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Medium 5.5Published Mar 25, 2026

CVE-2026-23338drm/amdgpu/userq: Do not allow userspace to trivially triger kernel warnings

Updated under an hour ago ()

Does this affect you?

It affects Linux and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/userq: Do not allow userspace to trivially triger kernel warnings Userspace can either deliberately pass in the too small num_fences, or the required number can legitimately grow between the two calls to the userq wait ioctl. In both cases we do not want the emit the kernel warning backtrace since nothing is wrong with the kernel and userspace will simply get an errno reported back. So lets simply drop the WARN_ONs. (cherry picked from commit 2c333ea579de6cc20ea7bc50e9595ef72863e65c)

CVSS
5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE)
Not given
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
Linux
NVD analysis
Analyzed
Record last updated
May 11, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
Linux Linux
linux:linux (from the name)
from a292fdecd72834b3bec380baa5db1e69e7f70679 before 1753f5f81ab60a553287f9ee659a6ac363adf8d7; from a292fdecd72834b3bec380baa5db1e69e7f70679 before 7321302edca3a349ddaea689df95b986beee6c4a; from a292fdecd72834b3bec380baa5db1e69e7f70679 before 7b7d7693a55d606d700beb9549c9f7f0e5d9c24f
CNA record
linux linux_kernel
linux:linux_kernel
from 6.16.1 before 6.18.17; from 6.19 before 6.19.7; 6.16; 7.0; 7.0; 7.0; 7.0; 7.0; and 2 more ranges
NVD

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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CVE-2026-23338: drm/amdgpu/userq: Do not allow userspace to trivially triger kernel warnings | InfoSec Signals