kernel: posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del()

A race condition was found in the Linux kernel’s POSIX CPU timer handling, where handleposixcputimers may run concurrently with posixcputimerdel on an exiting task which could result in use-after-free scenarios. An attacker with local user access could use this flaw to crash or escalate their...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, and Red Hat Enterprise Linux 8.6 Telecommunications Update Service. Red Hat Product Security has rated this update as...

Important: Red Hat Security Advisory: kernel-rt security update

An update for kernel-rt is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support. 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...

kernel: posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del()

A race condition was found in the Linux kernel’s POSIX CPU timer handling, where handleposixcputimers may run concurrently with posixcputimerdel on an exiting task which could result in use-after-free scenarios. An attacker with local user access could use this flaw to crash or escalate their...

Oracle Linux 8 : kernel (ELSA-2025-15471)

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-15471 advisory. - posix-cpu-timers: fix race between handleposixcputimers and posixcputimerdel Oleg Nesterov RHEL-112775 CVE-2025-38352 - bpf: Don't use tnumrange on...

RHEL 9 : kernel-rt (RHSA-2025:15658)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:15658 advisory. The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism...

RHEL 7 : kernel-rt (RHSA-2025:15646)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:15646 advisory. The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism...

RHEL 8 : kernel (RHSA-2025:15656)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:15656 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: ext4: use-after-free in...

Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2025-20553)

The remote Oracle Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-20553 advisory. - netsched: schsfq: move the limit validation Octavian Purdila Orabug: 38377926 CVE-2025-37752 - netsched: schsfq: don't allow 1 packet limit...

AlmaLinux 8 : kernel-rt (ALSA-2025:15472)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2025:15472 advisory. kernel: bpf: Don't use tnumrange on array range checking for poke descriptors CVE-2022-49985 kernel: posix-cpu-timers: fix race between...

AlmaLinux 8 : kernel (ALSA-2025:15471)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2025:15471 advisory. kernel: bpf: Don't use tnumrange on array range checking for poke descriptors CVE-2022-49985 kernel: posix-cpu-timers: fix race between...

kernel: posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del()

A race condition was found in the Linux kernel’s POSIX CPU timer handling, where handleposixcputimers may run concurrently with posixcputimerdel on an exiting task which could result in use-after-free scenarios. An attacker with local user access could use this flaw to crash or escalate their...

kernel: posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del()

A race condition was found in the Linux kernel’s POSIX CPU timer handling, where handleposixcputimers may run concurrently with posixcputimerdel on an exiting task which could result in use-after-free scenarios. An attacker with local user access could use this flaw to crash or escalate their...

ALSA-2025:15472 Important: kernel-rt security update

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fixes: kernel: bpf: Don't use tnumrange on array range checking for poke descriptors CVE-2022-49985 kernel: posix-cpu-timers: fix race between...

The vulnerability of the `handle_posix_cpu_timers` function in the Linux operating system’s kernel allows a hacker to trigger a service failure.

The vulnerability of the handleposixcputimers function in the Linux operating system’s kernel is related to state management errors. Exploiting this vulnerability can allow a remote attacker to cause service interruptions...

Important: kernel-rt security update

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fixes: kernel: bpf: Don't use tnumrange on array range checking for poke descriptors CVE-2022-49985 kernel: posix-cpu-timers: fix race between...

Important: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: bpf: Don't use tnumrange on array range checking for poke descriptors CVE-2022-49985 kernel: posix-cpu-timers: fix race between handleposixcputimers and posixcputimerdel CVE-2025-38352 Fo...

Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Prevent buffer overflow crashes in debugfs with malformed user input CVE-2022-50030 In the Linux kernel, the following vulnerability has been resolved: iavf: Fix adminq error handling CVE-2022-50055 In...

Oracle Linux 9 : kernel (ELSA-2025-15011)

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-15011 advisory. - xfrm: interface: fix use-after-free after changing collectmd xfrm interface CKI Backport Bot RHEL-109529 CVE-2025-38500 - s390/pci: Fix duplicate...

ASB-A-425282960

In runposixcputimers of posix-cpu-timers.c, there is a possible way to trigger a use-after-free on a sigqueue object due to memory corruption. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation...