kernel-devel-6.16.7-1.1 on GA media SUSE Patch security@suse.de SUSE Security Team openSUSE-SU-2025:15553-1 Final 1 1 2025-09-14T00:00:00Z current 2025-09-14T00:00:00Z 2025-09-14T00:00:00Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z kernel-devel-6.16.7-1.1 on GA media These are all security issues fixed in the kernel-devel-6.16.7-1.1 package on the GA media of openSUSE Tumbleweed. The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). openSUSE-Tumbleweed-2025-15553 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/security/rating/ SUSE Security Ratings https://www.suse.com/security/cve/CVE-2025-40300/ SUSE CVE CVE-2025-40300 page openSUSE Tumbleweed kernel-devel-6.16.7-1.1 kernel-macros-6.16.7-1.1 kernel-source-6.16.7-1.1 kernel-source-vanilla-6.16.7-1.1 kernel-devel-6.16.7-1.1 as a component of openSUSE Tumbleweed kernel-macros-6.16.7-1.1 as a component of openSUSE Tumbleweed kernel-source-6.16.7-1.1 as a component of openSUSE Tumbleweed kernel-source-vanilla-6.16.7-1.1 as a component of openSUSE Tumbleweed In the Linux kernel, the following vulnerability has been resolved: x86/vmscape: Add conditional IBPB mitigation VMSCAPE is a vulnerability that exploits insufficient branch predictor isolation between a guest and a userspace hypervisor (like QEMU). Existing mitigations already protect kernel/KVM from a malicious guest. Userspace can additionally be protected by flushing the branch predictors after a VMexit. Since it is the userspace that consumes the poisoned branch predictors, conditionally issue an IBPB after a VMexit and before returning to userspace. Workloads that frequently switch between hypervisor and userspace will incur the most overhead from the new IBPB. This new IBPB is not integrated with the existing IBPB sites. For instance, a task can use the existing speculation control prctl() to get an IBPB at context switch time. With this implementation, the IBPB is doubled up: one at context switch and another before running userspace. The intent is to integrate and optimize these cases post-embargo. [ dhansen: elaborate on suboptimal IBPB solution ] CVE-2025-40300 openSUSE Tumbleweed:kernel-devel-6.16.7-1.1 openSUSE Tumbleweed:kernel-macros-6.16.7-1.1 openSUSE Tumbleweed:kernel-source-6.16.7-1.1 openSUSE Tumbleweed:kernel-source-vanilla-6.16.7-1.1 moderate To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/security/cve/CVE-2025-40300.html CVE-2025-40300 https://bugzilla.suse.com/1249561 SUSE Bug 1249561