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SUSE: QEMU Important Security Update Due to Buffer Overflows 2026:0043

SUSE: QEMU Important Security Update Due to Buffer Overflows 2026:0043

Linuxsecurity •LinuxSecurity Advisories • January 7, 2026

## This update for qemu fixes the following issues: Security issues fixed: * CVE-2023-1544: out-of-bounds read in VMWare's paravirtual RDMA device operations can be exploited through a malicious guest driver to crash the QEMU process on the host (bsc#1209554). * CVE-2024-6505: heap-based buffer overflow in the virtio-net device operations can be exploited by a malicious privileged user to crash the QEMU process on the host (bsc#1227397). * 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). Other updates and bugfixes: * [openSUSE][RPM] spec: require qemu-hw-display-virtio-gpu-pci for x86 too. * [openSUSE][RPM} spec: delete old specfile constructs. Read the Full Advisory

## This update for qemu fixes the following issues: Security issues fixed: * CVE-2023-1544: out-of-bounds read in VMWare's paravirtual RDMA device operations can be exploited through a malicious guest driver to crash the QEMU process on the host (bsc#1209554). * CVE-2024-6505: heap-based buffer overflow in the virtio-net device operations can be exploited by a malicious privileged user to crash the QEMU process on the host (bsc#1227397). * 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). Other updates and bugfixes: * [openSUSE][RPM] spec: require qemu-hw-display-virtio-gpu-pci for x86 too. * [openSUSE][RPM} spec: delete old specfile constructs. Read the Full Advisory

* bsc#1209554 * bsc#1227397 * bsc#1252768 * bsc#1253002 * bsc#1254286 Cross- * CVE-2023-1544 * CVE-2024-6505 * CVE-2025-12464 CVSS scores: * CVE-2023-1544 ( SUSE ): 7.9 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:H * CVE-2023-1544 ( NVD ): 6.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H * CVE-2023-1544 ( NVD ): 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H * CVE-2024-6505 ( SUSE ): 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H * CVE-2024-6505 ( NVD ): 6.8 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H * CVE-2024-6505 ( NVD ): 6.8 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/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 Read the Full Advisory

* CVE-2023-1544 ( SUSE ): 7.9 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:H

* CVE-2023-1544 ( NVD ): 6.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H

* CVE-2023-1544 ( NVD ): 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

* CVE-2024-6505 ( SUSE ): 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

* CVE-2024-6505 ( NVD ): 6.8 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

* CVE-2024-6505 ( NVD ): 6.8 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/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

Read the Full Advisory

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