Description
A NULL pointer dereference flaw was found in the am53c974 SCSI host bus adapter emulation of QEMU in versions before 6.0.0. This issue occurs while handling the 'Information Transfer' command. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | QEMU | qemu 6.0.0 | — |
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 | 1:6.0+dfsg-3 | — |
| Debian 13 | qemu | 1:6.0+dfsg-3 | — |
| Debian 12 | qemu | 1:6.0+dfsg-3 | — |
| Debian 10 | qemu | 1:3.1+dfsg-8+deb10u9 | DLA-3099-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | qemu | 1:4.2-3ubuntu6.17 | USN-5010-1 |
| Ubuntu 18.04 LTS | qemu | 1:2.11+dfsg-1ubuntu7.37 | USN-5010-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 16.04 LTS | qemu | 1:2.5+dfsg-5ubuntu10.51+esm4 | — |
| Ubuntu Pro 14.04 LTS | qemu | 2.0.0+dfsg-2ubuntu1.47+esm6 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | qemu | 5.2.0-103.2 | SUSE-SU-2021:2858-1 |
| SLES 15 SP2 | qemu | 4.2.1-11.28.1 | SUSE-SU-2021:2789-1 |
| 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 | 3.1.1.1-57.2 | SUSE-SU-2021:2813-1 |
Show 12 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 SP2 | qemu | 2.6.2-41.73.1 | SUSE-SU-2021:3575-1 |
| 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 | 3.1.1.1-57.2 | SUSE-SU-2021:2813-1 |
| SLES for SAP 12 SP4 | qemu | 2.11.2-5.40.2 | SUSE-SU-2021:3635-1 |
| SLE Micro 5.0 | qemu | 4.2.1-11.28.1 | SUSE-SU-2021:2789-1 |
| 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 9 | qemu | 2.11.2-5.40.2 | SUSE-SU-2021:3635-1 |
| 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 Leap 15.3 | qemu | 3.1.1.1-80.40.1 | openSUSE-SU-2021:3614-1, openSUSE-SU-2021:2858-1, openSUSE-SU-2021:2789-1 |
| openSUSE Leap 15.2 | qemu +2 | 4.2.1-lp152.9.20.1 | openSUSE-SU-2021:1202-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | qemu | 6.0.0-r2 | — |
| Alpine v3.23 | qemu | 6.0.0-r2 | — |
| Alpine v3.22 | qemu | 6.0.0-r2 | — |
| Alpine v3.21 | qemu | 6.0.0-r2 | — |
| Alpine v3.20 | qemu | 6.0.0-r2 | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | qemu | 6.0.0-r2 | — |
| Alpine v3.18 | qemu | 6.0.0-r2 | — |
| Alpine v3.17 | qemu | 6.0.0-r2 | — |
| Alpine v3.16 | qemu | 6.0.0-r2 | — |
Advisories 14
- WID-SEC-2022-1106 QEMU: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 29, 2026
- USN-5010-1 qemu vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DLA-3099-1 qemu - security update Debian Security (DSA / DLA) · Mar 9, 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-2021:3614-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3575-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:2789-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2789-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:1202-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:2858-1 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
- SUSE-SU-2021:2858-1 Security update for qemu SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2021:2813-1 Security update for qemu SUSE / openSUSE Security Updates · May 2, 2025
References
- [oss-security] 20210416 QEMU: ESP security fixes mailing-list
- https://www.openwall.com/lists/oss-security/2021/04/16/3
- https://bugzilla.redhat.com/show_bug.cgi?id=1909769
- https://security.netapp.com/advisory/ntap-20210713-0006/
- GLSA-202208-27 vendor-advisory
- [debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security update mailing-list