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

In the Linux kernel, the following vulnerabilities have been resolved: tracing: Fixed an out-of-bounds write in traceseqtobuffer. syzbot reported this bug: ================================================================== Bug: KASAN: Out-of-bounds access in traceseqtobuffer in...

CVE-2026-89749

A flaw was found in the Linux kernel. Specifically, within the tracing subsystem, the eventteststuff function can pass an invalid error pointer to kthreadstop if kthreadrun fails to create a kernel thread. This improper handling of error pointers, particularly under memory pressure, leads to...

Linux Distros Unpatched Vulnerability : CVE-2026-89749

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - tracing: Fix crash passing ERRPTR to kthreadstop eventteststuff calls kthreadrun and unconditionally passes the returned taskstruct pointer to kthreadstop...

CVE-2026-89748

A flaw was found in the Linux kernel's tracing subsystem. An issue in the simpleringbufferswapreaderpage function, related to retry exhaustion during ring buffer reader page swaps, can lead to incorrect handling of successful or failed operations. This can result in corruption of the ring buffer,...

AZL-100491 CVE-2026-89749 affecting package kernel 6.6.150.1-1

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...

AZL-100169 CVE-2026-89746 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix use-after-free with same-name named triggers When two hist triggers on different events are registered with the same name=, the second one reuses the first as nameddata. Both are added to tr-histvars by savehistvars...

DEBIAN-CVE-2026-89746

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix use-after-free with same-name named triggers When two hist triggers on different events are registered with the same name=, the second one reuses the first as nameddata. Both are added to tr-histvars by savehistvars...

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-2026-89746

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix use-after-free with same-name named triggers When two hist triggers on different events are registered with the same name=, the second one reuses the first as nameddata. Both are added to tr-histvars by savehistvars...

UBUNTU-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...

UBUNTU-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-2026-89750 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...

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-2026-89748 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...

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-2026-89746 tracing: Fix use-after-free with same-name named triggers

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix use-after-free with same-name named triggers When two hist triggers on different events are registered with the same name=, the second one reuses the first as nameddata. Both are added to tr-histvars by savehistvars...

CVE-2026-89746 tracing: Fix use-after-free with same-name named triggers

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix use-after-free with same-name named triggers When two hist triggers on different events are registered with the same name=, the second one reuses the first as nameddata. Both are added to tr-histvars by savehistvars...

PT-2026-90462

In the Linux kernel, the following vulnerability has been resolved: tracing: Fix use-after-free with same-name named triggers When two hist triggers on different events are registered with the same name=, the second one reuses the first as named data. Both are added to tr-hist vars by save hist...

PT-2026-90464

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