Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | QEMU | All QEMU versions up to and including 6.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | qemu | 1:6.1+dfsg-1 | — |
| Debian 13 | qemu | 1:6.1+dfsg-1 | — |
| Debian 12 | qemu | 1:6.1+dfsg-1 | — |
| Debian 11 | qemu | 1:5.2+dfsg-11+deb11u1 | DSA-4980-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | qemu | 1:6.2+dfsg-2ubuntu5 | — |
| Ubuntu 20.04 LTS | qemu | 1:4.2-3ubuntu6.17 | USN-5307-1, USN-5010-1 |
| Ubuntu 18.04 LTS | qemu | 1:2.11+dfsg-1ubuntu7.37 | USN-5307-1, USN-5010-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | qemu | 5.2.0-20.1 | SUSE-SU-2021:2213-1 |
| SLES 15 SP2 | qemu | 4.2.1-11.22.1 | SUSE-SU-2021:2212-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 5.0 | qemu | 4.2.1-11.22.1 | SUSE-SU-2021:2212-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | qemu | 6.1.0-32.1 | openSUSE-SU-2024:11287-1 |
| openSUSE Leap 15.3 | qemu | 5.2.0-20.1 | openSUSE-SU-2021:2213-1 |
| openSUSE Leap 15.2 | qemu | 4.2.1-lp152.9.16.2 | openSUSE-SU-2021:1043-1 |
| openSUSE Leap 15.2 | qemu-linux-user | 4.2.1-lp152.9.16.1 | openSUSE-SU-2021:1043-1 |
| openSUSE Leap 15.2 | qemu-testsuite | 4.2.1-lp152.9.16.7 | openSUSE-SU-2021:1043-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | qemu | 6.1.0-r0 | — |
| Alpine v3.23 | qemu | 6.1.0-r0 | — |
| Alpine v3.22 | qemu | 6.1.0-r0 | — |
| Alpine v3.21 | qemu | 6.1.0-r0 | — |
| Alpine v3.20 | qemu | 6.1.0-r0 | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | qemu | 6.1.0-r0 | — |
| Alpine v3.18 | qemu | 6.1.0-r0 | — |
| Alpine v3.17 | qemu | 6.1.0-r0 | — |
| Alpine v3.16 | qemu | 6.1.0-r0 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | hivex +4 | 1.3.18-20.module+el8.4.0+20319+6eb4347c | ELSA-2021-9568 |
| Oracle Linux 8 | libguestfs-winsupport | 8.2-1.module+el8.4.0+20319+6eb4347c | ELSA-2021-9568 |
| Oracle Linux 8 | libiscsi +2 | 1.18.0-8.module+el8.4.0+20319+6eb4347c | ELSA-2021-9568 |
| Oracle Linux 8 | libnbd +3 | 1.2.2-1.module+el8.4.0+20319+6eb4347c | ELSA-2021-9568 |
| Oracle Linux 8 | libvirt +29 | 5.7.0-31.module+el8.4.0+20319+6eb4347c | ELSA-2021-9568 |
| Oracle Linux 8 | libvirt-dbus | 1.3.0-2.module+el8.4.0+20319+6eb4347c | ELSA-2021-9568 |
| Oracle Linux 8 | nbdkit +13 | 1.16.2-4.0.1.module+el8.4.0+20319+6eb4347c | ELSA-2021-9568 |
| Oracle Linux 8 | netcf +2 | 0.2.8-12.module+el8.4.0+20319+6eb4347c | ELSA-2021-9568 |
| Oracle Linux 8 | perl-Sys-Virt | 4.5.0-5.module+el8.4.0+20319+6eb4347c | ELSA-2021-9568 |
| Oracle Linux 8 | qemu-img +9 | 15:4.2.1-11.module+el8.4.0+20319+6eb4347c | ELSA-2021-9568 |
| Oracle Linux 8 | seabios +2 | 1.13.0-2.module+el8.4.0+20319+6eb4347c | ELSA-2021-9568 |
| Oracle Linux 8 | sgabios +1 | 1:0.20170427git-3.module+el8.4.0+20319+6eb4347c | ELSA-2021-9568 |
| Oracle Linux 8 | supermin +1 | 5.1.19-10.module+el8.4.0+20319+6eb4347c | ELSA-2021-9568 |
| Oracle Linux 8 | virt-dib +23 | 1:1.40.2-25.0.1.module+el8.4.0+20319+6eb4347c | ELSA-2021-9568 |
| Oracle Linux 7 | qemu +12 | 15:4.2.1-11.el7 | ELSA-2021-9425 |
Advisories 11
- USN-5307-1 qemu vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- USN-5010-1 qemu vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DSA-4980-1 qemu - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2021:2213-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2213-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:1043-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2212-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11287-1 qemu-6.1.0-32.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- WID-SEC-2022-1110 QEMU: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 2, 2024
- ELSA-2021-9568 Important: virt:kvm_utils security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Dec 1, 2021
- ELSA-2021-9425 Important: qemu security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 17, 2021
References
- [oss-security] 20210531 QEMU: security issues in vhost-user-gpu mailing-list
- https://bugzilla.redhat.com/show_bug.cgi?id=1958955
- https://security.netapp.com/advisory/ntap-20210720-0008/
- DSA-4980 vendor-advisory
- GLSA-202208-27 vendor-advisory