CVE-2026-43381
N/A
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 8894f4919bc43f821775db2cfff4b917871b2102 < 178df7c91e6c202579284df9f79d1592a514cdcf | affected |
| Linux | Linux | 8894f4919bc43f821775db2cfff4b917871b2102 < 4df518aa196085909fd7e32518ecd27fba60ed69 | affected |
| Linux | Linux | 8894f4919bc43f821775db2cfff4b917871b2102 < cd24cab2023aa46b595bc6b9cc39d8973d9d0a8c | affected |
| Linux | Linux | 8894f4919bc43f821775db2cfff4b917871b2102 < fad178ae894930520519ead3c8e0150641466360 | affected |
| Linux | Linux | 8894f4919bc43f821775db2cfff4b917871b2102 < 6bdd2d70c338d52c387d3b3aadc596784ae81b01 | affected |
| Linux | Linux | 8894f4919bc43f821775db2cfff4b917871b2102 < ad8fa5bff53f5d1f8394f996850da8ce070eaee3 | affected |
| Linux | Linux | 8894f4919bc43f821775db2cfff4b917871b2102 < 24639553a016578222ac597db924dfb6fa5ec8b5 | affected |
| Linux | Linux | 8894f4919bc43f821775db2cfff4b917871b2102 < 8f3c6f08ababad2e3bdd239728cf66a9949446b4 | affected |
| Linux | Linux | 3.16 | affected |
| Linux | Linux | 0 < 3.16 | unaffected |
| Linux | Linux | 5.10.253 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.203 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.167 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.130 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.78 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.19 <= 6.18.* | unaffected |
| Linux | Linux | 6.19.9 <= 6.19.* | unaffected |
| Linux | Linux | 7.0 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/178df7c91e6c202579284df9f79d1592a514cdcf
- https://git.kernel.org/stable/c/4df518aa196085909fd7e32518ecd27fba60ed69
- https://git.kernel.org/stable/c/cd24cab2023aa46b595bc6b9cc39d8973d9d0a8c
- https://git.kernel.org/stable/c/fad178ae894930520519ead3c8e0150641466360
- https://git.kernel.org/stable/c/6bdd2d70c338d52c387d3b3aadc596784ae81b01
- https://git.kernel.org/stable/c/ad8fa5bff53f5d1f8394f996850da8ce070eaee3
- https://git.kernel.org/stable/c/24639553a016578222ac597db924dfb6fa5ec8b5
- https://git.kernel.org/stable/c/8f3c6f08ababad2e3bdd239728cf66a9949446b4
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