CVE-2026-43240

A flaw was found in the Linux kernel's x86/kexec component. When a second-stage kernel is booted with a memory-limiting command, the Integrity Measurement Architecture IMA kexec buffer may be located outside the accessible memory range. This can lead to a kernel panic, effectively causing a Denia...

CVE-2026-43079

A flaw was found in the Linux kernel's perf/x86/intel/uncore component. This vulnerability occurs when Non-Uniform Memory Access NUMA is disabled and the system boots with fewer CPUs than available in a processor die. Under these conditions, the kernel continues to parse a discovery table for...

EUVD-2026-27662

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Ignore -EBUSY when checking nested events from vcpublock Ignore -EBUSY when checking nested events after exiting a blocking state while L2 is active, as exiting to userspace will generate a spurious userspace exit,...

EUVD-2026-27799

In the Linux kernel, the following vulnerability has been resolved: x86/kexec: add a sanity check on previous kernel's ima kexec buffer When the second-stage kernel is booted via kexec with a limiting command line such as "mem=", the physical range that contains the carried over IMA measurement...

CVE-2026-43265

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Ignore -EBUSY when checking nested events from vcpublock Ignore -EBUSY when checking nested events after exiting a blocking state while L2 is active, as exiting to userspace will generate a spurious userspace exit,...

CVE-2026-43214

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Add SRCU protection for reading PDPTRs in getsregs2 Add SRCU read-side protection when reading PDPTR registers in getsregs2. Reading PDPTRs may trigger access to guest memory: kvmpdptrread - svmcachereg - loadpdptrs -...

CVE-2026-43265

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Ignore -EBUSY when checking nested events from vcpublock Ignore -EBUSY when checking nested events after exiting a blocking state while L2 is active, as exiting to userspace will generate a spurious userspace exit,...

CVE-2026-43265

CVE-2026-43265 affects the Linux kernel KVM for x86. The vulnerability arises when a vCPU is put into a blocking state with an already-injected event or nested run, allowing a user or guest to manipulate vCPU state and trigger a spurious userspace exit (often KVM_EXIT_UNKNOWN) that could crash th...

CVE-2026-43265 KVM: x86: Ignore -EBUSY when checking nested events from vcpu_block()

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Ignore -EBUSY when checking nested events from vcpublock Ignore -EBUSY when checking nested events after exiting a blocking state while L2 is active, as exiting to userspace will generate a spurious userspace exit,...

CVE-2026-43240

In the Linux kernel, the following vulnerability has been resolved: x86/kexec: add a sanity check on previous kernel's ima kexec buffer When the second-stage kernel is booted via kexec with a limiting command line such as "mem=", the physical range that contains the carried over IMA measurement...

CVE-2026-43240 x86/kexec: add a sanity check on previous kernel's ima kexec buffer

In the Linux kernel, the following vulnerability has been resolved: x86/kexec: add a sanity check on previous kernel's ima kexec buffer When the second-stage kernel is booted via kexec with a limiting command line such as "mem=", the physical range that contains the carried over IMA measurement...

CVE-2026-43214

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Add SRCU protection for reading PDPTRs in getsregs2 Add SRCU read-side protection when reading PDPTR registers in getsregs2. Reading PDPTRs may trigger access to guest memory: kvmpdptrread - svmcachereg - loadpdptrs -...

CVE-2026-43109

In the Linux kernel, the following vulnerability has been resolved: x86: shadow stacks: proper error handling for mmap lock 김영민 reports that shstkpopsigframe doesn't check for errors from mmapreadlockkillable, which is a silly oversight, and also shows that we haven't marked those functions with...

CVE-2026-43109 x86: shadow stacks: proper error handling for mmap lock

In the Linux kernel, the following vulnerability has been resolved: x86: shadow stacks: proper error handling for mmap lock 김영민 reports that shstkpopsigframe doesn't check for errors from mmapreadlockkillable, which is a silly oversight, and also shows that we haven't marked those functions with...

SUSE CVE-2026-43073

In the Linux kernel, the following vulnerability has been resolved: x86-64: rename misleadingly named 'copyusernocache' function This function was a masterclass in bad naming, for various historical reasons. It claimed to be a non-cached user copy. It is literally neither of those things. It's a...

PT-2026-37419

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the x86 shadow stacks implementation where the shstk pop sigframe function fails to check for errors returned by mmap read lock killable. This occurs because the...

PT-2026-37580

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the x86 architecture during the kexec process. When a second-stage kernel is booted using a limiting command line, such as mem=, the physical range containing the...

CVE-2026-43073

In the Linux kernel, the following vulnerability has been resolved: x86-64: rename misleadingly named 'copyusernocache' function This function was a masterclass in bad naming, for various historical reasons. It claimed to be a non-cached user copy. It is literally neither of those things. It's a...

CVE-2026-43073 x86-64: rename misleadingly named '__copy_user_nocache()' function

In the Linux kernel, the following vulnerability has been resolved: x86-64: rename misleadingly named 'copyusernocache' function This function was a masterclass in bad naming, for various historical reasons. It claimed to be a non-cached user copy. It is literally neither of those things. It's a...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the misleading naming of the copyusernocache function in the x86-64 architecture. This function...