CVE-2026-74573
- Source
- https://cve.org/CVERecord?id=CVE-2026-74573
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74573.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-74573
- Downstream
- Published
- 2026-08-15T12:28:11.935Z
- Modified
- 2026-08-17T03:54:57.638541788Z
- Summary
- iommu/arm-smmu-v3-iommufd: Require exactly one Stream ID for a vDEVICE
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
iommu/arm-smmu-v3-iommufd: Require exactly one Stream ID for a vDEVICE
armvsmmuvsidtosid() 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 ZEROSIZEPTR, read out of bounds.
Add an armvsmmuvdeviceinit() op to reject the vDEVICE with -EOPNOTSUPP when master->numstreams is not one, rather than mapping it silently.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74573.json", "cna_assigner": "Linux" }- References
-
- https://git.kernel.org/stable/c/0acbc621341aca4eb94d9c2f43e1ab273ff088f0
- https://git.kernel.org/stable/c/3808bab5d95ae79e333e11f6a73d178e084c645d
- https://git.kernel.org/stable/c/c3b8ee84a965058b41275069d4696f37a8b14bf6
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74573.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-74573
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git