kernel: futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock

A flaw was found in the Linux kernel's futex Fast Userspace Mutex requeue mechanism. When a non-top waiter attempts to requeue a Priority Inheritance PI futex it already owns, a NULL pointer dereference can occur. This issue, specifically within the removewaiter function during a self-deadlock...

kernel: futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock

A flaw was found in the Linux kernel's futex Fast Userspace Mutex requeue mechanism. When a non-top waiter attempts to requeue a Priority Inheritance PI futex it already owns, a NULL pointer dereference can occur. This issue, specifically within the removewaiter function during a self-deadlock...

kernel: rtmutex: Use waiter::task instead of current in remove_waiter()

A flaw was found in the Linux kernel. When the kernel's real-time mutex rtmutex component performs a specific operation called 'proxy-lock rollback' during futex requeue, it incorrectly handles task pointers. This can lead to a 'Use-After-Free' UAF vulnerability, where the system attempts to use...

kernel: futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock

A flaw was found in the Linux kernel's futex Fast Userspace Mutex requeue mechanism. When a non-top waiter attempts to requeue a Priority Inheritance PI futex it already owns, a NULL pointer dereference can occur. This issue, specifically within the removewaiter function during a self-deadlock...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerabilit...

RockyLinux 10 : kernel (RLSA-2026:38492)

The remote RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:38492 advisory. kernel: md/bitmap: fix GPF in writepage caused by resize race CVE-2026-43163 kernel: rtmutex: Use waiter::task instead of current in removewaiter...

Important: Red Hat Security Advisory: kernel security, bug fix, and enhancement update

An update for kernel is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...

Important: kernel security, bug fix, and enhancement update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: Linux kernel: Memory leak in networking due to incorrect GRO packet handling CVE-2026-22979 kernel: rtmutex: Use waiter::task instead of current in removewaiter CVE-2026-43499 kernel: net...

AlmaLinux 9 : kernel (ALSA-2026:38491)

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:38491 advisory. kernel: Linux kernel: Memory leak in networking due to incorrect GRO packet handling CVE-2026-22979 kernel: rtmutex: Use waiter::task instead of current ...

AlmaLinux 10 : kernel (ALSA-2026:38492)

The remote AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:38492 advisory. kernel: md/bitmap: fix GPF in writepage caused by resize race CVE-2026-43163 kernel: rtmutex: Use waiter::task instead of current in removewaiter...

ALSA-2026:38492 Important: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: md/bitmap: fix GPF in writepage caused by resize race CVE-2026-43163 kernel: rtmutex: Use waiter::task instead of current in removewaiter CVE-2026-43499 kernel: futex/requeue: Prevent NUL...

kernel: rtmutex: Use waiter::task instead of current in remove_waiter()

A flaw was found in the Linux kernel. When the kernel's real-time mutex rtmutex component performs a specific operation called 'proxy-lock rollback' during futex requeue, it incorrectly handles task pointers. This can lead to a 'Use-After-Free' UAF vulnerability, where the system attempts to use...

Amazon Linux 2 : kernel, --advisory ALAS2-2026-3801 (ALAS-2026-3801)

The version of kernel installed on the remote host is prior to 4.14.355-284.740. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3801 advisory. In the Linux kernel, the following vulnerability has been resolved: rtmutex: Use waiter::task instead of current in...

Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.4-2026-126 (ALASKERNEL-5.4-2026-126)

The version of kernel installed on the remote host is prior to 5.4.302-226.484. It is, therefore, affected by a vulnerability as referenced in the ALAS2KERNEL-5.4-2026-126 advisory. In the Linux kernel, the following vulnerability has been resolved: rtmutex: Use waiter::task instead of current in...

RHEL 10 : kernel (RHSA-2026:37728)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:37728 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: rtmutex: Use waiter::task...

Linux Distros Unpatched Vulnerability : CVE-2026-53163

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - locking/rtmutex: Skip removewaiter when waiter is not enqueued syzbot triggered the following splat in removewaiter via FUTEXCMPREQUEUEPI: KASAN: null-ptr-deref...

SUSE CVE-2026-53163

In the Linux kernel, the following vulnerability has been resolved: locking/rtmutex: Skip removewaiter when waiter is not enqueued syzbot triggered the following splat in removewaiter via FUTEXCMPREQUEUEPI: KASAN: null-ptr-deref in range 0x0000000000000a88-0x0000000000000a8f...

CVE-2026-53163

In the Linux kernel, the following vulnerability has been resolved: locking/rtmutex: Skip removewaiter when waiter is not enqueued syzbot triggered the following splat in removewaiter via FUTEXCMPREQUEUEPI: KASAN: null-ptr-deref in range 0x0000000000000a88-0x0000000000000a8f...

AZL-90620 CVE-2026-53163 affecting package kernel for versions less than 6.6.144.1-1

In the Linux kernel, the following vulnerability has been resolved: locking/rtmutex: Skip removewaiter when waiter is not enqueued syzbot triggered the following splat in removewaiter via FUTEXCMPREQUEUEPI: KASAN: null-ptr-deref in range 0x0000000000000a88-0x0000000000000a8f...

EUVD-2026-39254

In the Linux kernel, the following vulnerability has been resolved: locking/rtmutex: Skip removewaiter when waiter is not enqueued syzbot triggered the following splat in removewaiter via FUTEXCMPREQUEUEPI: KASAN: null-ptr-deref in range 0x0000000000000a88-0x0000000000000a8f...