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CVE-2026-31431 High

Confirmed as exploited

crypto: algif_aead - Revert to operating out-of-place

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.

Exploit probability 99.9%
Published April 22, 2026
Required by May 15, 2026
Last source change August 15, 2026

01 / ACTION

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.

02 / AFFECTED SOFTWARE

Affected packages

Linux Kernel
Unknown Unknown

03 / CONNECTIONS

Connected vulnerabilities

related OPENSUSE-SU-2026:21555-1

04 / EVIDENCE

Source records

Cybersecurity and Infrastructure Security Agency Known Exploited Vulnerabilities CVE-2026-31431

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

View original source
Open Source Vulnerabilities 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.

View original source

05 / REFERENCES

Further evidence