Missing Release of Resource after Effective Lifetime Affecting perf-debuginfo package, versions <1:6.1.166-197.305.amzn2023


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.12% (3rd percentile)

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  • Snyk IDSNYK-AMZN2023-PERFDEBUGINFO-17409912
  • published23 Jun 2026
  • disclosed27 May 2026

Introduced: 27 May 2026

CVE-2026-45983  (opens in a new tab)
CWE-772  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 perf-debuginfo to version 1:6.1.166-197.305.amzn2023 or higher.
This issue was patched in ALAS2023-2026-1544.

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:

nfsd: never defer requests during idmap lookup

During v4 request compound arg decoding, some ops (e.g. SETATTR) can trigger idmap lookup upcalls. When those upcall responses get delayed beyond the allowed time limit, cache_check() will mark the request for deferral and cause it to be dropped.

This prevents nfs4svc_encode_compoundres from being executed, and thus the session slot flag NFSD4_SLOT_INUSE never gets cleared. Subsequent client requests will fail with NFSERR_JUKEBOX, given that the slot will be marked as in-use, making the SEQUENCE op fail.

Fix this by making sure that the RQ_USEDEFERRAL flag is always clear during nfs4svc_decode_compoundargs(), since no v4 request should ever be deferred.

CVSS Base Scores

version 3.1