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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux | < 6.8.0-40.40 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-aws | < 6.8.0-1013.14 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws-5.15 | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 24.04 | noarch | linux-azure | < any | UNKNOWN |
git.kernel.org/linus/c8fae27d141a32a1624d0d0d5419d94252824498 (6.10-rc1)
git.kernel.org/stable/c/5e2024b0b9b3d5709e3f7e9b92951d7e29154106
git.kernel.org/stable/c/c8fae27d141a32a1624d0d0d5419d94252824498
launchpad.net/bugs/cve/CVE-2024-42134
nvd.nist.gov/vuln/detail/CVE-2024-42134
security-tracker.debian.org/tracker/CVE-2024-42134
ubuntu.com/security/notices/USN-6949-1
ubuntu.com/security/notices/USN-6952-1
www.cve.org/CVERecord?id=CVE-2024-42134