Fixed
Created: Jul 29, 2024
Updated: Sep 2, 2025
Resolved Date: Aug 28, 2025
Found In Version: 10.22.33.1
Fix Version: 10.22.33.22
Severity: Standard
Applicable for: Wind River Linux LTS 22
Component/s: Kernel
In the Linux kernel, the following vulnerability has been resolved:sched/deadline: Fix task_struct reference leakDuring the execution of the following stress test with linux-rt:stress-ng --cyclic 30 --timeout 30 --minimize --quietkmemleak frequently reported a memory leak concerning the task_struct:unreferenced object 0xffff8881305b8000 (size 16136): comm "stress-ng", pid 614, jiffies 4294883961 (age 286.412s) object hex dump (first 32 bytes): 02 40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 .@.............. 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ debug hex dump (first 16 bytes): 53 09 00 00 00 00 00 00 00 00 00 00 00 00 00 00 S............... backtrace: <00000000046b6790>] dup_task_struct+0x30/0x540 [<00000000c5ca0f0b>] copy_process+0x3d9/0x50e0 [<00000000ced59777>] kernel_clone+0xb0/0x770 [<00000000a50befdc>] __do_sys_clone+0xb6/0xf0 [<000000001dbf2008>] do_syscall_64+0x5d/0xf0 [<00000000552900ff>] entry_SYSCALL_64_after_hwframe+0x6e/0x76The issue occurs in start_dl_timer(), which increments the task_structreference count and sets a timer. The timer callback, dl_task_timer,is supposed to decrement the reference count upon expiration. However,if enqueue_task_dl() is called before the timer expires and cancels it,the reference count is not decremented, leading to the leak.This patch fixes the reference leak by ensuring the task_structreference count is properly decremented when the timer is canceled.
CREATE(Triage):(User=admin) [CVE-2024-41023 (https://nvd.nist.gov/vuln/detail/CVE-2024-41023)
