Vulnerability-Lookup

FKIE_CVE-2026-31471

Vulnerability from fkie_nvd - Published: 2026-04-22 14:16 - Updated: 2026-05-06 21:37

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: 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.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/371a43c4ac70cac0de9f9b1fc5b1660b9565b9f1	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5784a1e2889c9525a8f036cb586930e232170bf7	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d849a2f7309fc0616e79d13b008b0a47e0458b6e	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
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

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "versionEndExcluding": "6.18.21",
              "versionStartIncluding": "6.14",
              "vulnerable": true
            },
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              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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  "descriptions": [
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      "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."
    }
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  "id": "CVE-2026-31471",
  "lastModified": "2026-05-06T21:37:47.057",
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          "attackVector": "LOCAL",
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          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
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        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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  "vulnStatus": "Analyzed",
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      "type": "Primary"
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  ]
}

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

Vulnerability from cvelistv5 – Published: 2026-04-22 13:53 – Updated: 2026-05-11 22:09

Title

xfrm: iptfs: only publish mode_data after clone setup

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

3 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

2 products

Vendor	Product	Version
Linux	Linux	Affected: 6be02e3e4f376fea468846c8562655ca5ee18204 , < 371a43c4ac70cac0de9f9b1fc5b1660b9565b9f1 (git) Affected: 6be02e3e4f376fea468846c8562655ca5ee18204 , < 5784a1e2889c9525a8f036cb586930e232170bf7 (git) Affected: 6be02e3e4f376fea468846c8562655ca5ee18204 , < d849a2f7309fc0616e79d13b008b0a47e0458b6e (git)
Linux	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)

Show details on NVD website

JSON

To clipboard

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        {
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          "programFiles": [
            "net/xfrm/xfrm_iptfs.c"
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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

FKIE_CVE-2026-31471

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

Tags

Sightings

Nomenclature