CVE-2026-43494 Affecting perf-debuginfo package, versions <1:6.1.172-216.329.amzn2023


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
0.27% (19th percentile)

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  • Snyk IDSNYK-AMZN2023-PERFDEBUGINFO-17287378
  • published10 Jun 2026
  • disclosed21 May 2026

Introduced: 21 May 2026

CVE-2026-43494  (opens in a new tab)
CWE-1341  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 perf-debuginfo to version 1:6.1.172-216.329.amzn2023 or higher.
This issue was patched in ALAS2023-2026-1752.

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:

net/rds: reset op_nents when zerocopy page pin fails

When iov_iter_get_pages2() fails in rds_message_zcopy_from_user(), the pinned pages are released with put_page(), and rm->data.op_mmp_znotifier is cleared. But we fail to properly clear rm->data.op_nents.

Later when rds_message_purge() is called from rds_sendmsg() the cleanup loop iterates over the incorrectly non zero number of op_nents and frees them again.

Fix this by properly resetting op_nents when it should be in rds_message_zcopy_from_user().

CVSS Base Scores

version 3.1