CVE-2025-21679: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: btrfs: add the missing error handling inside get_canonical_dev_path Inside function get_canonical_dev_path(), we call d_path() to get the final device path. But d_path() can return error, and in that case the next strscpy() call will trigger an invalid memory access. Add back the missing error handling for d_path().

Affected products

• Linux Linux Kernel: from 6.12.5, before 6.12.11 (fixed in 6.12.11); version 6.13 only

Published 2025-01-31. Last modified 2026-06-17.