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

🗓️ 13 Sep 2022 09:49:59Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 6 Views

Set the base guest FPU uABI size to struct kvm_xsave to prevent out of bounds writes on hosts without XSAVE.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.6aarch64bpftool4.18.0-372.26.1.el8_6bpftool-4.18.0-372.26.1.el8_6.aarch64.rpm
Red Hat Enterprise Linux8.6ppc64lebpftool4.18.0-372.26.1.el8_6bpftool-4.18.0-372.26.1.el8_6.ppc64le.rpm
Red Hat Enterprise Linux8.6s390xbpftool4.18.0-372.26.1.el8_6bpftool-4.18.0-372.26.1.el8_6.s390x.rpm
Red Hat Enterprise Linux8.6x86_64bpftool4.18.0-372.26.1.el8_6bpftool-4.18.0-372.26.1.el8_6.x86_64.rpm
Red Hat Enterprise Linux8.6aarch64bpftool-debuginfo4.18.0-372.26.1.el8_6bpftool-debuginfo-4.18.0-372.26.1.el8_6.aarch64.rpm
Red Hat Enterprise Linux8.6ppc64lebpftool-debuginfo4.18.0-372.26.1.el8_6bpftool-debuginfo-4.18.0-372.26.1.el8_6.ppc64le.rpm
Red Hat Enterprise Linux8.6s390xbpftool-debuginfo4.18.0-372.26.1.el8_6bpftool-debuginfo-4.18.0-372.26.1.el8_6.s390x.rpm
Red Hat Enterprise Linux8.6x86_64bpftool-debuginfo4.18.0-372.26.1.el8_6bpftool-debuginfo-4.18.0-372.26.1.el8_6.x86_64.rpm
Red Hat Enterprise Linux8.6aarch64kernel4.18.0-372.26.1.el8_6kernel-4.18.0-372.26.1.el8_6.aarch64.rpm
Red Hat Enterprise Linux8.6ppc64lekernel4.18.0-372.26.1.el8_6kernel-4.18.0-372.26.1.el8_6.ppc64le.rpm
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29 Jun 2026 21:11Current
6Medium risk
Vulners AI Score6
CVSS 3.15.5
EPSS0.00249
6