Trust of System Event Data Affecting perf-debuginfo package, versions <1:6.1.161-183.298.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.07% (21st percentile)

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  • Snyk IDSNYK-AMZN2023-PERFDEBUGINFO-15849311
  • published30 Mar 2026
  • disclosed13 Jan 2026

Introduced: 13 Jan 2026

CVE-2025-68788  (opens in a new tab)
CWE-360  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 perf-debuginfo to version 1:6.1.161-183.298.amzn2023 or higher.
This issue was patched in ALAS2023-2026-1494.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perf-debuginfo package and not the perf-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:

fsnotify: do not generate ACCESS/MODIFY events on child for special files

inotify/fanotify do not allow users with no read access to a file to subscribe to events (e.g. IN_ACCESS/IN_MODIFY), but they do allow the same user to subscribe for watching events on children when the user has access to the parent directory (e.g. /dev).

Users with no read access to a file but with read access to its parent directory can still stat the file and see if it was accessed/modified via atime/mtime change.

The same is not true for special files (e.g. /dev/null). Users will not generally observe atime/mtime changes when other users read/write to special files, only when someone sets atime/mtime via utimensat().

Align fsnotify events with this stat behavior and do not generate ACCESS/MODIFY events to parent watchers on read/write of special files. The events are still generated to parent watchers on utimensat(). This closes some side-channels that could be possibly used for information exfiltration [1].

[1] https://snee.la/pdf/pubs/file-notification-attacks.pdf

CVSS Base Scores

version 3.1