{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2024-44958",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-44958",
    "idYear": 2024,
    "status": "PUBLISHED",
    "publishedAt": "2024-09-04T18:35:56.655Z",
    "updatedAt": "2026-05-23T15:53:13.501Z",
    "importedAt": "2026-10-24T01:57:16.009Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "sched/smt: Fix unbalance sched_smt_present dec/inc",
      "summary": "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.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "c5511d03ec090980732e929c318a7a6374b5550e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2a3548c7ef2e135aee40e7e5e44e7d11b893e7c4"
            },
            {
              "version": "c5511d03ec090980732e929c318a7a6374b5550e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2cf7665efe451e48d27953e6b5bc627d518c902b"
            },
            {
              "version": "c5511d03ec090980732e929c318a7a6374b5550e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "65727331b60197b742089855ac09464c22b96f66"
            },
            {
              "version": "c5511d03ec090980732e929c318a7a6374b5550e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d0c87a3c6be10a57aa3463c32c3fc6b2a47c3dab"
            },
            {
              "version": "c5511d03ec090980732e929c318a7a6374b5550e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e22f910a26cc2a3ac9c66b8e935ef2a7dd881117"
            },
            {
              "version": "01659361c63fdc91c0af239d08cdd211d590a656",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "a2c094816f894b7a265851fad858e994fa0f78b3",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "4.14.86",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.15"
            },
            {
              "version": "4.19.7",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.20"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.20",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.20"
            },
            {
              "version": "5.15.165",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.105",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.46",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.10.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.10.*"
            },
            {
              "version": "6.11",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}