CVE-2026-46058 media: amphion: Fix race between m2m job_abort and device_run
A race condition in the Linux kernel amphion VPU driver causes a use-after-free crash, leading to denial of service.
- 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-2026-46058?
CVE-2026-46058 is a high-severity 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:
media: amphion: Fix race between m2m job_abort and device_run
Fix kernel panic caused by race condition where v4l2_m2m_ctx_release() frees m2m_ctx while v4l2_m2m_try_run() is about to call device_run with the same context.
Race sequence: v4l2_m2m_try_run(): v4l2_m2m_ctx_release(): lock/unlock v4l2_m2m_cancel_job() job_abort() v4l2_m2m_job_finish() kfree(m2m_ctx) <- frees ctx device_run() <- use-after-free crash at 0x538
Crash trace: Unable to handle kernel read from unreadable memory at virtual address 0000000000000538 v4l2_m2m_try_run+0x78/0x138 v4l2_m2m_device_run_work+0x14/0x20
The amphion vpu driver does not rely on the m2m framework's device_run callback to perform encode/decode operations.
Fix the race by preventing m2m framework job scheduling entirely: - Add job_ready callback returning 0 (no jobs ready for m2m framework) - Remove job_abort callback to avoid the race condition
Weakness: CWE-362
Which versions are affected by CVE-2026-46058?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-46058?
Apply the vendor's patch.
Is CVE-2026-46058 being exploited?
There is no known exploitation of CVE-2026-46058 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-88719, BELL-CVE-2026-46058, DEBIAN-CVE-2026-46058, GHSA-j7pj-jr9c-8hg7, ROOT-OS-DEBIAN-12-CVE-2026-46058, ROOT-OS-UBUNTU-2404-CVE-2026-46058 and 1 more.