{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-44958",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-44958"
  ],
  "published": "2024-09-04T18:36:26Z",
  "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 <TASK>\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 </TASK>\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.",
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  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-44958"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2a3548c7ef2e135aee40e7e5e44e7d11b893e7c4"
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      "url": "https://git.kernel.org/stable/c/2cf7665efe451e48d27953e6b5bc627d518c902b"
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      "url": "https://git.kernel.org/stable/c/65727331b60197b742089855ac09464c22b96f66"
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      "url": "https://git.kernel.org/stable/c/d0c87a3c6be10a57aa3463c32c3fc6b2a47c3dab"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e22f910a26cc2a3ac9c66b8e935ef2a7dd881117"
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  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-24T06:48:58Z"
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}