Medium 5.5Published May 8, 2026

CVE-2026-43381nouveau/dpcd: return EBUSY for aux xfer if the device is asleep

Updated under an hour ago (Oct 27, 2026, 9:50 AM ET)

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.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Linux

Exploited in the last 30 days

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/drm_dp_* 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 r535_gsp_msgq_wait+0x9a/0xb0 [nouveau] CPU: 2 UID: 0 PID: 565741 Comm: fwupd Not tainted 6.18.10-200.fc43.x86_64 #1 PREEMPT(lazy) Hardware name: LENOVO 20QTS0PQ00/20QTS0PQ00, BIOS N2OET65W (1.52 ) 08/05/2024 RIP: 0010:r535_gsp_msgq_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.

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)	8894f4919bc43f821775db2cfff4b917871b2102 builds before 178df7c91e6c202579284df9f79d1592a514cdcf; 8894f4919bc43f821775db2cfff4b917871b2102 builds before 4df518aa196085909fd7e32518ecd27fba60ed69; from 8894f4919bc43f821775db2cfff4b917871b2102 before cd24cab2023aa46b595bc6b9cc39d8973d9d0a8c; from 8894f4919bc43f821775db2cfff4b917871b2102 before fad178ae894930520519ead3c8e0150641466360; 8894f4919bc43f821775db2cfff4b917871b2102 builds before 6bdd2d70c338d52c387d3b3aadc596784ae81b01; from 8894f4919bc43f821775db2cfff4b917871b2102 before ad8fa5bff53f5d1f8394f996850da8ce070eaee3; from 8894f4919bc43f821775db2cfff4b917871b2102 before 24639553a016578222ac597db924dfb6fa5ec8b5; 8894f4919bc43f821775db2cfff4b917871b2102 builds before 8f3c6f08ababad2e3bdd239728cf66a9949446b4	CNA record
linux linux_kernel linux:linux_kernel	from 3.16 before 5.10.253; from 5.11 before 5.15.203; from 5.16 before 6.1.167; from 6.2 before 6.6.130; from 6.7 before 6.12.78; from 6.13 before 6.18.19; from 6.19 before 6.19.9; 7.0; and 1 more ranges	NVD

References

References

https://git.kernel.org/stable/c/178df7c91e6c202579284df9f79d1592a514cdcf	patch
https://git.kernel.org/stable/c/4df518aa196085909fd7e32518ecd27fba60ed69	patch
https://git.kernel.org/stable/c/cd24cab2023aa46b595bc6b9cc39d8973d9d0a8c	patch
https://git.kernel.org/stable/c/fad178ae894930520519ead3c8e0150641466360	patch
https://git.kernel.org/stable/c/6bdd2d70c338d52c387d3b3aadc596784ae81b01	patch
https://git.kernel.org/stable/c/ad8fa5bff53f5d1f8394f996850da8ce070eaee3	patch
https://git.kernel.org/stable/c/24639553a016578222ac597db924dfb6fa5ec8b5	patch
https://git.kernel.org/stable/c/8f3c6f08ababad2e3bdd239728cf66a9949446b4	patch

The CVE record on cve.org NVD's entry

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.