Boletines de Vulnerabilidades

CVE-2026-23388

   
Software afectado LINUX KERNEL
 
In the Linux kernel, the following vulnerability has been resolved:

Squashfs: check metadata block offset is within range

Syzkaller reports a "general protection fault in squashfs_copy_data"

This is ultimately caused by a corrupted index look-up table, which
produces a negative metadata block offset.

This is subsequently passed to squashfs_copy_data (via
squashfs_read_metadata) where the negative offset causes an out of bounds
access.

The fix is to check that the offset is within range in
squashfs_read_metadata. This will trap this and other cases.

Link:

https://nvd.nist.gov/vuln/detail/CVE-2026-23388