An information disclosure vulnerability was found in the virtio vhost-user GPU device (vhost-user-gpu) of QEMU in versions up to and including 6.0. The flaw exists in virgl_cmd_get_capset_info() in contrib/vhost-user-gpu/virgl.c and could occur due to the read of uninitialized memory. A malicious guest could exploit this issue to leak memory from the host.
Weakness
The product uses or accesses a resource that has not been initialized.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Qemu | Qemu | * | 6.0.0 (including) |
| Qemu | Ubuntu | devel | * |
| Qemu | Ubuntu | esm-infra/focal | * |
| Qemu | Ubuntu | focal | * |
| Qemu | Ubuntu | groovy | * |
| Qemu | Ubuntu | hirsute | * |
| Qemu | Ubuntu | impish | * |
| Qemu | Ubuntu | jammy | * |
| Qemu | Ubuntu | trusty | * |
| Qemu | Ubuntu | xenial | * |
| Qemu-kvm | Ubuntu | precise/esm | * |
Potential Mitigations
References
- http://www.openwall.com/lists/oss-security/2021/05/31/1
- https://bugzilla.redhat.com/show_bug.cgi?id=1958955
- https://security.gentoo.org/glsa/202208-27
- https://security.netapp.com/advisory/ntap-20210720-0008/
- https://www.debian.org/security/2021/dsa-4980
- http://www.openwall.com/lists/oss-security/2021/05/31/1
- https://bugzilla.redhat.com/show_bug.cgi?id=1958955
- https://security.gentoo.org/glsa/202208-27
- https://security.netapp.com/advisory/ntap-20210720-0008/
- https://www.debian.org/security/2021/dsa-4980