CVE-2026-46068 crypto: nx - fix bounce buffer leaks in nx842_crypto_{alloc,free}_ctx
A memory management error in the Linux kernel's nx842 crypto driver causes bounce buffer leaks, potentially leading to denial of service or code execution.
- 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-2026-46068?
CVE-2026-46068 is a high-severity memory corruption 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: nx - fix bounce buffer leaks in nx842_crypto_{alloc,free}_ctx
The bounce buffers are allocated with __get_free_pages() using BOUNCE_BUFFER_ORDER (order 2 = 4 pages), but both the allocation error path and nx842_crypto_free_ctx() release the buffers with free_page(). Use free_pages() with the matching order instead.
Weakness: CWE-787
Which versions are affected by CVE-2026-46068?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-46068?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-46068 being exploited?
There is no known exploitation of CVE-2026-46068 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-88548, BELL-CVE-2026-46068, DEBIAN-CVE-2026-46068, GHSA-55j4-rv4x-vqmx, ROOT-OS-DEBIAN-11-CVE-2026-46068, ROOT-OS-DEBIAN-12-CVE-2026-46068 and 3 more.