SUSE CVE-2026-89791

In the Linux kernel, the following vulnerability has been resolved: perf: Fix use-after-free when perf mmap revival races with the last munmap perfmmapclose drops rb-mmapcount without holding event-mmapmutex the refcountdecandtest right before the refcountdecandmutexlock of event-mmapcount. A...

CVE-2026-89791: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: perf: Fix use-after-free when perf mmap revival races with the last munmap perfmmapclose drops rb-mmapcount without holding event-mmapmutex the refcountdecandtest right before the refcountdecandmutexlock of event-mmapcount. A...

The vulnerability of the perf_mmap_rb() function in the kernel/events/core.c module, which manages kernel events in Linux operating systems, allows an attacker to compromise the confidentiality, integrity, and accessibility of protected information.

The vulnerability of the perfmmaprb function in the kernel/events/core.c module, which handles kernel event management in Linux operating systems, is related to the reuse of previously released memory. Exploiting this vulnerability could allow an attacker to compromise the confidentiality,...

CVE-2026-23127: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: perf: Fix refcount warning on event-mmapcount increment When calling refcountinc&event-mmapcount inside perfmmaprb, the following warning is triggered: refcountt: addition on 0; use-after-free. WARNING: lib/refcount.c:25 PoC:...