CVE-2026-43381
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.
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
8- git.kernel.org/stable/c/178df7c91e6c202579284df9f79d1592a514cdcfnvd
- git.kernel.org/stable/c/24639553a016578222ac597db924dfb6fa5ec8b5nvd
- git.kernel.org/stable/c/4df518aa196085909fd7e32518ecd27fba60ed69nvd
- git.kernel.org/stable/c/6bdd2d70c338d52c387d3b3aadc596784ae81b01nvd
- git.kernel.org/stable/c/8f3c6f08ababad2e3bdd239728cf66a9949446b4nvd
- git.kernel.org/stable/c/ad8fa5bff53f5d1f8394f996850da8ce070eaee3nvd
- git.kernel.org/stable/c/cd24cab2023aa46b595bc6b9cc39d8973d9d0a8cnvd
- git.kernel.org/stable/c/fad178ae894930520519ead3c8e0150641466360nvd
News mentions
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