE-2026-53063

NVD

In the Linux kernel, the following vulnerability has been resolved:

dm cache: fix write hang in passthrough mode

The invalidate remove() function has incomplete logic for handling write hit bios after cache invalidation. It sets up the remapping for the overwrite bio but then drops it immediately without submission, causing write operations to hang.

Fix by adding a new invalidate committed() continuation that submits the remapped writes to the cache origin after metadata commit completes, while using the overwrite endio hook to ensure proper completion sequencing. This maintains existing coherency. Also improve error handling in invalidate complete() to preserve the original error status instead of using bio io error() unconditionally.

Related Identifiers

CVE-2026-53063

Affected Products

Linux

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2026-53063 · Security Note
• https://git.kernel.org/stable/c/05798d091ebcfb6d68228890e593f209e8ac940d · Note
• https://git.kernel.org/stable/c/9fa18d0b981776b190ca4632942a7c2174052b78 · Note
• https://git.kernel.org/stable/c/ecb10c193cbebf5e6984246a9b4ff1f95d45ed87 · Note
• https://git.kernel.org/stable/c/b8ace9e96983abb20ccf39edce8a60f1bb0b83d8 · Note
• https://git.kernel.org/stable/c/4ca8b8bd952df7c3ccdc68af9bd3419d0839a04b · Note
• https://git.kernel.org/stable/c/64d6519b00be4116d365bd31f33a5e5ce2944c1a · Note