nouveau/dpcd: return EBUSY for aux xfer if the device is asleep
Summary
| CVE | CVE-2026-43381 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-08 15:16:49 UTC |
| Updated | 2026-05-12 14:10:27 UTC |
| 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. |
Risk And Classification
EPSS: 0.000240000 probability, percentile 0.070210000 (date 2026-05-11)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 8894f4919bc43f821775db2cfff4b917871b2102 178df7c91e6c202579284df9f79d1592a514cdcf git | Not specified |
| CNA | Linux | Linux | affected 8894f4919bc43f821775db2cfff4b917871b2102 4df518aa196085909fd7e32518ecd27fba60ed69 git | Not specified |
| CNA | Linux | Linux | affected 8894f4919bc43f821775db2cfff4b917871b2102 cd24cab2023aa46b595bc6b9cc39d8973d9d0a8c git | Not specified |
| CNA | Linux | Linux | affected 8894f4919bc43f821775db2cfff4b917871b2102 fad178ae894930520519ead3c8e0150641466360 git | Not specified |
| CNA | Linux | Linux | affected 8894f4919bc43f821775db2cfff4b917871b2102 6bdd2d70c338d52c387d3b3aadc596784ae81b01 git | Not specified |
| CNA | Linux | Linux | affected 8894f4919bc43f821775db2cfff4b917871b2102 ad8fa5bff53f5d1f8394f996850da8ce070eaee3 git | Not specified |
| CNA | Linux | Linux | affected 8894f4919bc43f821775db2cfff4b917871b2102 24639553a016578222ac597db924dfb6fa5ec8b5 git | Not specified |
| CNA | Linux | Linux | affected 8894f4919bc43f821775db2cfff4b917871b2102 8f3c6f08ababad2e3bdd239728cf66a9949446b4 git | Not specified |
| CNA | Linux | Linux | affected 3.16 | Not specified |
| CNA | Linux | Linux | unaffected 3.16 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.253 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.203 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.167 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.130 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.78 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.19 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.19.9 6.19.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/8f3c6f08ababad2e3bdd239728cf66a9949446b4 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/4df518aa196085909fd7e32518ecd27fba60ed69 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/cd24cab2023aa46b595bc6b9cc39d8973d9d0a8c | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/178df7c91e6c202579284df9f79d1592a514cdcf | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/6bdd2d70c338d52c387d3b3aadc596784ae81b01 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/fad178ae894930520519ead3c8e0150641466360 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/24639553a016578222ac597db924dfb6fa5ec8b5 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/ad8fa5bff53f5d1f8394f996850da8ce070eaee3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.