CVE-2026-23388
N/A
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | f400e12656ab518be107febfe2315fb1eab5a342 < 60f679f643f3f36a8571ea585e4ce5d93ef952b5 | affected |
| Linux | Linux | f400e12656ab518be107febfe2315fb1eab5a342 < 3f68a9457a6190814377577374da75f872e0a013 | affected |
| Linux | Linux | f400e12656ab518be107febfe2315fb1eab5a342 < 0c8ab092aec3ac4294940054772d30b511b16713 | affected |
| Linux | Linux | f400e12656ab518be107febfe2315fb1eab5a342 < 6b847d65f5b0065e02080c61fad93d57d6686383 | affected |
| Linux | Linux | f400e12656ab518be107febfe2315fb1eab5a342 < 9e9fa5ad37c9cbad73c165c7ff1e76e650825e7c | affected |
| Linux | Linux | f400e12656ab518be107febfe2315fb1eab5a342 < 01ee0bcc29864b78249308e8b35042b09bbf5fe3 | affected |
| Linux | Linux | f400e12656ab518be107febfe2315fb1eab5a342 < 3b9499e7d677dd4366239a292238489a804936b2 | affected |
| Linux | Linux | f400e12656ab518be107febfe2315fb1eab5a342 < fdb24a820a5832ec4532273282cbd4f22c291a0d | affected |
| Linux | Linux | 2.6.29 | affected |
| Linux | Linux | 0 < 2.6.29 | unaffected |
| Linux | Linux | 5.10.253 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.203 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.167 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.130 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.77 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.17 <= 6.18.* | unaffected |
| Linux | Linux | 6.19.7 <= 6.19.* | unaffected |
| Linux | Linux | 7.0 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/60f679f643f3f36a8571ea585e4ce5d93ef952b5
- https://git.kernel.org/stable/c/3f68a9457a6190814377577374da75f872e0a013
- https://git.kernel.org/stable/c/0c8ab092aec3ac4294940054772d30b511b16713
- https://git.kernel.org/stable/c/6b847d65f5b0065e02080c61fad93d57d6686383
- https://git.kernel.org/stable/c/9e9fa5ad37c9cbad73c165c7ff1e76e650825e7c
- https://git.kernel.org/stable/c/01ee0bcc29864b78249308e8b35042b09bbf5fe3
- https://git.kernel.org/stable/c/3b9499e7d677dd4366239a292238489a804936b2
- https://git.kernel.org/stable/c/fdb24a820a5832ec4532273282cbd4f22c291a0d
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