CVE-2025-38382

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.

This vulnerability does not affect supported Red Hat Enterprise Linux releases because the vulnerable Btrfs file system code is not present in enterprise kernels. Additionally, Btrfs is neither enabled nor supported in production Red Hat Enterprise Linux environments. As a result, systems running supported Red Hat enterprise products are not exposed to potential memory access issues during file system log replay operations.