linux: In the Linux kernel, the following vulnerability has been resolved: vhost-vdpa: fix vm_flags for virtqueue doorbell...
CVE-2021-46967 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-46967, released February 27, 2024. It is not reported as exploited. Patch Radar priority: Routine.
In the Linux kernel, the following vulnerability has been resolved: vhost-vdpa: fix vm_flags for virtqueue doorbell mapping The virtqueue doorbell is usually implemented via registeres but we don't provide the necessary vma->flags like VM_PFNMAP. This may cause several issues e.g when userspace tries to map the doorbell via vhost IOTLB, kernel may panic due to the page is not backed by page structure. This patch fixes this by setting the necessary vm_flags. With this patch, try to map doorbell via IOTLB will fail with bad address.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 12.15 (bookworm) | 5.10.38-1 | DEBIAN-CVE-2021-46967 | Feb 27, 2024 |
| linux · Debian 13.5 (trixie) | 5.10.38-1 | DEBIAN-CVE-2021-46967 | Feb 27, 2024 |
| linux · Debian 14 | 5.10.38-1 | DEBIAN-CVE-2021-46967 | Feb 27, 2024 |
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