CVE-2026-43381

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Source
https://cve.org/CVERecord?id=CVE-2026-43381
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43381.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-43381
Downstream
Published
2026-05-08T14:21:29.340Z
Modified
2026-06-18T03:55:06.063160446Z
Summary
nouveau/dpcd: return EBUSY for aux xfer if the device is asleep
Details

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

nouveau/dpcd: return EBUSY for aux xfer if the device is asleep

If we have runtime suspended, and userspace wants to use /dev/drmdp* then just tell it the device is busy instead of crashing in the GSP code.

WARNING: CPU: 2 PID: 565741 at drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/rpc.c:164 r535gspmsgqwait+0x9a/0xb0 [nouveau] CPU: 2 UID: 0 PID: 565741 Comm: fwupd Not tainted 6.18.10-200.fc43.x8664 #1 PREEMPT(lazy) Hardware name: LENOVO 20QTS0PQ00/20QTS0PQ00, BIOS N2OET65W (1.52 ) 08/05/2024 RIP: 0010:r535gspmsgq_wait+0x9a/0xb0 [nouveau]

This is a simple fix to get backported. We should probably engineer a proper power domain solution to wake up devices and keep them awake while fw updates are happening.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43381.json"
}
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
8894f4919bc43f821775db2cfff4b917871b2102
Fixed
178df7c91e6c202579284df9f79d1592a514cdcf
Fixed
4df518aa196085909fd7e32518ecd27fba60ed69
Fixed
cd24cab2023aa46b595bc6b9cc39d8973d9d0a8c
Fixed
fad178ae894930520519ead3c8e0150641466360
Fixed
6bdd2d70c338d52c387d3b3aadc596784ae81b01
Fixed
ad8fa5bff53f5d1f8394f996850da8ce070eaee3
Fixed
24639553a016578222ac597db924dfb6fa5ec8b5
Fixed
8f3c6f08ababad2e3bdd239728cf66a9949446b4

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43381.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.16.0
Fixed
5.10.253
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.203
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.167
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.130
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.78
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.19
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
6.19.9

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43381.json"