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Vulnerability CVE-2024-42134
Published: 2024-07-30
| Description: |
In the Linux kernel, the following vulnerability has been resolved:
virtio-pci: Check if is_avq is NULL
[bug]
In the virtio_pci_common.c function vp_del_vqs, vp_dev->is_avq is involved
to determine whether it is admin virtqueue, but this function vp_dev->is_avq
may be empty. For installations, virtio_pci_legacy does not assign a value
to vp_dev->is_avq.
[fix]
Check whether it is vp_dev->is_avq before use.
[test]
Test with virsh Attach device
Before this patch, the following command would crash the guest system
After applying the patch, everything seems to be working fine. |
References: |
https://git.kernel.org/stable/c/5e2024b0b9b3d5709e3f7e9b92951d7e29154106
https://git.kernel.org/stable/c/c8fae27d141a32a1624d0d0d5419d94252824498
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