CVE-2026-31431

MEDIUMCISA KEVEPSS 100th pctl

5.5

CVSS v3

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating out-of-place This mostly reverts commit 72548b093ee3 except for the copying of the associated data. There is no benefit in operating in-place in algif_aead since the source and destination come from different mappings. Get rid of all the complexity added for in-place operation and just copy the AD directly.

CWE-669 CWE-1288

How to fix

Remediation Available

bpftoolAmazon

Fixed in:1:6.1.168-203.330.amzn2023

bpftool-debuginfoAmazon

Fixed in:1:6.1.168-203.330.amzn2023

bpftool6.12Amazon

Fixed in:1:6.12.80-106.156.amzn2023

bpftool6.12-debuginfoAmazon

Fixed in:1:6.12.80-106.156.amzn2023

bpftool6.18Amazon

Fixed in:1:6.18.20-41.237.amzn2023

bpftool6.18-debuginfoAmazon

Fixed in:1:6.18.20-41.237.amzn2023

kernelAmazon

Fixed in:0:4.14.355-281.727.amzn2

Fixed in:1:6.1.168-203.330.amzn2023

kernel-debuginfoAmazon

Fixed in:0:4.14.355-281.727.amzn2

Fixed in:1:6.1.168-203.330.amzn2023

kernel-debuginfo-common-aarch64Amazon

Fixed in:0:4.14.355-281.727.amzn2

Fixed in:1:6.1.168-203.330.amzn2023

kernel-debuginfo-common-x86_64Amazon

Fixed in:0:4.14.355-281.727.amzn2

Fixed in:1:6.1.168-203.330.amzn2023

kernel-develAmazon

Fixed in:0:4.14.355-281.727.amzn2

Fixed in:1:6.1.168-203.330.amzn2023

kernel-headersAmazon

Fixed in:0:4.14.355-281.727.amzn2

Fixed in:1:6.1.168-203.330.amzn2023

kernel-livepatch-4.14.355-281.727Amazon

Fixed in:0:1.0-0.amzn2

kernel-livepatch-6.1.168-203.330Amazon

Fixed in:1:1.0-0.amzn2023

kernel-livepatch-6.12.80-106.156Amazon

Fixed in:1:1.0-0.amzn2023

kernel-livepatch-6.18.20-41.237Amazon

Fixed in:1:1.0-0.amzn2023

kernel-modules-extraAmazon

Fixed in:1:6.1.168-203.330.amzn2023

kernel-modules-extra-commonAmazon

Fixed in:1:6.1.168-203.330.amzn2023

kernel-toolsAmazon

Fixed in:0:4.14.355-281.727.amzn2

Fixed in:1:6.1.168-203.330.amzn2023

kernel-tools-debuginfoAmazon

Fixed in:0:4.14.355-281.727.amzn2

Fixed in:1:6.1.168-203.330.amzn2023

kernel-tools-develAmazon

Fixed in:0:4.14.355-281.727.amzn2

Fixed in:1:6.1.168-203.330.amzn2023

kernel6.12Amazon

Fixed in:1:6.12.80-106.156.amzn2023

kernel6.12-debuginfoAmazon

Fixed in:1:6.12.80-106.156.amzn2023

kernel6.12-debuginfo-common-aarch64Amazon

Fixed in:1:6.12.80-106.156.amzn2023

kernel6.12-debuginfo-common-x86_64Amazon

Fixed in:1:6.12.80-106.156.amzn2023

kernel6.12-develAmazon

Fixed in:1:6.12.80-106.156.amzn2023

kernel6.12-headersAmazon

Fixed in:1:6.12.80-106.156.amzn2023

kernel6.12-modules-extraAmazon

Fixed in:1:6.12.80-106.156.amzn2023

kernel6.12-modules-extra-commonAmazon

Fixed in:1:6.12.80-106.156.amzn2023

kernel6.12-toolsAmazon

Fixed in:1:6.12.80-106.156.amzn2023

This vulnerability affects an unusually large number of packages. The highest-confidence fixes are shown above; the full list is longer. Check the referenced advisories for complete coverage.

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

99.91%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Remediation due: 2026-05-15

References

Related Vulnerabilities

Other CWE-669 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2002-0055	Medium	5.0	35%	-	-
CVE-2026-25253	High	8.8	24%	-	Fix
CVE-2020-1048	High	7.8	16%	-	-
CVE-2021-22900	High	7.2	14%	KEV	-
CVE-2020-6862	Medium	5.3	6.3%	-	-
CVE-2021-30120	Critical	9.9	5.7%	-	-

Common questions

How do I fix CVE-2026-31431?

Published advisories record a fix for 208 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2026-31431 being actively exploited?

Yes. CVE-2026-31431 is listed in the CISA Known Exploited Vulnerabilities catalog, which means exploitation has been observed in the wild. US federal agencies were required to remediate it by 2026-05-15. Treat it as a priority whatever its CVSS score says.

How severe is CVE-2026-31431?

CVE-2026-31431 has a CVSS v3 base score of 5.5, rated moderate. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-31431 affect?

Published advisories record a fix for bpftool (Amazon), bpftool-debuginfo (Amazon), bpftool6.12 (Amazon), bpftool6.12-debuginfo (Amazon), and 204 more. The list on this page is capped, so there may be more.

Embed a live status badge for CVE-2026-31431

Markdown

[![CVE-2026-31431](https://tridentstack.com/cve/badge/CVE-2026-31431.svg)](https://tridentstack.com/cve/CVE-2026-31431)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-31431"><img src="https://tridentstack.com/cve/badge/CVE-2026-31431.svg" alt="CVE-2026-31431"></a>

This vulnerability is actively exploited in the wild

TridentStack Control detects known-exploited CVEs across your Linux fleet and prioritizes their patches. 200 endpoints free forever.

Scan your fleet free Start freeThis CVE lookup is free and always will be.

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-09-08.