CVE-2026-74634 ring-buffer: Prevent subbuf order change when resizing is disabled

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Prevent subbuf order change when resizing is disabled Because ringbuffersubbuforderset frees buffer pages, we can't allow it when resizing is disabled. A non-consuming reader is at risk of use-after-free rbadvanceite...

EUVD-2026-64539

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Initialise reader page order in rballocatecpubuffer In rballocatecpubuffer, bpage-order was omitted, leaving it as 0. This is an issue for a ring-buffer with subbufs bigger than PAGESIZE if when freed: freebufferpage...

CVE-2026-74601 ring-buffer: Use current_context for safe per-CPU buffer swap

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Use currentcontext for safe per-CPU buffer swap The ringbufferswapcpu function currently checks the per-CPU committing counter to determine if a buffer is actively being written to before performing the swap. However...

CVE-2026-74602 ring-buffer: Initialise reader page order in rb_allocate_cpu_buffer()

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Initialise reader page order in rballocatecpubuffer In rballocatecpubuffer, bpage-order was omitted, leaving it as 0. This is an issue for a ring-buffer with subbufs bigger than PAGESIZE if when freed: freebufferpage...

CVE-2026-74601

CVE-2026-74601 affects the Linux kernel tracing ring-buffer subsystem. The ring_buffer_swap_cpu() function relies on a per-CPU committing counter to determine whether a buffer is actively being written to before performing a swap. However, the counter can temporarily drop to zero during rb_move_t...

EUVD-2026-64538

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Use currentcontext for safe per-CPU buffer swap The ringbufferswapcpu function currently checks the per-CPU committing counter to determine if a buffer is actively being written to before performing the swap. However...

CVE-2026-74602

CVE-2026-74602 is a Linux kernel vulnerability in the ring-buffer subsystem. In rb_allocate_cpu_buffer(), the field bpage->order was left uninitialized (defaulting to 0). This becomes a problem when a ring-buffer uses subbuffers larger than PAGE_SIZE, because free_buffer_page() relies on the c...

CVE-2026-74601 ring-buffer: Use current_context for safe per-CPU buffer swap

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Use currentcontext for safe per-CPU buffer swap The ringbufferswapcpu function currently checks the per-CPU committing counter to determine if a buffer is actively being written to before performing the swap. However...

CVE-2026-74602 ring-buffer: Initialise reader page order in rb_allocate_cpu_buffer()

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Initialise reader page order in rballocatecpubuffer In rballocatecpubuffer, bpage-order was omitted, leaving it as 0. This is an issue for a ring-buffer with subbufs bigger than PAGESIZE if when freed: freebufferpage...

Linux Distros Unpatched Vulnerability : CVE-2026-74634

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ring-buffer: Prevent subbuf order change when resizing is disabled Because ringbuffersubbuforderset frees buffer pages, we can't allow it when resizing is...

Linux Distros Unpatched Vulnerability : CVE-2026-74602

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ring-buffer: Initialise reader page order in rballocatecpubuffer In rballocatecpubuffer, bpage-order was omitted, leaving it as 0. This is an issue for a...

PT-2026-79639

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the ring-buffer component where the ring buffer subbuf order set function allows changing the sub-buffer order even when resizing is disabled. Since this function free...

CVE-2026-74601: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Use currentcontext for safe per-CPU buffer swap The ringbufferswapcpu function currently checks the per-CPU committing counter to determine if a buffer is actively being written to before performing the swap. However...

CVE-2026-74602: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Initialise reader page order in rballocatecpubuffer In rballocatecpubuffer, bpage-order was omitted, leaving it as 0. This is an issue for a ring-buffer with subbufs bigger than PAGESIZE if when freed: freebufferpage...

CVE-2026-74602: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Initialise reader page order in rballocatecpubuffer In rballocatecpubuffer, bpage-order was omitted, leaving it as 0. This is an issue for a ring-buffer with subbufs bigger than PAGESIZE if when freed: freebufferpage...

CVE-2026-74601: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Use currentcontext for safe per-CPU buffer swap The ringbufferswapcpu function currently checks the per-CPU committing counter to determine if a buffer is actively being written to before performing the swap. However...

CVE-2026-74634: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Prevent subbuf order change when resizing is disabled Because ringbuffersubbuforderset frees buffer pages, we can't allow it when resizing is disabled. A non-consuming reader is at risk of use-after-free rbadvanceite...

CVE-2026-74634: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Prevent subbuf order change when resizing is disabled Because ringbuffersubbuforderset frees buffer pages, we can't allow it when resizing is disabled. A non-consuming reader is at risk of use-after-free rbadvanceite...

PT-2026-79606

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the ring buffer swap cpu function. The function relies on a per-CPU committing counter to verify if a buffer is being written to before performing a swap...

PT-2026-79607

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the rb allocate cpu buffer function where the bpage-order variable was not initialized, defaulting to 0. This causes problems for ring-buffers with sub-buffers larger...