FKIE_CVE-2026-98321

Vulnerability from fkie_nvd - Published: 2026-10-06 09:18 - Updated: 2026-10-06 09:18
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_nat: unregister and release hooks on error If nf_hook_entries_insert_raw() fails, the NAT hooks get never released, resulting in a memleak. Postpone setting nat_proto_net->nat_hook_ops when the hooks are registered to simplify the error path to decide whether the nat hooks need unwinding.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/79084567cd082fb4482e1ea457580e7d6504dd99
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cbdd39ce42530a193c56beb206a3356cb6d01016
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/df80342f4bfc023ad7d6703df5e27f583ff0cb8d
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nf_nat_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "79084567cd082fb4482e1ea457580e7d6504dd99",
              "status": "affected",
              "version": "1cd472bf036ca038e783ef5f058f54e45b7e8180",
              "versionType": "git"
            },
            {
              "lessThan": "df80342f4bfc023ad7d6703df5e27f583ff0cb8d",
              "status": "affected",
              "version": "1cd472bf036ca038e783ef5f058f54e45b7e8180",
              "versionType": "git"
            },
            {
              "lessThan": "cbdd39ce42530a193c56beb206a3356cb6d01016",
              "status": "affected",
              "version": "1cd472bf036ca038e783ef5f058f54e45b7e8180",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nf_nat_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.18"
            },
            {
              "lessThan": "4.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc4",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_nat: unregister and release hooks on error\n\nIf nf_hook_entries_insert_raw() fails, the NAT hooks get never released,\nresulting in a memleak.\n\nPostpone setting nat_proto_net-\u003enat_hook_ops when the hooks are\nregistered to simplify the error path to decide whether the nat hooks\nneed unwinding."
    }
  ],
  "id": "CVE-2026-98321",
  "lastModified": "2026-10-06T09:18:24.117",
  "metrics": {},
  "published": "2026-10-06T09:18:24.117",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/79084567cd082fb4482e1ea457580e7d6504dd99"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cbdd39ce42530a193c56beb206a3356cb6d01016"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/df80342f4bfc023ad7d6703df5e27f583ff0cb8d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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