Description
A stack-based buffer overflow was found in the QEMU e1000 network device. The code for padding short frames was dropped from individual network devices and moved to the net core code. The issue stems from the device's receive code still being able to process a short frame in loopback mode. This could lead to a buffer overrun in the e1000_receive_iov() function via the loopback code path. A malicious guest user could use this vulnerability to crash the QEMU process on the host, resulting in a denial of service.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | qemu | 8.1.0 – < 10.1.3 | 10.1.3 |
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — |
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 | 1:10.1.3+ds-1 | — |
| Debian 13 | qemu | 1:10.0.7+ds-0+deb13u1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | qemu | 1:10.1.0+ds-5ubuntu2.4 | USN-8073-1 |
| Ubuntu 24.04 LTS | qemu | 1:8.2.2+ds-0ubuntu1.13 | USN-8073-1 |
| Ubuntu 22.04 LTS | qemu | 1:6.2+dfsg-2ubuntu6.28 | USN-8073-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | qemu | 7.1.0-150500.49.36.2 | SUSE-SU-2026:0288-1, SUSE-SU-2026:0039-1 |
| SLES 15 SP7 | qemu-linux-user | 9.2.4-150700.3.11.1 | SUSE-SU-2026:0288-1 |
| SLES 15 SP6 | qemu | 8.2.10-150600.3.43.1 | SUSE-SU-2026:0022-1 |
| SLES 15 SP5 | qemu | 7.1.0-150500.49.36.2 | SUSE-SU-2026:0039-1 |
| SLES 15 SP4 | qemu | 6.2.0-150400.37.46.1 | SUSE-SU-2026:0043-1 |
Show 15 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | qemu +1 | 10.0.7-160000.1.1 | SUSE-SU-2025:21233-1 |
| SLES for SAP 15 SP6 | qemu | 8.2.10-150600.3.43.1 | SUSE-SU-2026:0022-1 |
| SLES for SAP 15 SP5 | qemu | 7.1.0-150500.49.36.2 | SUSE-SU-2026:0039-1 |
| SLES for SAP 15 SP4 | qemu | 6.2.0-150400.37.46.1 | SUSE-SU-2026:0043-1 |
| SLES 16.0 | qemu +1 | 10.0.7-160000.1.1 | SUSE-SU-2025:21233-1 |
| SLE Micro 6.2 | qemu | 10.0.7-160000.1.1 | SUSE-SU-2025:21230-1 |
| SLE Micro 6.1 | qemu | 8.2.10-slfo.1.1_3.1 | SUSE-SU-2026:20008-1 |
| SLE Micro 6.0 | qemu | 8.2.10-1.1 | SUSE-SU-2026:20038-1 |
| SLE Micro 5.5 | qemu | 7.1.0-150500.49.36.2 | SUSE-SU-2026:0039-1 |
| SLE Micro 5.4 | qemu | 6.2.0-150400.37.46.1 | SUSE-SU-2026:0043-1 |
| SLE Micro 5.3 | qemu | 6.2.0-150400.37.46.1 | SUSE-SU-2026:0043-1 |
| SLE HPC 15 SP5 | qemu | 7.1.0-150500.49.36.2 | SUSE-SU-2026:0039-1 |
| SLE HPC 15 SP4 | qemu | 6.2.0-150400.37.46.1 | SUSE-SU-2026:0043-1 |
| SUSE Manager Server LTS 4.3 | qemu | 6.2.0-150400.37.46.1 | SUSE-SU-2026:0043-1 |
| SUSE Manager Proxy LTS 4.3 | qemu | 6.2.0-150400.37.46.1 | SUSE-SU-2026:0043-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | qemu | 10.1.3-1.1 | openSUSE-SU-2025:15821-1 |
| openSUSE Leap 16.0 | qemu +1 | 10.0.7-160000.1.1 | openSUSE-SU-2025:20171-1 |
| openSUSE Leap 15.6 | qemu +1 | 8.2.10-150600.3.43.1 | SUSE-SU-2026:0022-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | qemu | 8.2.0-25 | — |
Advisories 12
- USN-8073-1 qemu vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- openSUSE-SU-2025:20171-1 Security update for qemu SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15821-1 qemu-10.1.3-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20038-1 Security update for qemu SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:20008-1 Security update for qemu SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0288-1 Security update for qemu SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0039-1 Security update for qemu SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0022-1 Security update for qemu SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:21233-1 Security update for qemu SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:21230-1 Security update for qemu SUSE / openSUSE Security Updates · Mar 23, 2026
- WID-SEC-2025-2466 QEMU e1000 Network Devices: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Mar 4, 2026
- SUSE-SU-2026:0043-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026