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CVE-2026-89789 gtp: add synchronize_net() in gtp_newlink() error path to prevent use-after-free

🗓️ 16 Sep 2026 08:48:25Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 36 Views

Use-after-free in Linux kernel gtp_newlink() error path from missing synchronize_net before kfree.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/gtp.c"
    ],
    "versions": [
      {
        "version": "459aa660eb1d8ce67080da1983bb81d716aa5a69",
        "lessThan": "fcafb2b1430824bae4258c01a439ec97ca0c6973",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "459aa660eb1d8ce67080da1983bb81d716aa5a69",
        "lessThan": "3ca3da5c305caa873ddb81e8c6b118143f6dd3d1",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "459aa660eb1d8ce67080da1983bb81d716aa5a69",
        "lessThan": "6f815c2fb6ab20385f81c353cdad0ea3b88132af",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "459aa660eb1d8ce67080da1983bb81d716aa5a69",
        "lessThan": "e3b9aa0773abd5d4ed90be41ce5306c146d5b09e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "459aa660eb1d8ce67080da1983bb81d716aa5a69",
        "lessThan": "fd8396cfecbd904468c71362f08aaa25f96d5337",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "459aa660eb1d8ce67080da1983bb81d716aa5a69",
        "lessThan": "7677eb2cbf2cc7446de474c01a6b06277c0051e5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "459aa660eb1d8ce67080da1983bb81d716aa5a69",
        "lessThan": "8d85498016a5bb56339734a14c276209fa65bafc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "459aa660eb1d8ce67080da1983bb81d716aa5a69",
        "lessThan": "d989e22ae9802c52c56ad4284d0caf26696cf6ae",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/net/gtp.c"
    ],
    "versions": [
      {
        "version": "4.7",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.7",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.270",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.221",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.188",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.157",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.110",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.52",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.6",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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16 Sep 2026 14:38Current
CVSS 3.17.8
EPSS0.00171
36