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CVE-2026-98320 netfilter: flowtable: hold reference on ct until flow is released

🗓️ 06 Oct 2026 08:46:14Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 4 Views

RCU use-after-free in Linux kernel netfilter flowtable allows referencing wrong conntrack.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-98320
6 Oct 202608:46
–cve
debiancve
Debian CVE
CVE-2026-98320
6 Oct 202608:46
–debiancve
euvd
EUVD
EUVD-2026-93305
6 Oct 202608:46
–euvd
nvd
NVD
CVE-2026-98320
6 Oct 202609:18
–nvd
ptsecurity
Positive Technologies
PT-2026-106649
6 Oct 202600:00
–ptsecurity
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/netfilter/nf_flow_table_core.c"
    ],
    "versions": [
      {
        "version": "0ff90b6c20340e57616a51ae1a1bf18156d6638a",
        "lessThan": "93ff1594be1aad4da364462dd8db050ebcfda2de",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0ff90b6c20340e57616a51ae1a1bf18156d6638a",
        "lessThan": "eed6997e8dc40593a539fcc722e7ed51b18db86c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0ff90b6c20340e57616a51ae1a1bf18156d6638a",
        "lessThan": "61c6688be282277c6e91ab286a7acd0ae8681ac6",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0ff90b6c20340e57616a51ae1a1bf18156d6638a",
        "lessThan": "a43cd2b67b91e943273c913237a7a88c50cdcfbc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0ff90b6c20340e57616a51ae1a1bf18156d6638a",
        "lessThan": "8274cdc5f9c57e17ed77fc4ba76212536c840f25",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0ff90b6c20340e57616a51ae1a1bf18156d6638a",
        "lessThan": "12c1ac230f4ca16e0017b62a963ab75e0b48074f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0ff90b6c20340e57616a51ae1a1bf18156d6638a",
        "lessThan": "d9e6175a3ee48209ee65f294fc567b4e16b29b74",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0ff90b6c20340e57616a51ae1a1bf18156d6638a",
        "lessThan": "e75a9fa1d44bcbd66ea02e8781bcca6ea4076e0d",
        "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/netfilter/nf_flow_table_core.c"
    ],
    "versions": [
      {
        "version": "4.16",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.16",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.271",
        "lessThanOrEqual": "5.10.*",
        "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": "6.18.54",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.8",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3-rc4",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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06 Oct 2026 08:46Current
EPSS0.0022
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