CVE-2026-89751

In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Fix off-by-one in port I/O handling handlein and handleout in arch/x86/coco/tdx/tdx.c use: u64 mask = GENMASKBITSPERBYTE size, 0; GENMASKh, l includes bit h. For size=1 INB, this produces GENMASK8, 0 = 0x1FF 9 bits inste...

CVE-2026-89751 x86/tdx: Fix off-by-one in port I/O handling

In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Fix off-by-one in port I/O handling handlein and handleout in arch/x86/coco/tdx/tdx.c use: u64 mask = GENMASKBITSPERBYTE size, 0; GENMASKh, l includes bit h. For size=1 INB, this produces GENMASK8, 0 = 0x1FF 9 bits inste...

EUVD-2026-76662

In the Linux kernel, the following vulnerability has been resolved: tracing/userevents: Clear copied tracing state before fork duplication duptaskstruct copies usereventmm from the parent into the child, without grabbing a reference to it. usereventmmdup should replace it, but it leaves that copi...

CVE-2026-89750

CVE-2026-89750 is a Use-After-Free vulnerability in the Linux kernel's tracing/user_events subsystem. During fork, dup_task_struct() copies the user_event_mm pointer from the parent into the child without acquiring a reference. If user_event_mm_alloc() subsequently fails, the stale pointer is lef...

CVE-2026-89750 tracing/user_events: Clear copied tracing state before fork duplication

In the Linux kernel, the following vulnerability has been resolved: tracing/userevents: Clear copied tracing state before fork duplication duptaskstruct copies usereventmm from the parent into the child, without grabbing a reference to it. usereventmmdup should replace it, but it leaves that copi...

CVE-2026-89750 tracing/user_events: Clear copied tracing state before fork duplication

In the Linux kernel, the following vulnerability has been resolved: tracing/userevents: Clear copied tracing state before fork duplication duptaskstruct copies usereventmm from the parent into the child, without grabbing a reference to it. usereventmmdup should replace it, but it leaves that copi...

CVE-2026-89750

In the Linux kernel, the following vulnerability has been resolved: tracing/userevents: Clear copied tracing state before fork duplication duptaskstruct copies usereventmm from the parent into the child, without grabbing a reference to it. usereventmmdup should replace it, but it leaves that copi...

EUVD-2026-76661

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix crash passing ERRPTR to kthreadstop eventteststuff calls kthreadrun and unconditionally passes the returned taskstruct pointer to kthreadstop. kthreadrun returns an error pointer such as ERRPTR-ENOMEM when kthread...

CVE-2026-89749 tracing: Fix crash passing ERR_PTR to kthread_stop()

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix crash passing ERRPTR to kthreadstop eventteststuff calls kthreadrun and unconditionally passes the returned taskstruct pointer to kthreadstop. kthreadrun returns an error pointer such as ERRPTR-ENOMEM when kthread...

CVE-2026-89749

CVE-2026-89749 affects the Linux kernel tracing subsystem. In event_test_stuff(), the result of kthread_run() is unconditionally passed to kthread_stop(). When kthread_run() fails — for example returning ERR_PTR(-ENOMEM) under memory pressure during the boot-time event self-test — kthread_stop() ...

CVE-2026-89748 tracing: Fix retry exhaustion in simple ring buffer reader swap

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix retry exhaustion in simple ring buffer reader swap simpleringbufferswapreaderpage starts with retry set to 8 and post-decrements it only after a failed link replacement. On the final attempt, a successful replacement...

CVE-2026-89749 tracing: Fix crash passing ERR_PTR to kthread_stop()

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix crash passing ERRPTR to kthreadstop eventteststuff calls kthreadrun and unconditionally passes the returned taskstruct pointer to kthreadstop. kthreadrun returns an error pointer such as ERRPTR-ENOMEM when kthread...

CVE-2026-89748 tracing: Fix retry exhaustion in simple ring buffer reader swap

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix retry exhaustion in simple ring buffer reader swap simpleringbufferswapreaderpage starts with retry set to 8 and post-decrements it only after a failed link replacement. On the final attempt, a successful replacement...

CVE-2026-89748

CVE-2026-89748 is a logic error in the Linux kernel's tracing subsystem, specifically in simple_ring_buffer_swap_reader_page(). The function's retry counter is post-decremented only after a failed link replacement, so on the final attempt a successful replacement leaves retry at zero while a fail...

EUVD-2026-76660

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix retry exhaustion in simple ring buffer reader swap simpleringbufferswapreaderpage starts with retry set to 8 and post-decrements it only after a failed link replacement. On the final attempt, a successful replacement...

CVE-2026-89749

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix crash passing ERRPTR to kthreadstop eventteststuff calls kthreadrun and unconditionally passes the returned taskstruct pointer to kthreadstop. kthreadrun returns an error pointer such as ERRPTR-ENOMEM when kthread...

CVE-2026-89748

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix retry exhaustion in simple ring buffer reader swap simpleringbufferswapreaderpage starts with retry set to 8 and post-decrements it only after a failed link replacement. On the final attempt, a successful replacement...

CVE-2026-89747

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix use-after-free in tracepipe read on sub-buffer order change Writing to buffersubbufsizekb calls ringbuffersubbuforderset, which frees every sub-buffer of the ring buffer, including the reader page, and replaces them...

EUVD-2026-76659

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix use-after-free in tracepipe read on sub-buffer order change Writing to buffersubbufsizekb calls ringbuffersubbuforderset, which frees every sub-buffer of the ring buffer, including the reader page, and replaces them...

CVE-2026-89747

CVE-2026-89747 is a use-after-free vulnerability in the Linux kernel tracing subsystem , specifically in the trace_pipe read path. Writing to buffer_subbuf_size_kb triggers ring_buffer_subbuf_order_set(), which frees all sub-buffers (including the reader page) while active trace_pipe readers stil...