CVE-2026-98928 KVM: arm64: Derive GUEST_HAS_SVE from the SVE feature bit at EL2

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Derive GUESTHASSVE from the SVE feature bit at EL2 pkvminitfeaturesfromhost takes KVMARCHFLAGGUESTHASSVE and KVMARMVCPUSVE from the host separately, but pkvmvcpuinitsve tests the bit while vcpuhassve reads the flag. A...

CVE-2026-98928 KVM: arm64: Derive GUEST_HAS_SVE from the SVE feature bit at EL2

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Derive GUESTHASSVE from the SVE feature bit at EL2 pkvminitfeaturesfromhost takes KVMARCHFLAGGUESTHASSVE and KVMARMVCPUSVE from the host separately, but pkvmvcpuinitsve tests the bit while vcpuhassve reads the flag. A...

CVE-2026-98928

The Linux kernel contains a vulnerability in the KVM subsystem for the arm64 architecture. The root cause lies in pkvm_init_features_from_host(), which independently handles KVM_ARCH_FLAG_GUEST_HAS_SVE and KVM_ARM_VCPU_SVE. Because pkvm_vcpu_init_sve() tests the bit while vcpu_has_sve() reads the...

Linux Distros Unpatched Vulnerability : CVE-2026-98638

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Validate the SVE vector length in pkvmvcpuinitsve pkvmvcpuinitsve clamps only th...

Linux Distros Unpatched Vulnerability : CVE-2026-98637

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Do not clear VM-wide SVE feature on vCPU init failure pkvmvcpuinitsve clears...

DEBIAN-CVE-2026-98637

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Do not clear VM-wide SVE feature on vCPU init failure pkvmvcpuinitsve clears KVMARMVCPUSVE in kvm-arch.vcpufeatures when it fails, but vcpuhassve tests KVMARCHFLAGGUESTHASSVE, which is left set. Later vCPUs on that VM...

DEBIAN-CVE-2026-98638

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Validate the SVE vector length in pkvmvcpuinitsve pkvmvcpuinitsve clamps only the upper bound of the host-provided svemaxvl, so an invalid vector length reaches svestatesizefromvl and the WARNON there, which is fatal ...

CVE-2026-98638

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Validate the SVE vector length in pkvmvcpuinitsve pkvmvcpuinitsve clamps only the upper bound of the host-provided svemaxvl, so an invalid vector length reaches svestatesizefromvl and the WARNON there, which is fatal ...

CVE-2026-98638

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Validate the SVE vector length in pkvmvcpuinitsve pkvmvcpuinitsve clamps only the upper bound of the host-provided svemaxvl, so an invalid vector length reaches svestatesizefromvl and the WARNON there, which is fatal ...

UBUNTU-CVE-2026-98637

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Do not clear VM-wide SVE feature on vCPU init failure pkvmvcpuinitsve clears KVMARMVCPUSVE in kvm-arch.vcpufeatures when it fails, but vcpuhassve tests KVMARCHFLAGGUESTHASSVE, which is left set. Later vCPUs on that VM...

UBUNTU-CVE-2026-98638

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Validate the SVE vector length in pkvmvcpuinitsve pkvmvcpuinitsve clamps only the upper bound of the host-provided svemaxvl, so an invalid vector length reaches svestatesizefromvl and the WARNON there, which is fatal ...

CVE-2026-98638

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Validate the SVE vector length in pkvmvcpuinitsve pkvmvcpuinitsve clamps only the upper bound of the host-provided svemaxvl, so an invalid vector length reaches svestatesizefromvl and the WARNON there, which is fatal ...

CVE-2026-98638

The Linux kernel contains a vulnerability in the KVM subsystem on arm64 architecture. Specifically, the function pkvm_vcpu_init_sve() fails to properly validate the host-provided sve_max_vl, clamping only the upper bound. This allows an invalid vector length to reach sve_state_size_from_vl(), tri...

EUVD-2026-103552

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Validate the SVE vector length in pkvmvcpuinitsve pkvmvcpuinitsve clamps only the upper bound of the host-provided svemaxvl, so an invalid vector length reaches svestatesizefromvl and the WARNON there, which is fatal ...

CVE-2026-98638 KVM: arm64: Validate the SVE vector length in pkvm_vcpu_init_sve()

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Validate the SVE vector length in pkvmvcpuinitsve pkvmvcpuinitsve clamps only the upper bound of the host-provided svemaxvl, so an invalid vector length reaches svestatesizefromvl and the WARNON there, which is fatal ...

CVE-2026-98638 KVM: arm64: Validate the SVE vector length in pkvm_vcpu_init_sve()

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Validate the SVE vector length in pkvmvcpuinitsve pkvmvcpuinitsve clamps only the upper bound of the host-provided svemaxvl, so an invalid vector length reaches svestatesizefromvl and the WARNON there, which is fatal ...

CVE-2026-98637: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Do not clear VM-wide SVE feature on vCPU init failure pkvmvcpuinitsve clears KVMARMVCPUSVE in kvm-arch.vcpufeatures when it fails, but vcpuhassve tests KVMARCHFLAGGUESTHASSVE, which is left set. Later vCPUs on that VM...

CVE-2026-98638: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Validate the SVE vector length in pkvmvcpuinitsve pkvmvcpuinitsve clamps only the upper bound of the host-provided svemaxvl, so an invalid vector length reaches svestatesizefromvl and the WARNON there, which is fatal ...

Linux Kernel Security Vulnerabilities

The Linux kernel version 6.16 contains a security vulnerability. This vulnerability arises from the fact that the function pkvmvcpuinitsve only limits the upper bound of svemaxvl provided by the host. It does not verify the length of SVE vectors before deriving the state size. As a result, an...