Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu-v3-iommufd: Require exactly one Stream ID for a vDEVICE arm_vsmmu_vsid_to_sid() maps a guest's vSID to a single physical Stream ID taken from master->streams[0], assuming a device has exactly one stream. A device with several streams gets only its first one mapped, so a guest vSID invalidation cannot reach the others' ATC and IOTLB entries; a device with none makes master->streams a ZERO_SIZE_PTR, read out of bounds. Add an arm_vsmmu_vdevice_init() op to reject the vDEVICE with -EOPNOTSUPP when master->num_streams is not one, rather than mapping it silently.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d68beb276ba26cec47350a6d468e967673ee0c56 before 3808bab5d95ae79e333e11f6a73d178e084c645d; affected d68beb276ba26cec47350a6d468e967673ee0c56 before 0acbc621341aca4eb94d9c2f43e1ab273ff088f0; affected d68beb276ba26cec47350a6d468e967673ee0c56 before c3b8ee84a965058b41275069d4696f37a8b14bf6 |
| Linux / Linux | affected 6.13; unaffected 0 before 6.13; unaffected 6.18.44 through 6.18.*; unaffected 7.1.8 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/3808bab5d95ae79e333e11f6a73d178e084c645d
- https://git.kernel.org/stable/c/0acbc621341aca4eb94d9c2f43e1ab273ff088f0
- https://git.kernel.org/stable/c/c3b8ee84a965058b41275069d4696f37a8b14bf6
ADP enrichment
No English description supplied.
No references supplied.