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SUSE: QEMU Important Denial of Service & Buffer Overflow 2026:20008-1

suse
Calendar Grey January 9, 2026
Dist Suse Esm H88
Security update for qemu addresses critical issues affecting SUSE Linux. Essential installs are recommended for system integrity.
An update that solves two vulnerabilities and has two fixes can now be installed.

Summary

## This update for qemu fixes the following issues: Security issues fixed: * CVE-2025-12464: stack-based buffer overflow in the e1000 network device operations can be exploited by a malicious guest user to crash the QEMU process on the host (bsc#1253002). * CVE-2025-11234: use-after-free in WebSocket handshake operations can be exploited by a malicious client with network access to the VNC WebSocket port to cause a denial-of-service (bsc#1250984). Other updates and bugfixes: * [openSUSE][RPM]: really fix *-virtio-gpu-pci dependency on ARM (bsc#1254286). * block/curl: fix curl internal handles handling (bsc#1252768). ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow SuSE important QEMU

References

* bsc#1250984

* bsc#1252768

* bsc#1253002

* bsc#1254286

Cross-

* CVE-2025-11234

* CVE-2025-12464

CVSS scores:

* CVE-2025-11234 ( SUSE ): 8.7

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

* CVE-2025-11234 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

* CVE-2025-11234 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

* CVE-2025-12464 ( SUSE ): 6.9

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

* CVE-2025-12464 ( SUSE ): 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

* CVE-2025-12464 ( NVD ): 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products:

* SUSE Linux Micro 6.1

An update that solves two vulnerabilities and has two fixes can now be

installed.

##

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:20008-1
Release Date: 2025-12-22T15:48:07Z
Rating: important

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow SuSE important QEMU

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