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CVE-2026-98586 sctp: hold asoc or transport before mod_timer() in timer handlers

🗓️ 18 Oct 2026 15:18:59Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 29 Views

Race condition in Linux kernel sctp timer handlers leads to refcount underflow.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-98586
18 Oct 202615:18
–cve
debiancve
Debian CVE
CVE-2026-98586
18 Oct 202615:18
–debiancve
euvd
EUVD
EUVD-2026-103631
18 Oct 202615:18
–euvd
mscve
Microsoft CVE
sctp: hold asoc or transport before mod_timer() in timer handlers
20 Oct 202608:03
–mscve
nvd
NVD
CVE-2026-98586
18 Oct 202616:17
–nvd
osv_azl
osv_azl
AZL-108647 CVE-2026-98586 affecting package kernel 6.6.157.1-1
18 Oct 202616:17
–osv_azl
osv_debian
osv_debian
DEBIAN-CVE-2026-98586
18 Oct 202617:47
–osv_debian
osv_ubuntu
osv_ubuntu
UBUNTU-CVE-2026-98586
19 Oct 202600:00
–osv_ubuntu
ptsecurity
Positive Technologies
PT-2026-116805
18 Oct 202600:00
–ptsecurity
redhatcve
RedhatCVE
CVE-2026-98586
20 Oct 202604:11
–redhatcve
Rows per page
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/sctp/input.c",
      "net/sctp/sm_sideeffect.c"
    ],
    "versions": [
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "f7dea7eaea20fe9b80f8f77ba44d02b4a17f8050",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "f9d929026d487a988bfa12c065f892e823e5b6ab",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "9d3d39da054476e7aa05cd877b93ca73a9a77434",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "27c51a9b55b227309161c903f9ecfbf022516bc2",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "d18cb8fd1b6ba95c85de644203cfe1b071ff0c0f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "35bf3b23c9a871f44c1453d85f8332be4e088dda",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "cae23ae3f7887a1cf8a75da38edcebeef695040f",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/sctp/input.c",
      "net/sctp/sm_sideeffect.c"
    ],
    "versions": [
      {
        "version": "2.6.12",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.12",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.222",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.189",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.158",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.112",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.55",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.9",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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