{"id":"CVE-2024-44958","summary":"sched/smt: Fix unbalance sched_smt_present dec/inc","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nsched/smt: Fix unbalance sched_smt_present dec/inc\n\nI got the following warn report while doing stress test:\n\njump label: negative count!\nWARNING: CPU: 3 PID: 38 at kernel/jump_label.c:263 static_key_slow_try_dec+0x9d/0xb0\nCall Trace:\n \u003cTASK\u003e\n __static_key_slow_dec_cpuslocked+0x16/0x70\n sched_cpu_deactivate+0x26e/0x2a0\n cpuhp_invoke_callback+0x3ad/0x10d0\n cpuhp_thread_fun+0x3f5/0x680\n smpboot_thread_fn+0x56d/0x8d0\n kthread+0x309/0x400\n ret_from_fork+0x41/0x70\n ret_from_fork_asm+0x1b/0x30\n \u003c/TASK\u003e\n\nBecause when cpuset_cpu_inactive() fails in sched_cpu_deactivate(),\nthe cpu offline failed, but sched_smt_present is decremented before\ncalling sched_cpu_deactivate(), it leads to unbalanced dec/inc, so\nfix it by incrementing sched_smt_present in the error path.","modified":"2026-04-16T04:34:40.636582624Z","published":"2024-09-04T18:35:56.655Z","related":["SUSE-SU-2024:3983-1","SUSE-SU-2024:3984-1","SUSE-SU-2024:3985-1","SUSE-SU-2024:3986-1","SUSE-SU-2024:4100-1","SUSE-SU-2024:4318-1","SUSE-SU-2024:4364-1","SUSE-SU-2024:4387-1","SUSE-SU-2025:0034-1","SUSE-SU-2025:20163-1","SUSE-SU-2025:20164-1","SUSE-SU-2025:20246-1","SUSE-SU-2025:20247-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/44xxx/CVE-2024-44958.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2a3548c7ef2e135aee40e7e5e44e7d11b893e7c4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2cf7665efe451e48d27953e6b5bc627d518c902b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/65727331b60197b742089855ac09464c22b96f66"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d0c87a3c6be10a57aa3463c32c3fc6b2a47c3dab"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e22f910a26cc2a3ac9c66b8e935ef2a7dd881117"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/44xxx/CVE-2024-44958.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-44958"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"c5511d03ec090980732e929c318a7a6374b5550e"},{"fixed":"2a3548c7ef2e135aee40e7e5e44e7d11b893e7c4"},{"fixed":"2cf7665efe451e48d27953e6b5bc627d518c902b"},{"fixed":"65727331b60197b742089855ac09464c22b96f66"},{"fixed":"d0c87a3c6be10a57aa3463c32c3fc6b2a47c3dab"},{"fixed":"e22f910a26cc2a3ac9c66b8e935ef2a7dd881117"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"01659361c63fdc91c0af239d08cdd211d590a656"},{"last_affected":"a2c094816f894b7a265851fad858e994fa0f78b3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-44958.json"}}],"schema_version":"1.7.5"}