CVE-2026-43400

Source
https://cve.org/CVERecord?id=CVE-2026-43400
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43400.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-43400
Downstream
Published
2026-05-08T14:21:42.225Z
Modified
2026-07-15T01:49:07.326989762Z
Summary
drm/amdgpu: add upper bound check on user inputs in signal ioctl
Details

In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu: add upper bound check on user inputs in signal ioctl

Huge input values in amdgpuuserqsignal_ioctl can lead to a OOM and could be exploited.

So check these input value against AMDGPUUSERQMAX_HANDLES which is big enough value for genuine use cases and could potentially avoid OOM.

(cherry picked from commit be267e15f99bc97cbe202cd556717797cdcf79a5)

Database specific
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43400.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
a292fdecd72834b3bec380baa5db1e69e7f70679
Fixed
6fff5204d8aa26b1be50b6427f833bd3e8899c4f
Fixed
46630d966b99b0fc6cb01fef4110587f3375a0c0
Fixed
ea78f8c68f4f6211c557df49174c54d167821962

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43400.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.16.0
Fixed
6.18.19
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
6.19.9

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43400.json"