Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: perf/core: Fixed a data race between perfeventsetoutput and perfmmapclose. Yang Jihing reported a race between perfeventsetoutput and perfmmapclose: CPU1 CPU2 perfmmapclosee2 if atomicdecandtest&e2-rb-mmapcount // 1 - 0 detachres...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Ring Buffer: Do not swap the cpubuffer during the resize process When the ringbufferswapcpu function is called during the resize process, the cpu buffer is swapped in the middle, resulting in an incorrect state. Continuing to run...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: tracing: Restructure traceclockglobal to never block. It was reported that a fix to the ring buffer recursion detection would cause a hung machine during suspend/resume testing. The following backtrace was extracted from debuggin...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Tracing: Free buffers when a used dynamic event is removed After 65536 dynamic events have been added and removed, the “type” field of the event uses the first available type number which is not currently used by other events. A...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerabilities have been resolved: Ring-Buffer: Fixed a deadloop issue when reading tracepipe. A soft lockup occurs when reading the file ‘tracepipe’: - Watchdog: BUG: Soft lockup – CPU6 stuck for 22 seconds! cat:4488 - ... - RIP: 0010:...

SUSE CVE-2026-74601

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...

SUSE CVE-2026-74602

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...

SUSE CVE-2026-74634

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

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-2026-74601

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

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...

AZL-97146 CVE-2026-74601 affecting package kernel 6.6.150.1-1

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

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...

UBUNTU-CVE-2026-74634

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-2026-74601

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...

UBUNTU-CVE-2026-74691

In the Linux kernel, the following vulnerability has been resolved: net: thunderbolt: Tear down DMA paths before stopping the rings tbnetteardown stops both rings and frees their frame buffers before calling tbxdomaindisablepaths. tbringstop zeroes the ring's descriptor base and tbnetfreebuffers...

UBUNTU-CVE-2026-74601

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-2026-74691 net: thunderbolt: Tear down DMA paths before stopping the rings

In the Linux kernel, the following vulnerability has been resolved: net: thunderbolt: Tear down DMA paths before stopping the rings tbnetteardown stops both rings and frees their frame buffers before calling tbxdomaindisablepaths. tbringstop zeroes the ring's descriptor base and tbnetfreebuffers...

CVE-2026-74691

CVE-2026-74691 is a teardown ordering bug in the Linux kernel Thunderbolt network driver (net: thunderbolt / tbnet). The driver stops its DMA rings and frees frame buffers before deactivating the high-speed DMA paths, but the setup path was previously fixed to enable paths last. Teardown was neve...

CVE-2026-74634

This vulnerability affects the Linux kernel ring-buffer subsystem. The root cause is that ring_buffer_subbuf_order_set() frees buffer pages even when resizing is disabled, leaving a non-consuming reader exposed to a use-after-free in rb_advance_iter(). The fix returns -EBUSY on resize_disabled, m...