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Description

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.

PUBLISHED Reserved 2026-05-01 | Published 2026-05-08 | Updated 2026-05-08 | Assigner Linux

Product status

Default status
unaffected

8894f4919bc43f821775db2cfff4b917871b2102 (git) before 178df7c91e6c202579284df9f79d1592a514cdcf
affected

8894f4919bc43f821775db2cfff4b917871b2102 (git) before 4df518aa196085909fd7e32518ecd27fba60ed69
affected

8894f4919bc43f821775db2cfff4b917871b2102 (git) before cd24cab2023aa46b595bc6b9cc39d8973d9d0a8c
affected

8894f4919bc43f821775db2cfff4b917871b2102 (git) before fad178ae894930520519ead3c8e0150641466360
affected

8894f4919bc43f821775db2cfff4b917871b2102 (git) before 6bdd2d70c338d52c387d3b3aadc596784ae81b01
affected

8894f4919bc43f821775db2cfff4b917871b2102 (git) before ad8fa5bff53f5d1f8394f996850da8ce070eaee3
affected

8894f4919bc43f821775db2cfff4b917871b2102 (git) before 24639553a016578222ac597db924dfb6fa5ec8b5
affected

8894f4919bc43f821775db2cfff4b917871b2102 (git) before 8f3c6f08ababad2e3bdd239728cf66a9949446b4
affected

Default status
affected

3.16
affected

Any version before 3.16
unaffected

5.10.253 (semver)
unaffected

5.15.203 (semver)
unaffected

6.1.167 (semver)
unaffected

6.6.130 (semver)
unaffected

6.12.78 (semver)
unaffected

6.18.19 (semver)
unaffected

6.19.9 (semver)
unaffected

7.0 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/178df7c91e6c202579284df9f79d1592a514cdcf

git.kernel.org/...c/4df518aa196085909fd7e32518ecd27fba60ed69

git.kernel.org/...c/cd24cab2023aa46b595bc6b9cc39d8973d9d0a8c

git.kernel.org/...c/fad178ae894930520519ead3c8e0150641466360

git.kernel.org/...c/6bdd2d70c338d52c387d3b3aadc596784ae81b01

git.kernel.org/...c/ad8fa5bff53f5d1f8394f996850da8ce070eaee3

git.kernel.org/...c/24639553a016578222ac597db924dfb6fa5ec8b5

git.kernel.org/...c/8f3c6f08ababad2e3bdd239728cf66a9949446b4

cve.org (CVE-2026-43381)

nvd.nist.gov (CVE-2026-43381)

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