CVE-2026-31431
MEDIUMCISA KEVEPSS 100th pctlDescription
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.
How to fix
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
Impact
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Exploit Intelligence
Very high risk: more likely to be exploited than 100% of all known CVEs.
Remediation due: 2026-05-15
References
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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-2020-1048 | High | 7.8 | 17% | - | - |
| CVE-2021-22900 | High | 7.2 | 14% | KEV | - |
| CVE-2026-25253 | High | 8.8 | 8.0% | - | Fix |
| 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 153 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 linux (Debian), bpftool (Rocky), bpftool (Red Hat / RHEL), bpftool-debuginfo (Rocky), and 149 more. The list on this page is capped, so there may be more.
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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 2026-07-28.