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Actively exploitedCVSS 7.8 · HIGH

CVE-2026-31431

Linux Kernel contains an incorrect resource transfer between spheres vulnerability that could allow for privilege escalation.

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Severity

Score: 7.8(HIGH)
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AV: LOCAL
AC: LOW
PR: LOW
UI: NONE
S: UNCHANGED
C: HIGH
I: HIGH
A: HIGH
Weakness (CWE): CWE-669

CISA KEV

Added to KEV: 2026-05-01
Federal patch deadline: 2026-05-15
Known ransomware use: Unknown
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.

EPSS

Probability of exploitation (next 30 days): 0.0123 (1.2%)
Percentile: 79.2%
EPSS: 2026-05-06

Affects

linux:linux_kernelredhat:openshift_container_platformredhat:enterprise_linuxamazon:amazon_linuxcanonical:ubuntu_linuxsuse:suse_linux

Technical 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.

Published: 4/22/2026, 9:16:21 AM
Last modified: 5/6/2026, 1:53:24 PM

References

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