CVE - CVE-2024-44958

CVE-ID
CVE-2024-44958	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: sched/smt: Fix unbalance sched_smt_present dec/inc I got the following warn report while doing stress test: jump label: negative count! WARNING: CPU: 3 PID: 38 at kernel/jump_label.c:263 static_key_slow_try_dec+0x9d/0xb0 Call Trace: <TASK> __static_key_slow_dec_cpuslocked+0x16/0x70 sched_cpu_deactivate+0x26e/0x2a0 cpuhp_invoke_callback+0x3ad/0x10d0 cpuhp_thread_fun+0x3f5/0x680 smpboot_thread_fn+0x56d/0x8d0 kthread+0x309/0x400 ret_from_fork+0x41/0x70 ret_from_fork_asm+0x1b/0x30 </TASK> Because when cpuset_cpu_inactive() fails in sched_cpu_deactivate(), the cpu offline failed, but sched_smt_present is decremented before calling sched_cpu_deactivate(), it leads to unbalanced dec/inc, so fix it by incrementing sched_smt_present in the error path.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/2a3548c7ef2e135aee40e7e5e44e7d11b893e7c4 URL:https://git.kernel.org/stable/c/2a3548c7ef2e135aee40e7e5e44e7d11b893e7c4 MISC:https://git.kernel.org/stable/c/2cf7665efe451e48d27953e6b5bc627d518c902b URL:https://git.kernel.org/stable/c/2cf7665efe451e48d27953e6b5bc627d518c902b MISC:https://git.kernel.org/stable/c/65727331b60197b742089855ac09464c22b96f66 URL:https://git.kernel.org/stable/c/65727331b60197b742089855ac09464c22b96f66 MISC:https://git.kernel.org/stable/c/d0c87a3c6be10a57aa3463c32c3fc6b2a47c3dab URL:https://git.kernel.org/stable/c/d0c87a3c6be10a57aa3463c32c3fc6b2a47c3dab MISC:https://git.kernel.org/stable/c/e22f910a26cc2a3ac9c66b8e935ef2a7dd881117 URL:https://git.kernel.org/stable/c/e22f910a26cc2a3ac9c66b8e935ef2a7dd881117
Assigning CNA
kernel.org
Date Record Created
20240821	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240821)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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