CVE-2026-23388
Published: March 26, 2026Last modified: April 9, 2026
Description
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.
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.167-r0) |
| 25 LTS | linux-lts | Fixed (6.12.80-r0) | |
| Stream | linux-lts | Fixed (6.12.80-r0) |
References
- 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