Vulnerability-Lookup

GHSA-XJFC-F2RJ-H2HM

Vulnerability from github – Published: 2026-04-22 15:31 – Updated: 2026-04-22 15:31

Details

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

xfrm: iptfs: only publish mode_data after clone setup

iptfs_clone_state() stores x->mode_data before allocating the reorder window. If that allocation fails, the code frees the cloned state and returns -ENOMEM, leaving x->mode_data pointing at freed memory.

The xfrm clone unwind later runs destroy_state() through x->mode_data, so the failed clone path tears down IPTFS state that clone_state() already freed.

Keep the cloned IPTFS state private until all allocations succeed so failed clones leave x->mode_data unset. The destroy path already handles a NULL mode_data pointer.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-31471"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-22T14:16:43Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: iptfs: only publish mode_data after clone setup\n\niptfs_clone_state() stores x-\u003emode_data before allocating the reorder\nwindow. If that allocation fails, the code frees the cloned state and\nreturns -ENOMEM, leaving x-\u003emode_data pointing at freed memory.\n\nThe xfrm clone unwind later runs destroy_state() through x-\u003emode_data,\nso the failed clone path tears down IPTFS state that clone_state()\nalready freed.\n\nKeep the cloned IPTFS state private until all allocations succeed so\nfailed clones leave x-\u003emode_data unset. The destroy path already\nhandles a NULL mode_data pointer.",
  "id": "GHSA-xjfc-f2rj-h2hm",
  "modified": "2026-04-22T15:31:42Z",
  "published": "2026-04-22T15:31:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31471"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/371a43c4ac70cac0de9f9b1fc5b1660b9565b9f1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5784a1e2889c9525a8f036cb586930e232170bf7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d849a2f7309fc0616e79d13b008b0a47e0458b6e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-31471 (GCVE-0-2026-31471)

Vulnerability from cvelistv5 – Published: 2026-04-22 13:53 – Updated: 2026-04-27 14:03

Title

xfrm: iptfs: only publish mode_data after clone setup

Summary

In the Linux kernel, the following vulnerability has been resolved: xfrm: iptfs: only publish mode_data after clone setup iptfs_clone_state() stores x->mode_data before allocating the reorder window. If that allocation fails, the code frees the cloned state and returns -ENOMEM, leaving x->mode_data pointing at freed memory. The xfrm clone unwind later runs destroy_state() through x->mode_data, so the failed clone path tears down IPTFS state that clone_state() already freed. Keep the cloned IPTFS state private until all allocations succeed so failed clones leave x->mode_data unset. The destroy path already handles a NULL mode_data pointer.

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/371a43c4ac70cac0d…
	https://git.kernel.org/stable/c/5784a1e2889c9525a…
	https://git.kernel.org/stable/c/d849a2f7309fc0616…

Impacted products

Vendor

Product

Version

Linux

Affected: 6be02e3e4f376fea468846c8562655ca5ee18204 , < 371a43c4ac70cac0de9f9b1fc5b1660b9565b9f1 (git)
Affected: 6be02e3e4f376fea468846c8562655ca5ee18204 , < 5784a1e2889c9525a8f036cb586930e232170bf7 (git)
Affected: 6be02e3e4f376fea468846c8562655ca5ee18204 , < d849a2f7309fc0616e79d13b008b0a47e0458b6e (git)

Linux

Affected: 6.14
Unaffected: 0 , < 6.14 (semver)
Unaffected: 6.18.21 , ≤ 6.18.* (semver)
Unaffected: 6.19.11 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/xfrm/xfrm_iptfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "371a43c4ac70cac0de9f9b1fc5b1660b9565b9f1",
              "status": "affected",
              "version": "6be02e3e4f376fea468846c8562655ca5ee18204",
              "versionType": "git"
            },
            {
              "lessThan": "5784a1e2889c9525a8f036cb586930e232170bf7",
              "status": "affected",
              "version": "6be02e3e4f376fea468846c8562655ca5ee18204",
              "versionType": "git"
            },
            {
              "lessThan": "d849a2f7309fc0616e79d13b008b0a47e0458b6e",
              "status": "affected",
              "version": "6be02e3e4f376fea468846c8562655ca5ee18204",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/xfrm/xfrm_iptfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.14"
            },
            {
              "lessThan": "6.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.21",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.21",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.11",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: iptfs: only publish mode_data after clone setup\n\niptfs_clone_state() stores x-\u003emode_data before allocating the reorder\nwindow. If that allocation fails, the code frees the cloned state and\nreturns -ENOMEM, leaving x-\u003emode_data pointing at freed memory.\n\nThe xfrm clone unwind later runs destroy_state() through x-\u003emode_data,\nso the failed clone path tears down IPTFS state that clone_state()\nalready freed.\n\nKeep the cloned IPTFS state private until all allocations succeed so\nfailed clones leave x-\u003emode_data unset. The destroy path already\nhandles a NULL mode_data pointer."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-27T14:03:26.006Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/371a43c4ac70cac0de9f9b1fc5b1660b9565b9f1"
        },
        {
          "url": "https://git.kernel.org/stable/c/5784a1e2889c9525a8f036cb586930e232170bf7"
        },
        {
          "url": "https://git.kernel.org/stable/c/d849a2f7309fc0616e79d13b008b0a47e0458b6e"
        }
      ],
      "title": "xfrm: iptfs: only publish mode_data after clone setup",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31471",
    "datePublished": "2026-04-22T13:53:59.595Z",
    "dateReserved": "2026-03-09T15:48:24.098Z",
    "dateUpdated": "2026-04-27T14:03:26.006Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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-XJFC-F2RJ-H2HM

CVE-2026-31471 (GCVE-0-2026-31471)

Tags

Sightings

Nomenclature