Integer Underflow Affecting perf6.12-debuginfo package, versions <1:6.12.64-87.122.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.03% (11th percentile)

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  • Snyk IDSNYK-AMZN2023-PERF612DEBUGINFO-15317801
  • published19 Feb 2026
  • disclosed13 Jan 2026

Introduced: 13 Jan 2026

CVE-2025-68794  (opens in a new tab)
CWE-191  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 perf6.12-debuginfo to version 1:6.12.64-87.122.amzn2023 or higher.
This issue was patched in ALAS2023-2026-1423.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perf6.12-debuginfo package and not the perf6.12-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

iomap: adjust read range correctly for non-block-aligned positions

iomap_adjust_read_range() assumes that the position and length passed in are block-aligned. This is not always the case however, as shown in the syzbot generated case for erofs. This causes too many bytes to be skipped for uptodate blocks, which results in returning the incorrect position and length to read in. If all the blocks are uptodate, this underflows length and returns a position beyond the folio.

Fix the calculation to also take into account the block offset when calculating how many bytes can be skipped for uptodate blocks.

CVSS Base Scores

version 3.1