{"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":"2026-05-18T05:58:58.538972384Z","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"}]}],"versions":["v4.19","v4.14.85","v4.19.6","v4.14.84","v4.19.5","v4.19.4","v4.14.83","v4.14.82","v4.19.3","v4.14.81","v4.19.2","v4.14.80","v4.19.1","v4.14.79","v4.14.78","v4.19-rc2","v4.19-rc8","v4.19-rc4","v4.14.77","v4.19-rc1","v4.14.76","v4.19-rc7","v4.14.75","v4.14.74","v4.19-rc6","v4.19-rc5","v4.14.73","v4.19-rc3","v4.14.72","v4.14.71","v4.14.70","v4.14.69","v4.14.68","v4.14.67","v4.14.66","v4.18","v4.14.65","v4.14.64","v4.14.63","v4.18-rc1","v4.14.62","v4.18-rc8","v4.18-rc2","v4.18-rc5","v4.14.61","v4.18-rc6","v4.14.60","v4.18-rc7","v4.14.59","v4.17","v4.14.58","v4.18-rc3","v4.14.57","v4.14.56","v4.18-rc4","v4.14.55","v4.14.54","v4.14.53","v4.14.52","v4.14.51","v4.14.50","v4.14.49","v4.14.48","v4.17-rc1","v4.14.47","v4.17-rc2","v4.17-rc7","v4.17-rc3","v4.17-rc4","v4.16","v4.14.46","v4.14.45","v4.17-rc6","v4.14.44","v4.17-rc5","v4.14.43","v4.14.42","v4.14.41","v4.14.40","v4.14.39","v4.14.38","v4.14.37","v4.14.36","v4.14.35","v4.14.34","v4.14.33","v4.16-rc7","v4.16-rc4","v4.14.32","v4.16-rc1","v4.16-rc2","v4.16-rc5","v4.14.31","v4.14.30","v4.16-rc3","v4.16-rc6","v4.14.29","v4.14.28","v4.14.27","v4.14.26","v4.14.25","v4.14.24","v4.14","v4.14.23","v4.15","v4.14.22","v4.14.21","v4.14.20","v4.14.19","v4.14.18","v4.14.17","v4.15-rc1","v4.14.16","v4.15-rc4","v4.14.15","v4.15-rc9","v4.14.14","v4.15-rc8","v4.15-rc7","v4.14.13","v4.15-rc3","v4.15-rc2","v4.15-rc5","v4.15-rc6","v4.14.12","v4.14.11","v4.14.10","v4.14.9","v4.14.8","v4.14.7","v4.14.6","v4.14.5","v4.14.4","v4.14.3","v4.14.2","v4.14-rc1","v4.14.1","v4.14-rc7","v4.14-rc3","v4.13","v4.14-rc8","v4.14-rc4","v4.14-rc6","v4.14-rc2","v4.14-rc5","v4.13-rc2","v4.13-rc1","v4.13-rc3","v4.13-rc7","v4.13-rc4","v4.13-rc5","v4.13-rc6","v4.12-rc1","v4.12","v4.12-rc5","v4.12-rc7","v4.12-rc6","v4.12-rc4","v4.12-rc2","v4.12-rc3","v4.11","v4.11-rc1","v4.11-rc6","v4.11-rc8","v4.11-rc7","v4.11-rc3","v4.11-rc5","v4.11-rc2","v4.11-rc4","v4.10","v4.9","v4.10-rc8","v4.10-rc3","v4.10-rc1","v4.10-rc7","v4.10-rc6","v4.10-rc2","v4.10-rc5","v4.10-rc4","v4.9-rc7","v4.9-rc6","v4.9-rc8","v4.9-rc1","v4.9-rc5","v4.9-rc3","v4.9-rc4","v4.9-rc2","v4.8","v4.8-rc8","v4.8-rc2","v4.8-rc1","v4.8-rc7","v4.8-rc6","v4.8-rc5","v4.8-rc4","v4.8-rc3","v4.7","v4.7-rc4","v4.7-rc2","v4.7-rc1","v4.7-rc7","v4.7-rc6","v4.7-rc3","v4.7-rc5","v4.6","v4.6-rc1","v4.6-rc6","v4.6-rc4","v4.6-rc7","v4.6-rc5","v4.5-rc4","v4.6-rc2","v4.6-rc3","v4.5","v4.4","v4.5-rc1","v4.5-rc6","v4.5-rc2","v4.5-rc7","v4.5-rc5","v4.5-rc3","v4.4-rc1","v4.4-rc2","v4.4-rc8","v4.4-rc3","v4.4-rc7","v4.4-rc5","v4.4-rc6","v4.4-rc4","v4.3","v4.3-rc1","v4.3-rc6","v4.3-rc4","v4.3-rc2","v4.3-rc7","v4.3-rc5","v4.3-rc3","v4.2","v4.2-rc2","v4.2-rc1","v4.2-rc8","v4.2-rc4","v4.2-rc6","v4.2-rc7","v4.0-rc5","v4.2-rc5","v4.2-rc3","v4.1-rc2","v4.1","v4.1-rc1","v4.1-rc8","v4.1-rc7","v4.1-rc6","v4.1-rc3","v4.1-rc4","v4.0","v4.1-rc5","v4.0-rc1","v4.0-rc2","v4.0-rc7","v4.0-rc3","v4.0-rc6","v4.0-rc4","v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