Description
An out-of-bounds write flaw was found in the UAS (USB Attached SCSI) device emulation of QEMU in versions prior to 6.2.0-rc0. The device uses the guest supplied stream number unchecked, which can lead to out-of-bounds access to the UASDevice->data3 and UASDevice->status3 fields. A malicious guest user could use this flaw to crash QEMU or potentially achieve code execution with the privileges of the QEMU process on the host.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | QEMU | qemu 6.2.0-rc0 | — |
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-2 | — |
| Debian 13 | qemu | 1:6.1+dfsg-2 | — |
| Debian 12 | qemu | 1:6.1+dfsg-2 | — |
| Debian 11 | qemu | 1:5.2+dfsg-11+deb11u1 | DSA-4980-1 |
| Debian 10 | qemu | 1:3.1+dfsg-8+deb10u9 | DLA-3099-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 9 | qemu | 1:2.8+dfsg-6+deb9u15 | DLA-2753-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | qemu | 1:6.2+dfsg-2ubuntu5 | — |
| Ubuntu 20.04 LTS | qemu | 1:4.2-3ubuntu6.21 | USN-5307-1 |
| Ubuntu 18.04 LTS | qemu | 1:2.11+dfsg-1ubuntu7.39 | USN-5307-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | qemu | 5.2.0-106.4 | SUSE-SU-2021:3605-1 |
| SLES 15 SP2 | qemu | 4.2.1-11.31.3 | SUSE-SU-2021:3604-1 |
| SLES 15 SP1 | qemu | 3.1.1.1-80.40.1 | SUSE-SU-2021:3614-1 |
| SLES 15 | qemu | 2.11.2-70.59.1 | SUSE-SU-2021:3613-1 |
| SLES 12 SP5 | qemu | 3.1.1.1-60.2 | SUSE-SU-2021:3519-1 |
Show 17 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | qemu | 2.11.2-5.40.2 | SUSE-SU-2021:3635-1 |
| SLES 12 SP3 | qemu | 2.9.1-43.62.1 | SUSE-SU-2021:3653-1 |
| SLES for SAP 15 SP1 | qemu | 3.1.1.1-80.40.1 | SUSE-SU-2021:3614-1 |
| SLES for SAP 15 | qemu | 2.11.2-70.59.1 | SUSE-SU-2021:3613-1 |
| SLES for SAP 12 SP5 | qemu | 3.1.1.1-60.2 | SUSE-SU-2021:3519-1 |
| SLES for SAP 12 SP4 | qemu | 2.11.2-5.40.2 | SUSE-SU-2021:3635-1 |
| SLES for SAP 12 SP3 | qemu | 2.9.1-43.62.1 | SUSE-SU-2021:3653-1 |
| SLE Micro 5.1 | qemu | 5.2.0-106.4 | SUSE-SU-2021:3605-1 |
| SLE Micro 5.0 | qemu | 4.2.1-11.31.3 | SUSE-SU-2021:3604-1 |
| SLE HPC 15 SP1 | qemu | 3.1.1.1-80.40.1 | SUSE-SU-2021:3614-1 |
| SLE HPC 15 | qemu | 2.11.2-70.59.1 | SUSE-SU-2021:3613-1 |
| SUSE OpenStack Cloud Crowbar 9 | qemu | 2.11.2-5.40.2 | SUSE-SU-2021:3635-1 |
| SUSE OpenStack Cloud Crowbar 8 | qemu | 2.9.1-43.62.1 | SUSE-SU-2021:3653-1 |
| SUSE OpenStack Cloud 9 | qemu | 2.11.2-5.40.2 | SUSE-SU-2021:3635-1 |
| SUSE OpenStack Cloud 8 | qemu | 2.9.1-43.62.1 | SUSE-SU-2021:3653-1 |
| SUSE HPE Helion OpenStack 8 | qemu | 2.9.1-43.62.1 | SUSE-SU-2021:3653-1 |
| SUSE Enterprise Storage 6 | qemu | 3.1.1.1-80.40.1 | SUSE-SU-2021:3614-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | qemu | 6.1.0-34.1 | openSUSE-SU-2024:11597-1 |
| openSUSE Leap 15.3 | qemu | 3.1.1.1-80.40.1 | openSUSE-SU-2021:3614-1, openSUSE-SU-2021:3605-1, openSUSE-SU-2021:3604-1 |
| openSUSE Leap 15.3 | qemu-testsuite +1 | 5.2.0-106.3 | openSUSE-SU-2021:3605-1 |
| openSUSE Leap 15.2 | qemu +2 | 4.2.1-lp152.9.23.1 | openSUSE-SU-2021:1461-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.15 | qemu | 6.1.1-r0 | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | qemu | 6.2.0-2 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | hivex +4 | 1.3.18-21.module+el8.5.0+20482+a450964e | ELSA-2022-9172 |
