Vulnerability-Lookup

GHSA-3J2M-3XQ8-9948

Vulnerability from github – Published: 2026-06-25 09:31 – Updated: 2026-06-28 09:31

Details

In the Linux kernel, the following vulnerability has been resolved:

netfilter: conntrack_irc: fix possible out-of-bounds read

When parsing fails after we've matched the command string we should bail out instead of trying to match a different command.

This helper should be deprecated, given prevalence of TLS I doubt it has any relevance in 2026.

Severity

8.2 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53268"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-25T09:16:44Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: conntrack_irc: fix possible out-of-bounds read\n\nWhen parsing fails after we\u0027ve matched the command string we\nshould bail out instead of trying to match a different command.\n\nThis helper should be deprecated, given prevalence of TLS I doubt it has\nany relevance in 2026.",
  "id": "GHSA-3j2m-3xq8-9948",
  "modified": "2026-06-28T09:31:47Z",
  "published": "2026-06-25T09:31:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53268"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0afc802160af0df61ed374fdb97fb34cfe5cdf2f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4cdda7f868f48e2f81579371584fdbdce37df2c8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/573810f61bcd6b6815e2ff53bbdd2b9c9d747176"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/66eba0ffce3b7e11449946b4cbbef8ea36112f56"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c34f91305292083253df6a9f6c8ede02d4ccaea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8a1d6e40dedfe1068aee094d851bd69e289c9fd6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9e5da2379f968a3ea5a6e38921ab6201576466dc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ddddd8271359961e403d11c90c9ba9fc38914f7e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-53268 (GCVE-0-2026-53268)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:39 – Updated: 2026-06-28 06:41

Title

netfilter: conntrack_irc: fix possible out-of-bounds read

Summary

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack_irc: fix possible out-of-bounds read When parsing fails after we've matched the command string we should bail out instead of trying to match a different command. This helper should be deprecated, given prevalence of TLS I doubt it has any relevance in 2026.

Severity

8.2 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/4cdda7f868f48e2f8…
https://git.kernel.org/stable/c/8a1d6e40dedfe1068…
https://git.kernel.org/stable/c/0afc802160af0df61…
https://git.kernel.org/stable/c/7c34f913052920832…
https://git.kernel.org/stable/c/ddddd8271359961e4…
https://git.kernel.org/stable/c/9e5da2379f968a3ea…
https://git.kernel.org/stable/c/573810f61bcd6b681…
https://git.kernel.org/stable/c/66eba0ffce3b7e114…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 869f37d8e48f3911eb70f38a994feaa8f8380008 , < 4cdda7f868f48e2f81579371584fdbdce37df2c8 (git) Affected: 869f37d8e48f3911eb70f38a994feaa8f8380008 , < 8a1d6e40dedfe1068aee094d851bd69e289c9fd6 (git) Affected: 869f37d8e48f3911eb70f38a994feaa8f8380008 , < 0afc802160af0df61ed374fdb97fb34cfe5cdf2f (git) Affected: 869f37d8e48f3911eb70f38a994feaa8f8380008 , < 7c34f91305292083253df6a9f6c8ede02d4ccaea (git) Affected: 869f37d8e48f3911eb70f38a994feaa8f8380008 , < ddddd8271359961e403d11c90c9ba9fc38914f7e (git) Affected: 869f37d8e48f3911eb70f38a994feaa8f8380008 , < 9e5da2379f968a3ea5a6e38921ab6201576466dc (git) Affected: 869f37d8e48f3911eb70f38a994feaa8f8380008 , < 573810f61bcd6b6815e2ff53bbdd2b9c9d747176 (git) Affected: 869f37d8e48f3911eb70f38a994feaa8f8380008 , < 66eba0ffce3b7e11449946b4cbbef8ea36112f56 (git)
Linux	Linux	Affected: 2.6.20 Unaffected: 0 , < 2.6.20 (semver) Unaffected: 5.10.259 , ≤ 5.10.* (semver) Unaffected: 5.15.210 , ≤ 5.15.* (semver) Unaffected: 6.1.176 , ≤ 6.1.* (semver) Unaffected: 6.6.143 , ≤ 6.6.* (semver) Unaffected: 6.12.94 , ≤ 6.12.* (semver) Unaffected: 6.18.36 , ≤ 6.18.* (semver) Unaffected: 7.0.13 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nf_conntrack_irc.c"
          ],
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          "vendor": "Linux",
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            },
            {
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            },
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          "versions": [
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              "status": "affected",
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            },
            {
              "lessThan": "2.6.20",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.259",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.210",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.176",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.6.143",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.94",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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    "datePublished": "2026-06-25T08:39:54.511Z",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-3J2M-3XQ8-9948

CVE-2026-53268 (GCVE-0-2026-53268)

Tags

Sightings

Nomenclature