CVE-2026-43290 media: uvcvideo: Return queued buffers on start_streaming() failure
A bug in the Linux kernel's uvcvideo driver can cause a system warning and potential USB controller failure when streaming fails to start.
- 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-2026-43290?
CVE-2026-43290 is a high-severity denial of service vulnerability in Linux kernel, published on 8 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: uvcvideo: Return queued buffers on start_streaming() failure
Return buffers if streaming fails to start due to uvc_pm_get() error.
This bug may be responsible for a warning I got running
while :; do yavta -c3 /dev/video0; done
on an xHCI controller which failed under this workload. I had no luck reproducing this warning again to confirm.
xhci_hcd 0000:09:00.0: HC died; cleaning up usb 13-2: USB disconnect, device number 2 WARNING: CPU: 2 PID: 29386 at drivers/media/common/videobuf2/videobuf2-core.c:1803 vb2_start_streaming+0xac/0x120
Which versions are affected by CVE-2026-43290?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-43290?
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-2026-43290 being exploited?
There is no known exploitation of CVE-2026-43290 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-43290, DEBIAN-CVE-2026-43290, GHSA-w25g-q69r-fvpq, UBUNTU-CVE-2026-43290.