CVE-2026-89775

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...

EUVD-2026-80296

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 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

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...

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...

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-2026-93553

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the KVM arm64 vgic-its component where the vgic its save ite function unconditionally dereferences a NULL collection. This occurs when a guest issues a sequence of MAP...

PT-2026-93557

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the KVM arm64 implementation where VNCR Virtual Non-Global Control Register TLB invalidation does not correctly participate in the MMU invalidation retry mechanism. Th...

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...

CVE-2026-89981: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: arm64: Don't read GMIDEL1 when MTE is disabled cpuinfostorecpu gates the GMIDEL1 read on the raw IDAA64PFR1EL1, so it reads the register even when the kernel has disabled MTE CONFIGARM64MTE=n or arm64.nomte. KVM sets HCREL2.TID5 ...

CVE-2026-89918: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Correctly handle end of VA space TLBI invalidation Our TLB invalidation by VA code is based on comparing two ranges, one defined by the TLB, and one defined by the TLBI instruction. Each range is defined by a start an...

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-2026-89916: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Make VNCR invalidation participate in MMU invalidation retry A VNCR TLB invalidation can occur on one vcpu while another vcpu is faulting in this same page. Without correctly handling this, we can end up with the...

CVE-2026-89915: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Remove VM-wide VNCR mapping counter The global VNCR mapping counter is used to decide whether an L1 provided VNCR page is mapped in L0 on any CPU at the point of dealing with a TLB invalidation. It is incremented when...

CVE-2026-89914: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Sign-extend VA for range-based TLBI invalidation When the decoderangetlbi helper was moved to be used for S1 TLBIs, the required sign extension was omitted. Add it. As a result, special care must be taken to not...

CVE-2026-89912: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-its: Don't dereference a NULL collection on ITT save MAPC with V=0 drops ite-collection but leaves the ITE on the device's ITT list, and vgicitssaveite dereferences it unconditionally. A guest that issues MAPD,...

CVE-2026-89911: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Correctly cap TLBI Range to the architural limit TLB Invalidation by Range has a fairly powerful way of encoding pretty large ranges in a small number of bits. This range can be based on an arbitrary VA, which means i...