CVE-2026-64555

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM for ARM64 architecture, specifically affecting nested virtualization. The kvmhyphandlemops function, responsible for handling certain virtualization operations, incorrectly restored the SPSREL2 register. This occurred because...

Linux Distros Unpatched Vulnerability : CVE-2026-67216

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - cJSON through 1.7.19 contains an inefficient algorithmic complexity flaw in cJSONCompare. When comparing objects, the function recurses into each shared subtree...

Linux Distros Unpatched Vulnerability : CVE-2026-67194

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Courier IMAP before 6.0.1 and Courier Mail Server before 2.0.2 allow authenticated IMAP users to crash the imapd process via deeply nested parenthesized SEARCH...

PT-2026-65814

cJSON through 1.7.19 contains an inefficient algorithmic complexity flaw in cJSON Compare. When comparing objects, the function recurses into each shared subtree twice, once in each direction, with no depth guard, making the running time exponential in nesting depth. A small, deeply nested docume...

CVE-2026-4648

Use of an insecure cryptographic algorithm in the cashless payment system using NFC wristbands from CasfID Servicios Tecnológicos S.L.U. version used at Resurrection Fest 2025, which employs cards based on MIFARE Classic technology FM11RF08S. The cryptographic weakness of the authentication...

CVE-2026-64555

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Fix SPSREL2 restore in kvmhyphandlemops kvmhyphandlemops resets the single-step state machine as part of rewinding state for a MOPS exception by modifying vcpucpsr and writing the result directly into hardware. In...

CVE-2026-64555 KVM: arm64: nv: Fix SPSR_EL2 restore in kvm_hyp_handle_mops()

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Fix SPSREL2 restore in kvmhyphandlemops kvmhyphandlemops resets the single-step state machine as part of rewinding state for a MOPS exception by modifying vcpucpsr and writing the result directly into hardware. In...

EUVD-2026-49606

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Fix SPSREL2 restore in kvmhyphandlemops kvmhyphandlemops resets the single-step state machine as part of rewinding state for a MOPS exception by modifying vcpucpsr and writing the result directly into hardware. In...

CVE-2026-64555 KVM: arm64: nv: Fix SPSR_EL2 restore in kvm_hyp_handle_mops()

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Fix SPSREL2 restore in kvmhyphandlemops kvmhyphandlemops resets the single-step state machine as part of rewinding state for a MOPS exception by modifying vcpucpsr and writing the result directly into hardware. In...

CVE-2026-64309

A flaw was found in the Linux kernel's crypto: ccp module. This vulnerability arises from improper initialization of Secure Nested Paging SNP when handling the ioctlSNPCOMMIT command. A local userspace process can exploit this by sending specific commands via /dev/sev ioctls. If Secure Encrypted...

CVE-2026-64285

A flaw was found in the Linux kernel's Kernel-based Virtual Machine KVM component, specifically within the Secure Nested Paging SNP guest functionality. When KVM populates a guest's CPUID Central Processor Unit Identifier data, it may attempt to write to a source memory page that is intended to b...

CVE-2026-64531

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reject oversized nested action attrs Open vSwitch stores generated flow actions as nlattrs, whose nlalen field is u16. Commit a1e64addf3ff "net: openvswitch: remove misbehaving actions length check" allowed the...

UBUNTU-CVE-2026-64531

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reject oversized nested action attrs Open vSwitch stores generated flow actions as nlattrs, whose nlalen field is u16. Commit a1e64addf3ff "net: openvswitch: remove misbehaving actions length check" allowed the...

EUVD-2026-49109

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reject oversized nested action attrs Open vSwitch stores generated flow actions as nlattrs, whose nlalen field is u16. Commit a1e64addf3ff "net: openvswitch: remove misbehaving actions length check" allowed the...

CVE-2026-64531

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reject oversized nested action attrs Open vSwitch stores generated flow actions as nlattrs, whose nlalen field is u16. Commit a1e64addf3ff "net: openvswitch: remove misbehaving actions length check" allowed the...

CVE-2026-64531 net: openvswitch: reject oversized nested action attrs

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reject oversized nested action attrs Open vSwitch stores generated flow actions as nlattrs, whose nlalen field is u16. Commit a1e64addf3ff "net: openvswitch: remove misbehaving actions length check" allowed the...

CVE-2026-64531

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reject oversized nested action attrs Open vSwitch stores generated flow actions as nlattrs, whose nlalen field is u16. Commit a1e64addf3ff "net: openvswitch: remove misbehaving actions length check" allowed the...

CVE-2026-64531 net: openvswitch: reject oversized nested action attrs

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reject oversized nested action attrs Open vSwitch stores generated flow actions as nlattrs, whose nlalen field is u16. Commit a1e64addf3ff "net: openvswitch: remove misbehaving actions length check" allowed the...

CVE-2026-64531

CVE-2026-64531 describes a Linux kernel issue in net/openvswitch: generated flow actions stored as nlattrs can exceed the 16-bit nla_len, allowing an oversized container to be closed with a truncated length. The fix preserves large total-action streams but rejects nested action containers that do...

PT-2026-64855

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description Open vSwitch stores generated flow actions as nlattrs, which use a nla len field of type u16. A previous change allowed the total sw flow actions stream to exceed 64 KiB but removed the...