CVE-2026-23159

In the Linux kernel, the following vulnerability has been resolved: perf: sched: Fix perf crash with new isusertask helper In order to do a user space stacktrace the current task needs to be a user task that has executed in user space. It use to be possible to test if a task is a user task or not...

UBUNTU-CVE-2026-23159

In the Linux kernel, the following vulnerability has been resolved: perf: sched: Fix perf crash with new isusertask helper In order to do a user space stacktrace the current task needs to be a user task that has executed in user space. It use to be possible to test if a task is a user task or not...

CVE-2026-23159

In the Linux kernel, the following vulnerability has been resolved: perf: sched: Fix perf crash with new isusertask helper In order to do a user space stacktrace the current task needs to be a user task that has executed in user space. It use to be possible to test if a task is a user task or not...

CVE-2026-23159

CVE-2026-23159 is a Linux kernel vulnerability related to perf: sched crashing when tracing user-space tasks. The issue arose from an unsafe test for user-space task memory access: older checks relied on task_struct.mm, newer code attempted PF_KTHREAD checks and is_user_task() but not all kernel ...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from improper checking of the isusertask auxiliary function. This vulnerability could potentially caus...