CVE-2025-38382 Information

Jul 26, 2025 cve

Description

In the Linux kernel the following vulnerability has been resolved:

btrfs: fix iteration of extrefs during log replay

At __inode_add_ref() when processing extrefs if we jump into the next label we have an undefined value of victim_name.len since we haven’t initialized it before we did the goto. This results in an invalid memory access in the next iteration of the loop since victim_name.len was not initialized to the length of the name of the current extref.

Fix this by initializing victim_name.len with the current extref’s name length.

Reference

https://git.kernel.org/stable/c/2d11d274e2e1d7c79e2ca8461ce3ff3a95c11171 https://git.kernel.org/stable/c/539969fc472886a1d63565459514d47e27fef461 https://git.kernel.org/stable/c/54a7081ed168b72a8a2d6ef4ba3a1259705a2926 https://git.kernel.org/stable/c/7ac790dc2ba00499a8d671d4a24de4d4ad27e234 https://git.kernel.org/stable/c/aee57a0293dca675637e5504709f9f8fd8e871be

CNNVD-202507-3208 (Published: 2025-07-25)

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