| Oracle Linux 8 | libguestfs-winsupport | 8.2-1.module+el8.5.0+20482+a450964e | ELSA-2022-9172 |
| Oracle Linux 8 | libiscsi +2 | 1.18.0-8.module+el8.5.0+20482+a450964e | ELSA-2022-9172 |
| Oracle Linux 8 | libnbd +3 | 1.2.2-1.module+el8.5.0+20482+a450964e | ELSA-2022-9172 |
| Oracle Linux 8 | libvirt +29 | 5.7.0-32.module+el8.5.0+20482+a450964e | ELSA-2022-9172 |
| Oracle Linux 8 | libvirt-dbus | 1.3.0-2.module+el8.5.0+20482+a450964e | ELSA-2022-9172 |
| Oracle Linux 8 | nbdkit +13 | 1.16.2-4.0.1.module+el8.5.0+20482+a450964e | ELSA-2022-9172 |
| Oracle Linux 8 | netcf +2 | 0.2.8-12.module+el8.5.0+20482+a450964e | ELSA-2022-9172 |
| Oracle Linux 8 | perl-Sys-Virt | 4.5.0-5.module+el8.5.0+20482+a450964e | ELSA-2022-9172 |
| Oracle Linux 8 | qemu-img +9 | 15:4.2.1-15.module+el8.5.0+20482+a450964e | ELSA-2022-9172 |
| Oracle Linux 8 | seabios +2 | 1.13.0-2.module+el8.5.0+20482+a450964e | ELSA-2022-9172 |
| Oracle Linux 8 | sgabios +1 | 1:0.20170427git-3.module+el8.5.0+20482+a450964e | ELSA-2022-9172 |
| Oracle Linux 8 | supermin +1 | 5.1.19-10.module+el8.5.0+20482+a450964e | ELSA-2022-9172 |
| Oracle Linux 8 | virt-dib +23 | 1:1.40.2-28.0.1.module+el8.5.0+20482+a450964e | ELSA-2022-9172 |
| Oracle Linux 7 | qemu +11 | 15:4.2.1-13.el7 | ELSA-2021-9638 |
Advisories 19
- USN-5307-1 qemu vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DSA-4980-1 qemu - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3099-1 qemu - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2753-1 qemu - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2021:3653-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3614-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3613-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11597-1 qemu-6.1.0-34.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:3614-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:3605-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:1461-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3604-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3519-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3635-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:3604-1 Security update for qemu SUSE / openSUSE Security Updates · May 7, 2025
- SUSE-SU-2021:3605-1 Security update for qemu SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2022-1119 QEMU: Schwachstelle ermöglicht Ausführen von beliebigem Programmcode mit Benutzerrechten BSI CERT-Bund (WID) · Sep 2, 2024
- ELSA-2022-9172 Important: virt:kvm_utils security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Feb 25, 2022
- ELSA-2021-9638 Important: qemu security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jan 4, 2022
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1994640
- [debian-lts-announce] 20210902 [SECURITY] [DLA 2753-1] qemu security update mailing-list
- https://security.netapp.com/advisory/ntap-20210923-0006/
- DSA-4980 vendor-advisory
- GLSA-202208-27 vendor-advisory
- [debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security update mailing-list