CVE-2026-23388 (GCVE-0-2026-23388)

Vulnerability from cvelistv5 – Published: 2026-03-25 10:28 – Updated: 2026-11-05 21:33
VLAI
Title
Squashfs: check metadata block offset is within range
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.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-05 21:29 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6638 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f400e12656ab518be107febfe2315fb1eab5a342 , < 60f679f643f3f36a8571ea585e4ce5d93ef952b5 (git)
Affected: f400e12656ab518be107febfe2315fb1eab5a342 , < 3f68a9457a6190814377577374da75f872e0a013 (git)
Affected: f400e12656ab518be107febfe2315fb1eab5a342 , < 0c8ab092aec3ac4294940054772d30b511b16713 (git)
Affected: f400e12656ab518be107febfe2315fb1eab5a342 , < 6b847d65f5b0065e02080c61fad93d57d6686383 (git)
Affected: f400e12656ab518be107febfe2315fb1eab5a342 , < 9e9fa5ad37c9cbad73c165c7ff1e76e650825e7c (git)
Affected: f400e12656ab518be107febfe2315fb1eab5a342 , < 01ee0bcc29864b78249308e8b35042b09bbf5fe3 (git)
Affected: f400e12656ab518be107febfe2315fb1eab5a342 , < 3b9499e7d677dd4366239a292238489a804936b2 (git)
Affected: f400e12656ab518be107febfe2315fb1eab5a342 , < fdb24a820a5832ec4532273282cbd4f22c291a0d (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.29
Unaffected: 0 , < 2.6.29 (semver)
Unaffected: 5.10.253 , ≤ 5.10.* (semver)
Unaffected: 5.15.203 , ≤ 5.15.* (semver)
Unaffected: 6.1.167 , ≤ 6.1.* (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.77 , ≤ 6.12.* (semver)
Unaffected: 6.18.17 , ≤ 6.18.* (semver)
Unaffected: 6.19.7 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
guessed Create a notification for this product.
Show details on NVD website
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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

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