CVE-2026-31431 Details.
Copy Fail - Linux Kernel Local Privilege Escalation via AF_ALG
Atlas does not check this one. Not a plain web check.
This weakness is not found through ordinary web pages. It needs a different kind of connection to the service. Atlas only runs plain web, DNS and TLS checks, so it does not run this one.
About CVE-2026-31431. What It Means.
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.
Affected Product. What Is Hit.
- Vendor
- linux
- Product
- Linux Kernel
References. Where To Read More.
FAQ
Common Questions.
Copy Fail - Linux Kernel Local Privilege Escalation via AF_ALG. 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.
No. This weakness is not found through ordinary web pages. It needs a different kind of connection to the service. Atlas only runs plain web, DNS and TLS checks, so it does not run this one. The facts about CVE-2026-31431 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
Yes. CVE-2026-31431 is on the CISA Known Exploited Vulnerabilities list, which means attackers have used it against real targets.
Update Linux Kernel to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-31431. Atlas does not run a check for it, so nothing here says whether a particular site is affected.