CVE-2026-45986 crypto: ccree - fix a memory leak in cc_mac_digest()
A memory leak in the Linux kernel's ccree crypto driver allows attackers to cause a denial of service by exhausting system memory.
- 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-2026-45986?
CVE-2026-45986 is a medium-severity denial of service vulnerability in Linux kernel, published on 27 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: ccree - fix a memory leak in cc_mac_digest()
Add cc_unmap_result() if cc_map_hash_request_final() fails to prevent potential memory leak.
Weakness: CWE-401
Which versions are affected by CVE-2026-45986?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-45986?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-45986 being exploited?
There is no known exploitation of CVE-2026-45986 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-88437, BELL-CVE-2026-45986, DEBIAN-CVE-2026-45986, GHSA-xr73-pf2q-ff9g, ROOT-OS-DEBIAN-11-CVE-2026-45986, ROOT-OS-DEBIAN-12-CVE-2026-45986 and 3 more.