CVE-2026-64316 crypto: caam - use print_hex_dump_devel to guard key hex dumps
Attackers can read sensitive cryptographic keys from kernel logs if dynamic debug is enabled, requiring a patch to restrict log output.
- 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-2026-64316?
CVE-2026-64316 is a medium-severity vulnerability in Linux kernel, published on 25 Jul 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: caam - use print_hex_dump_devel to guard key hex dumps
Use print_hex_dump_devel() for dumping sensitive key material in *_setkey() and gen_split_key() to avoid leaking secrets at runtime when CONFIG_DYNAMIC_DEBUG is enabled.
Which versions are affected by CVE-2026-64316?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-64316?
Apply the vendor's patch.
Is CVE-2026-64316 being exploited?
There is no known exploitation of CVE-2026-64316 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-93491, BELL-CVE-2026-64316, DEBIAN-CVE-2026-64316, GHSA-gf2r-w27p-ph9q, ROOT-OS-UBUNTU-2204-CVE-2026-64316, UBUNTU-CVE-2026-64316.