CVE-2026-23388

Published: Mar 25, 2026 Last Modified: Mar 25, 2026

ExploitDB:

Other exploit source:

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AI Translation Available

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.

https://git.kernel.org/stable/c/01ee0bcc29864b78249308e8b35042b09bbf5fe3

https://git.kernel.org/stable/c/0c8ab092aec3ac4294940054772d30b511b16713

https://git.kernel.org/stable/c/3b9499e7d677dd4366239a292238489a804936b2

https://git.kernel.org/stable/c/6b847d65f5b0065e02080c61fad93d57d6686383

https://git.kernel.org/stable/c/9e9fa5ad37c9cbad73c165c7ff1e76e650825e7c

https://git.kernel.org/stable/c/fdb24a820a5832ec4532273282cbd4f22c291a0d