Vulnerability-Lookup

FKIE_CVE-2026-23391

Vulnerability from fkie_nvd - Published: 2026-03-25 11:16 - Updated: 2026-04-24 18:38

Severity ?

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_CT: drop pending enqueued packets on template removal Templates refer to objects that can go away while packets are sitting in nfqueue refer to: - helper, this can be an issue on module removal. - timeout policy, nfnetlink_cttimeout might remove it. The use of templates with zone and event cache filter are safe, since this just copies values. Flush these enqueued packets in case the template rule gets removed.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/19a230dec6bb8928e3f96387f9085cf2c79bcef9	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/55445134d42b84cb0a272e42c98d233ca65eca83	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/63b8097cea1923fe82cd598068d0796da8c015ec	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/777d02efe3d630cca4c1b63962cec17c57711325	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/cb549925875fa06dd155e49db4ac2c5044c30f9c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/cc57506dd66555899560b9c0f24e813f034e12ec	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d2d0bae0c9a2a17b6990a2966f5cdce0813d6256	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f62a218a946b19bb59abdd5361da85fa4606b96b	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	3.4
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0

JSON

To clipboard

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    },
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      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnetfilter: xt_CT: descartar paquetes pendientes encolados al eliminar la plantilla\n\nLas plantillas se refieren a objetos que pueden desaparecer mientras los paquetes est\u00e1n en nfqueue, se refieren a:\n\n- helper, esto puede ser un problema al eliminar el m\u00f3dulo.\n- pol\u00edtica de tiempo de espera, nfnetlink_cttimeout podr\u00eda eliminarla.\n\nEl uso de plantillas con filtro de cach\u00e9 de zona y eventos es seguro, ya que esto solo copia valores.\n\nVaciar estos paquetes encolados en caso de que la regla de plantilla sea eliminada."
    }
  ],
  "id": "CVE-2026-23391",
  "lastModified": "2026-04-24T18:38:57.790",
  "metrics": {
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          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
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  "vulnStatus": "Analyzed",
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}

CVE-2026-23391 (GCVE-0-2026-23391)

Vulnerability from cvelistv5 – Published: 2026-03-25 10:33 – Updated: 2026-04-18 08:58

Title

netfilter: xt_CT: drop pending enqueued packets on template removal

Summary

Severity ?

7.8 (High)


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

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/55445134d42b84cb0…
	https://git.kernel.org/stable/c/cc57506dd66555899…
	https://git.kernel.org/stable/c/d2d0bae0c9a2a17b6…
	https://git.kernel.org/stable/c/63b8097cea1923fe8…
	https://git.kernel.org/stable/c/19a230dec6bb8928e…
	https://git.kernel.org/stable/c/cb549925875fa06dd…
	https://git.kernel.org/stable/c/777d02efe3d630cca…
	https://git.kernel.org/stable/c/f62a218a946b19bb5…

Impacted products

Vendor

Product

Version

Linux

Affected: 24de58f465165298aaa8f286b2592f0163706cfe , < 55445134d42b84cb0a272e42c98d233ca65eca83 (git)
Affected: 24de58f465165298aaa8f286b2592f0163706cfe , < cc57506dd66555899560b9c0f24e813f034e12ec (git)
Affected: 24de58f465165298aaa8f286b2592f0163706cfe , < d2d0bae0c9a2a17b6990a2966f5cdce0813d6256 (git)
Affected: 24de58f465165298aaa8f286b2592f0163706cfe , < 63b8097cea1923fe82cd598068d0796da8c015ec (git)
Affected: 24de58f465165298aaa8f286b2592f0163706cfe , < 19a230dec6bb8928e3f96387f9085cf2c79bcef9 (git)
Affected: 24de58f465165298aaa8f286b2592f0163706cfe , < cb549925875fa06dd155e49db4ac2c5044c30f9c (git)
Affected: 24de58f465165298aaa8f286b2592f0163706cfe , < 777d02efe3d630cca4c1b63962cec17c57711325 (git)
Affected: 24de58f465165298aaa8f286b2592f0163706cfe , < f62a218a946b19bb59abdd5361da85fa4606b96b (git)

Linux

Affected: 3.4
Unaffected: 0 , < 3.4 (semver)
Unaffected: 5.10.253 , ≤ 5.10.* (semver)
Unaffected: 5.15.203 , ≤ 5.15.* (semver)
Unaffected: 6.1.167 , ≤ 6.1.* (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.78 , ≤ 6.12.* (semver)
Unaffected: 6.18.20 , ≤ 6.18.* (semver)
Unaffected: 6.19.10 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/xt_CT.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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              "version": "7.0",
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        }
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      "providerMetadata": {
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/f62a218a946b19bb59abdd5361da85fa4606b96b"
        }
      ],
      "title": "netfilter: xt_CT: drop pending enqueued packets on template removal",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23391",
    "datePublished": "2026-03-25T10:33:15.677Z",
    "dateReserved": "2026-01-13T15:37:46.009Z",
    "dateUpdated": "2026-04-18T08:58:26.823Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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

FKIE_CVE-2026-23391

CVE-2026-23391 (GCVE-0-2026-23391)

Tags

Sightings

Nomenclature