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kernel: x86/fpu: KVM: Set the base guest FPU uABI size to sizeof(struct kvm_xsave)

🗓️ 15 Nov 2022 11:55:31Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 4 Views

Set the base guest FPU user ABI size to sizeof(struct kvm_xsave) to avoid out-of-bounds writes on hosts without XSAVE.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.1aarch64bpftool5.14.0-162.6.1.el9_1bpftool-5.14.0-162.6.1.el9_1.aarch64.rpm
Red Hat Enterprise Linux9.1ppc64lebpftool5.14.0-162.6.1.el9_1bpftool-5.14.0-162.6.1.el9_1.ppc64le.rpm
Red Hat Enterprise Linux9.1s390xbpftool5.14.0-162.6.1.el9_1bpftool-5.14.0-162.6.1.el9_1.s390x.rpm
Red Hat Enterprise Linux9.1x86_64bpftool5.14.0-162.6.1.el9_1bpftool-5.14.0-162.6.1.el9_1.x86_64.rpm
Red Hat Enterprise Linux9.1aarch64bpftool-debuginfo5.14.0-162.6.1.el9_1bpftool-debuginfo-5.14.0-162.6.1.el9_1.aarch64.rpm
Red Hat Enterprise Linux9.1ppc64lebpftool-debuginfo5.14.0-162.6.1.el9_1bpftool-debuginfo-5.14.0-162.6.1.el9_1.ppc64le.rpm
Red Hat Enterprise Linux9.1s390xbpftool-debuginfo5.14.0-162.6.1.el9_1bpftool-debuginfo-5.14.0-162.6.1.el9_1.s390x.rpm
Red Hat Enterprise Linux9.1x86_64bpftool-debuginfo5.14.0-162.6.1.el9_1bpftool-debuginfo-5.14.0-162.6.1.el9_1.x86_64.rpm
Red Hat Enterprise Linux9.1aarch64kernel5.14.0-162.6.1.el9_1kernel-5.14.0-162.6.1.el9_1.aarch64.rpm
Red Hat Enterprise Linux9.1ppc64lekernel5.14.0-162.6.1.el9_1kernel-5.14.0-162.6.1.el9_1.ppc64le.rpm
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21 Jul 2026 20:54Current
6Medium risk
Vulners AI Score6
CVSS 3.15.5
EPSS0.0026
4