CVE-2026-43078 crypto: af_alg - Fix page reassignment overflow in af_alg_pull_tsgl
An integer overflow in the Linux kernel's af_alg crypto module allows attackers to trigger memory corruption, potentially leading to code execution or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-43078?
CVE-2026-43078 is a high-severity vulnerability in Linux kernel, published on 6 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
crypto: af_alg - Fix page reassignment overflow in af_alg_pull_tsgl
When page reassignment was added to af_alg_pull_tsgl the original loop wasn't updated so it may try to reassign one more page than necessary.
Add the check to the reassignment so that this does not happen.
Also update the comment which still refers to the obsolete offset argument.
Weakness: CWE-787
Which versions are affected by CVE-2026-43078?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-43078?
Apply the vendor's patch.
Is CVE-2026-43078 being exploited?
There is no known exploitation of CVE-2026-43078 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-43078, DEBIAN-CVE-2026-43078, GHSA-fqqq-mg72-x273, ROOT-OS-DEBIAN-11-CVE-2026-43078, ROOT-OS-UBUNTU-2204-CVE-2026-43078, ROOT-OS-UBUNTU-2404-CVE-2026-43078.