CVE-2026-31418 Affecting bpftool-debuginfo package, versions <1:6.1.168-202.320.amzn2023
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-AMZN2023-BPFTOOLDEBUGINFO-16625796
- published10 May 2026
- disclosed13 Apr 2026
Introduced: 13 Apr 2026
NewCVE-2026-31418 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2023 bpftool-debuginfo to version 1:6.1.168-202.320.amzn2023 or higher.
This issue was patched in ALAS2023-2026-1681.
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:
netfilter: ipset: drop logically empty buckets in mtype_del
mtype_del() counts empty slots below n->pos in k, but it only drops the bucket when both n->pos and k are zero. This misses buckets whose live entries have all been removed while n->pos still points past deleted slots.
Treat a bucket as empty when all positions below n->pos are unused and release it directly instead of shrinking it further.
References
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-31418
- https://git.kernel.org/stable/c/68ca0eea0af02bed36c5e2c13e9fa1647c31a7d4
- https://git.kernel.org/stable/c/6cea34d7ec6829b62f521a37a287f670144a2233
- https://git.kernel.org/stable/c/9862ef9ab0a116c6dca98842aab7de13a252ae02
- https://git.kernel.org/stable/c/ad92ee87462f9a3061361d392e9dbfe2e5c1c9fb
- https://git.kernel.org/stable/c/b7eef00f08b92b0b9efe8ae0df6d0005e6199323
- https://git.kernel.org/stable/c/ceacaa76f221a6577aba945bb8873c2e640aeba4
- https://git.kernel.org/stable/c/58f3a14826d4e6b0d5421f1a64be280b48601ea2
- https://git.kernel.org/stable/c/c098ff857e7ca923539164af5b3c2fe3e8f8afaf