Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability
Linux — Linux
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.
7.8
96.3%
Vector breakdown
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Published
- Apr 22, 2026
- Modified
- Jul 15, 2026
- Added to KEV
- May 1, 2026
- Federal patch due
- May 15, 2026
CISA required action
"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Weakness classification
Proof-of-concept & exploitation references
Weaponization
Public repositories whose name or description references CVE-2026-31431, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
No public GitHub repositories referencing CVE-2026-31431 were found at last check. Absence here is not proof no exploit exists - see the references below for vendor advisories and write-ups.
References
Frequently asked questions
What is CVE-2026-31431?
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 severe is CVE-2026-31431?
CVE-2026-31431 has a CVSS base score of 7.8 out of 10 (CVSS 3.1).
Is CVE-2026-31431 actively exploited in the wild?
Yes. CVE-2026-31431 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added May 1, 2026, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2026-31431?
96.3% - meaning FIRST.org's EPSS model estimates a 96.3% probability this vulnerability will be exploited in the wild within 30 days (100% percentile among all scored CVEs).
What type of vulnerability is CVE-2026-31431?
CVE-2026-31431 is classified under CWE-669, CWE-1288 (CWE-669 Incorrect Resource Transfer Between Spheres).
Cross-checked against
Impactr finds and proves whether CVE-2026-31431 - or flaws like it - are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.
Join the waitlist