CVE-2026-74637: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: perf/core: Fix group leader use-after-free after sibling detach perfgroupdetach handles leader and sibling detach differently. When the group leader is detached, all siblings are promoted to singleton events and their groupleader...

kernel/sys.c: fix the racy usage of task_lock(tsk->group_leader) in sys_prlimit64() paths

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CVE-2025-40201

In the Linux kernel, the following vulnerability has been resolved: kernel/sys.c: fix the racy usage of tasklocktsk-groupleader in sysprlimit64 paths The usage of tasklocktsk-groupleader in sysprlimit64-doprlimit path is very broken. sysprlimit64 does gettaskstructtsk but this only protects...

CVE-2025-40201 kernel/sys.c: fix the racy usage of task_lock(tsk->group_leader) in sys_prlimit64() paths

In the Linux kernel, the following vulnerability has been resolved: kernel/sys.c: fix the racy usage of tasklocktsk-groupleader in sysprlimit64 paths The usage of tasklocktsk-groupleader in sysprlimit64-doprlimit path is very broken. sysprlimit64 does gettaskstructtsk but this only protects...

CVE-2025-40201

In the Linux kernel, the following vulnerability has been resolved: kernel/sys.c: fix the racy usage of tasklocktsk-groupleader in sysprlimit64 paths The usage of tasklocktsk-groupleader in sysprlimit64-doprlimit path is very broken. sysprlimit64 does gettaskstructtsk but this only protects...