CVE-2026-89775 KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation Computing the effects of a TLB invalidation involves looking at the size of the mapping cached by the TLB. For S1 mappings such as VNCR, this is deducted from...

CVE-2026-89775 KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation Computing the effects of a TLB invalidation involves looking at the size of the mapping cached by the TLB. For S1 mappings such as VNCR, this is deducted from...

CVE-2026-89775

CVE-2026-89775 affects the Linux kernel in the KVM arm64 subsystem. When the S1 MMU is disabled, the page-table walk level is set to −127 (S1_MMU_DISABLED), but pgshift_level_to_ttl() casts it to an unsigned 8-bit value, yielding an invalidation size of 0 during VNCR TLB evaluation. This can leav...

RLSA-2026:67469 Important: kernel-rt security update

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fixes: kernel: EDAC/bluefield: Fix potential integer overflow CVE-2024-53161 kernel: wifi: mac80211: Discard Beacon frames to non-broadcast addre...

PT-2026-93567

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the KVM s390 architecture within the import wp info function. The len field of the kvm hw breakpoint structure, which is controlled by user space, is assigned to an...

PT-2026-93556

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the KVM arm64 implementation regarding the global VNCR mapping counter. This counter is used to determine if an L1 provided VNCR page is mapped in L0 during TLB...

PT-2026-93555

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the KVM arm64 component where the decode range tlbi function failed to perform the required sign extension for Virtual Address VA during range-based Translation...

CVE-2026-89917: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Handle VNCR TLB invalidation race with vcpuput VNCR unmapping While VNCR TLB invalidation always occurs under the MMU lock, vcpuput doesn't, while it unmaps the VNCR page. The problem is that the invalidation evaluate...

CVE-2026-89907: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Validate MSI data before routing it to EIOINTC pchmsisetirq passes e-msi.data straight into eiointcsetirq as the irq number. The MSI data comes from userspace, that either via a KVMIRQROUTINGMSI entry set with...

PT-2026-93548

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description In the LoongArch architecture, the KVM component fails to validate MSI Message Signaled Interrupts data before routing it to the EIOINTC. The function pch msi set irq passes e-msi.data...

PT-2026-93559

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the KVM arm64 component regarding Translation Lookaside Buffer TLB invalidation by Virtual Address VA. The system compares two ranges—one defined by the TLB and one by...

PT-2026-93551

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the LoongArch KVM implementation where the vector variable is declared on the stack within the dmsintc inject irq function and may be used without being initialized...

CVE-2026-89919: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: keyop: use mmulock to read gmap-asce Every other dat consumer in this file kvms390getskeys, setskeys, getcmmabits, setcmmabits, MEMCLRCMMA, kvms390fixupprefix, kvmtestagegfn, kvmagegfn reads kvm-arch.gmap-asce inside t...

PT-2026-93560

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the KVM s390 component where the keyop function fails to use the mmu lock when reading gmap-asce. Because gmap-asce is modified under a write lock by the gmap set limi...

PT-2026-93562

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description In the KVM s390 component, the kvm inject pfault token function fails to fully initialize the kvm s390 irq structure on the stack. While .type and .u.ext.ext params2 are set, the ext...

PT-2026-93554

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description In the Linux kernel KVM arm64 vgic-v3 component, the vgic v3 save pending tables function iterates through dist-lpi xa using xa for each and dereferences the returned struct vgic irq...

PT-2026-93558

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the KVM arm64 component between VNCR TLB invalidation and the vcpu put function during VNCR page unmapping. The issue arises because TLB invalidation occurs...

PT-2026-93569

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the KVM x86 MMU where the kvm rmap lock function elides the rmap lock when an empty rmap is observed. The kvm rmap age gfn range function ignores the returned value an...

PT-2026-93572

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the KVM nVMX component where the KVM REQ GET NESTED STATE PAGES flag is not consistently cleared during a nested VM-Exit emulation. This occurs even when KVM is built...

PT-2026-93681

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the KVM SEV implementation where the SNP VMSA Virtual Machine Save Area is not forcefully invalidated when its backing gmem page is zapped, such as during a PUNCH HOLE...