Use After Free Affecting perf-debuginfo package, versions <0:4.14.256-197.484.amzn2


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.11% (31st percentile)

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  • Snyk IDSNYK-AMZN2-PERFDEBUGINFO-10265501
  • published30 May 2025
  • disclosed22 May 2024

Introduced: 22 May 2024

CVE-2021-47480  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 perf-debuginfo to version 0:4.14.256-197.484.amzn2 or higher.
This issue was patched in ALAS2-2025-2752.

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:2 relevant fixed versions and status.

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

scsi: core: Put LLD module refcnt after SCSI device is released

SCSI host release is triggered when SCSI device is freed. We have to make sure that the low-level device driver module won't be unloaded before SCSI host instance is released because shost->hostt is required in the release handler.

Make sure to put LLD module refcnt after SCSI device is released.

Fixes a kernel panic of 'BUG: unable to handle page fault for address' reported by Changhui and Yi.

CVSS Base Scores

version 3.1