Loop with Unreachable Exit Condition ('Infinite Loop') Affecting bpftool-debuginfo package, versions <0:6.1.127-135.201.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-AMZN2023-BPFTOOLDEBUGINFO-9524377
  • published27 Mar 2025
  • disclosed21 Jan 2025

Introduced: 21 Jan 2025

CVE-2024-57940  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 bpftool-debuginfo to version 0:6.1.127-135.201.amzn2023 or higher.
This issue was patched in ALAS2023-2025-823.

NVD Description

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

exfat: fix the infinite loop in exfat_readdir()

If the file system is corrupted so that a cluster is linked to itself in the cluster chain, and there is an unused directory entry in the cluster, 'dentry' will not be incremented, causing condition 'dentry < max_dentries' unable to prevent an infinite loop.

This infinite loop causes s_lock not to be released, and other tasks will hang, such as exfat_sync_fs().

This commit stops traversing the cluster chain when there is unused directory entry in the cluster to avoid this infinite loop.

CVSS Base Scores

version 3.1