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CVE-2026-98802 seg6: ensure packet data is writable before modifying SRH and IPv6 DA

🗓️ 18 Oct 2026 15:48:49Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 10 Views

Linux kernel seg6: advance_nextseg() and seg6_next_csid_advance_arg() write to shared data.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-98802
18 Oct 202615:48
–cve
debiancve
Debian CVE
CVE-2026-98802
18 Oct 202615:48
–debiancve
euvd
EUVD
EUVD-2026-103887
18 Oct 202615:48
–euvd
nvd
NVD
CVE-2026-98802
18 Oct 202616:17
–nvd
ptsecurity
Positive Technologies
PT-2026-117021
18 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/ipv6/seg6_local.c"
    ],
    "versions": [
      {
        "version": "140f04c33bbcf89440dcaf8bef04918abff5a52d",
        "lessThan": "e9141fdb7a2ead48cfcd60c681aba91d3014255b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "140f04c33bbcf89440dcaf8bef04918abff5a52d",
        "lessThan": "8ae3f4067ba4ae3a15581392f6dac422e3d3def0",
        "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/ipv6/seg6_local.c"
    ],
    "versions": [
      {
        "version": "4.14",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.14",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.10",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3-rc6",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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