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openSUSE Leap 15.5 Security Update for QEMU Moderate Heap Overflow

suse
Calendar Grey June 12, 2026
Dist Suse Esm H88
Security update addressing heap overflow issues in openSUSE qemu application vulnerabilities, enhancing overall system safety.
An update that solves two vulnerabilities and has one security fix can now be installed.

Summary

## This update for qemu fixes the following issues: Security fixes: * CVE-2026-2243: incorrect bounds check leads to heap out-of-bounds read and a 12-byte information leak when processing specially crafted VMDK files (bsc#1258509). * CVE-2026-3842: hyperv/syndbg: missing mapped-length guard after cpu_physical_memory_map causes host OOB write (bsc#1262089). Other fixes: * [openSUSE] qemu-ga: fix service file against no-autostart (bsc#1199023) ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: * openSUSE Leap 15.5 zypper in -t patch SUSE-2026-2388=1 * SUSE Linux Enterprise Micro 5.5 zypper in -t patch SUSE-SLE-Micro-5.5-2026-2388=1

Topics%20covered

Topics Covered

security advisory moderate DoS heap overflow QEMU OpenSUSE

References

* bsc#1199023

* bsc#1258509

* bsc#1262089

Cross-

* CVE-2026-2243

* CVE-2026-3842

CVSS scores:

* CVE-2026-2243 ( SUSE ): 4.8

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

* CVE-2026-2243 ( SUSE ): 4.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L

* CVE-2026-2243 ( NVD ): 5.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

* CVE-2026-3842 ( SUSE ): 5.1

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

* CVE-2026-3842 ( SUSE ): 5.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Affected Products:

* openSUSE Leap 15.5

* Server Applications Module 15-SP7

* SUSE Linux Enterprise Micro 5.5

* SUSE Linux Enterprise Real Time 15 SP7

* SUSE Linux Enterprise Server 15 SP7

* SUSE Linux Enterprise Server for SAP Applications 15 SP7

Severity
moderate
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2388-1
Release Date: 2026-06-12T13:59:31Z
Rating: moderate

Topics%20covered

Topics Covered

security advisory moderate DoS heap overflow QEMU OpenSUSE

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