kernel: KVM: x86/mmu: race condition in direct_page_fault()

A flaw was found in the Linux kernel in the KVM. A race condition in directpagefault allows guest OS users to cause a denial of service host OS crash or host OS memory corruption when nested virtualization and the TDP MMU are enabled...

VMware Issues Security Patches for ESXi, Workstation, and Fusion Flaws

VMware has released patches to address four security flaws impacting ESXi, Workstation, and Fusion, including two critical flaws that could lead to code execution. Tracked as CVE-2024-22252 and CVE-2024-22253, the vulnerabilities have been described as use-after-free bugs in the XHCI USB...

DEBIAN-CVE-2023-52597

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: fix setting of fpc register kvmarchvcpuioctlsetfpu allows to set the floating point control fpc register of a guest cpu. The new value is tested for validity by temporarily loading it into the fpc register. This may le...

KVM Heap Buffer Overflow DoS

The vulnerability of the kvmiobusunregisterdev function in the KVM subsystem of Linux operating systems is related to errors in pointer assignment during device registration. Exploiting this vulnerability can allow an attacker to cause system failures...

CVE-2023-25681

LDAP users on IBM Spectrum Virtualize 8.5 which are configured to require multifactor authentication can still authenticate to the CIM interface using only username and password. This does not affect local users with MFA configured or remote users authenticating via single sign-on. IBM X-Force ID...

CVE-2021-47092

In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: Always clear vmx-fail on emulationrequired Revert a relatively recent change that set vmx-fail if the vCPU is in L2 and emulationrequired is true, as that behavior is completely bogus. Setting vmx-fail and synthesizing ...

hw: amd: INVD instruction may lead to a loss of SEV-ES guest machine memory integrity problem

A flaw was found in some of AMD CPU's due to improper or unexpected behavior of the INVD. This issue may allow an attacker with a malicious hypervisor to affect cache line write-back behavior of the CPU, potentially leading to a loss of guest virtual machine VM memory integrity...

Advisory ROSA-SA-2024-2364

Software: ncurses 6.1 OS: ROSA Virtualization 2.1 packageevrstring: ncurses-6.1-9.20180224.rv3 CVE-ID: CVE-2019-17594 BDU-ID: None CVE-Crit: MEDIUM CVE-DESC.: There is a heap-based buffer enumeration in the ncfindentry function in tinfo/comphash.c in the terminfo library in ncurses. CVE-STATUS:...

VMware ESXi security vulnerabilities

VMware ESXi is a server virtualization platform from VMware that can be installed directly on physical servers. An out-of-bounds write vulnerability exists in VMware ESXi, which can be exploited by a local attacker with administrative privileges to cause a sandbox escape...

DEBIAN-CVE-2021-47092

In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: Always clear vmx-fail on emulationrequired Revert a relatively recent change that set vmx-fail if the vCPU is in L2 and emulationrequired is true, as that behavior is completely bogus. Setting vmx-fail and synthesizing ...

DEBIAN-CVE-2021-47094

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Don't advance iterator after restart due to yielding After dropping mmulock in the TDP MMU, restart the iterator during tdpiternext and do not advance the iterator. Advancing the iterator results in skipping the...

UBUNTU-CVE-2021-47092

In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: Always clear vmx-fail on emulationrequired Revert a relatively recent change that set vmx-fail if the vCPU is in L2 and emulationrequired is true, as that behavior is completely bogus. Setting vmx-fail and synthesizing ...

CVE-2021-47092

In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: Always clear vmx-fail on emulationrequired Revert a relatively recent change that set vmx-fail if the vCPU is in L2 and emulationrequired is true, as that behavior is completely bogus. Setting vmx-fail and synthesizing ...

Linux kernel security vulnerabilities

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. Linux kernel has a security vulnerability that stems from a security issue in KVM x86/mmu...

SUSE CVE-2021-47062

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Use onlinevcpus, not createdvcpus, to iterate over vCPUs Use the kvmforeachvcpu helper to iterate over vCPUs when encrypting VMSAs for SEV, which effectively switches to use onlinevcpus instead of createdvcpus. This fix...

PT-2024-14602 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: A vulnerability in the Linux kernel has been resolved, related to the x86/reboot component. The issue involves VMCLEAR active VMCSes before any emergency reboot. Recommendations: At th...

SUSE CVE-2021-46977

In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: Disable preemption when probing user return MSRs Disable preemption when probing a user return MSR via RDSMR/WRMSR. If the MSR holds a different value per logical CPU, the WRMSR could corrupt the host's value if KVM is...

SUSE CVE-2021-46978

In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Always make an attempt to map eVMCS after migration When enlightened VMCS is in use and nested state is migrated with vmxgetnestedstate/vmxsetnestedstate KVM can't map evmcs page right away: evmcs gpa is not 'struct...

SUSE CVE-2021-47008

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Make sure GHCB is mapped before updating Access to the GHCB is mainly in the VMGEXIT path and it is known that the GHCB will be mapped. But there are two paths where it is possible the GHCB might not be mapped. The...

DEBIAN-CVE-2021-47060

In the Linux kernel, the following vulnerability has been resolved: KVM: Stop looking for coalesced MMIO zones if the bus is destroyed Abort the walk of coalesced MMIO zones if kvmiobusunregisterdev fails to allocate memory for the new instance of the bus. If it can't instantiate a new bus,...