CVE-2025-38269

Summary

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

btrfs: exit after state insertion failure at btrfs_convert_extent_bit()

If insert_state() state failed it returns an error pointer and we call extent_io_tree_panic() which will trigger a BUG() call. However if CONFIG_BUG is disabled, which is an uncommon and exotic scenario, then we fallthrough and call cache_state() which will dereference the error pointer, resulting in an invalid memory access.

So jump to the 'out' label after calling extent_io_tree_panic(), it also makes the code more clear besides dealing with the exotic scenario where CONFIG_BUG is disabled.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxc91ea4bfa6dda549295ea7c15dfc990094d1fcd3 < 58c50f45e1821a04d61b62514f9bd34afe67c622affected
LinuxLinuxc91ea4bfa6dda549295ea7c15dfc990094d1fcd3 < 8d9d32088e304e2bc444a3087cab0bbbd9951866affected
LinuxLinuxc91ea4bfa6dda549295ea7c15dfc990094d1fcd3 < 3bf179e36da917c5d9bec71c714573ed1649b7c1affected
LinuxLinux6.7affected
LinuxLinux0 < 6.7unaffected
LinuxLinux6.12.34 <= 6.12.*unaffected
LinuxLinux6.15.3 <= 6.15.*unaffected
LinuxLinux6.16 <= *unaffected

Weaknesses

References