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

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 tracing: Fix use-after-free in trace_pipe read on sub-buffer order change

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

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-2026-89702

CVE-2026-89702 is a buffer overflow in the Linux kernel's NFSd (Network File System Daemon). The nfsd_fh_verify and nfsd_fh_verify_err tracepoints declare the server sockaddr ring-buffer slot using xpt_remotelen but fill it from xpt_local using xpt_locallen. For NFSv2/v3-over-UDP connections, xpt...

CVE-2026-89702 nfsd: size fh_verify server sockaddr slot by xpt_locallen

In the Linux kernel, the following vulnerability has been resolved: nfsd: size fhverify server sockaddr slot by xptlocallen The nfsdfhverify and nfsdfhverifyerr tracepoints declare the server sockaddr slot sized by xptremotelen but fill it from xptlocal using xptlocallen: TPSTRUCTentry...

CVE-2026-89702

In the Linux kernel, the following vulnerability has been resolved: nfsd: size fhverify server sockaddr slot by xptlocallen The nfsdfhverify and nfsdfhverifyerr tracepoints declare the server sockaddr slot sized by xptremotelen but fill it from xptlocal using xptlocallen: TPSTRUCTentry...

CVE-2026-89702 nfsd: size fh_verify server sockaddr slot by xpt_locallen

In the Linux kernel, the following vulnerability has been resolved: nfsd: size fhverify server sockaddr slot by xptlocallen The nfsdfhverify and nfsdfhverifyerr tracepoints declare the server sockaddr slot sized by xptremotelen but fill it from xptlocal using xptlocallen: TPSTRUCTentry...

CVE-2026-89503 ring-buffer: Fix subbuf resize race with ring_buffer_alloc_read_page()

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix subbuf resize race with ringbufferallocreadpage ringbufferallocreadpage is racy with ringbuffersubbuforderset, it can allocate a reader page with an outdated order. This isn't a big issue, the user can still...

EUVD-2026-76409

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix subbuf resize race with ringbufferallocreadpage ringbufferallocreadpage is racy with ringbuffersubbuforderset, it can allocate a reader page with an outdated order. This isn't a big issue, the user can still...

CVE-2026-89503

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix subbuf resize race with ringbufferallocreadpage ringbufferallocreadpage is racy with ringbuffersubbuforderset, it can allocate a reader page with an outdated order. This isn't a big issue, the user can still...

CVE-2026-89503

CVE-2026-89503 is a race condition in the Linux kernel's ring-buffer component. The function ring_buffer_alloc_read_page() can race with ring_buffer_subbuf_order_set , causing bpage->order to not match the actual allocated memory. Red Hat notes this mismatch could lead to system instability or...

CVE-2026-89503 ring-buffer: Fix subbuf resize race with ring_buffer_alloc_read_page()

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix subbuf resize race with ringbufferallocreadpage ringbufferallocreadpage is racy with ringbuffersubbuforderset, it can allocate a reader page with an outdated order. This isn't a big issue, the user can still...

CVE-2026-89502

CVE-2026-89502 is a Linux kernel vulnerability in the ring-buffer subsystem. The root cause is that when sub-buffers use a page order greater than 0 , the cpu_buffer->free_page field is allocated using subbuf_order but subsequently freed with the wrong order, leading to an incorrect page relea...

CVE-2026-89501

CVE-2026-89501 affects the Linux kernel ring-buffer subsystem. The root cause is a race condition : ring_buffer_subbuf_order_set() can clear cpu_buffer->free_page without holding cpu_buffer::lock, creating a concurrency conflict with ring_buffer_alloc_read_page() and ring_buffer_free_read_page...

EUVD-2026-76407

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Hold cpubuffer::lock when resizing a subbuf Because, ringbuffersubbuforderset can clear cpubuffer-freepage, hold cpubuffer-lock to prevent races with ringbufferallocreadpage and ringbufferfreereadpage...

EUVD-2026-76408

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Free cpubuffer::freepage with subbuforder When sub-buffers use an order greater than 0, cpubuffer-freepage is allocated with subbuforder. Use the correct order for cpubuffer-freepage...

CVE-2026-89501 ring-buffer: Hold cpu_buffer::lock when resizing a subbuf

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Hold cpubuffer::lock when resizing a subbuf Because, ringbuffersubbuforderset can clear cpubuffer-freepage, hold cpubuffer-lock to prevent races with ringbufferallocreadpage and ringbufferfreereadpage...

CVE-2026-89502 ring-buffer: Free cpu_buffer::free_page with subbuf_order

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Free cpubuffer::freepage with subbuforder When sub-buffers use an order greater than 0, cpubuffer-freepage is allocated with subbuforder. Use the correct order for cpubuffer-freepage...

CVE-2026-89501

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Hold cpubuffer::lock when resizing a subbuf Because, ringbuffersubbuforderset can clear cpubuffer-freepage, hold cpubuffer-lock to prevent races with ringbufferallocreadpage and ringbufferfreereadpage...