Vulnerability-Lookup

GHSA-WPGR-4VVJ-XP76

Vulnerability from github – Published: 2025-12-16 15:30 – Updated: 2025-12-16 15:30

Details

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

udp_tunnel: use netdev_warn() instead of netdev_WARN()

netdev_WARN() uses WARN/WARN_ON to print a backtrace along with file and line information. In this case, udp_tunnel_nic_register() returning an error is just a failed operation, not a kernel bug.

udp_tunnel_nic_register() can fail due to a memory allocation failure (kzalloc() or udp_tunnel_nic_alloc()). This is a normal runtime error and not a kernel bug.

Replace netdev_WARN() with netdev_warn() accordingly.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-68191"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-16T14:15:51Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nudp_tunnel: use netdev_warn() instead of netdev_WARN()\n\nnetdev_WARN() uses WARN/WARN_ON to print a backtrace along with\nfile and line information. In this case, udp_tunnel_nic_register()\nreturning an error is just a failed operation, not a kernel bug.\n\nudp_tunnel_nic_register() can fail due to a memory allocation\nfailure (kzalloc() or udp_tunnel_nic_alloc()).\nThis is a normal runtime error and not a kernel bug.\n\nReplace netdev_WARN() with netdev_warn() accordingly.",
  "id": "GHSA-wpgr-4vvj-xp76",
  "modified": "2025-12-16T15:30:45Z",
  "published": "2025-12-16T15:30:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68191"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/087f1ed450dc6e7e49ffbbbe5b78be1218c6d5e0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3c3b148bf8384c8a787753cf20abde1c5731f97f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/45e4e4a8772fa1c5f6f38e82b732b3a9d8137af4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/51b3033088f0420b19027e3d54cd989b6ebd987e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7758ec35ff3e9a31558eda4f0f9eb0ddfa78a8ba"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c018a87942bf1607aeebf8dba5a210ca9a09a0fd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dc2f650f7e6857bf384069c1a56b2937a1ee370d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-68191 (GCVE-0-2025-68191)

Vulnerability from cvelistv5 – Published: 2025-12-16 13:43 – Updated: 2026-05-11 21:48

Title

udp_tunnel: use netdev_warn() instead of netdev_WARN()

Summary

In the Linux kernel, the following vulnerability has been resolved: udp_tunnel: use netdev_warn() instead of netdev_WARN() netdev_WARN() uses WARN/WARN_ON to print a backtrace along with file and line information. In this case, udp_tunnel_nic_register() returning an error is just a failed operation, not a kernel bug. udp_tunnel_nic_register() can fail due to a memory allocation failure (kzalloc() or udp_tunnel_nic_alloc()). This is a normal runtime error and not a kernel bug. Replace netdev_WARN() with netdev_warn() accordingly.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

7 references

URL	Tags
https://git.kernel.org/stable/c/087f1ed450dc6e7e4…
https://git.kernel.org/stable/c/45e4e4a8772fa1c5f…
https://git.kernel.org/stable/c/7758ec35ff3e9a315…
https://git.kernel.org/stable/c/c018a87942bf1607a…
https://git.kernel.org/stable/c/51b3033088f0420b1…
https://git.kernel.org/stable/c/3c3b148bf8384c8a7…
https://git.kernel.org/stable/c/dc2f650f7e6857bf3…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: cc4e3835eff474aa274d6e1d18f69d9d296d3b76 , < 087f1ed450dc6e7e49ffbbbe5b78be1218c6d5e0 (git) Affected: cc4e3835eff474aa274d6e1d18f69d9d296d3b76 , < 45e4e4a8772fa1c5f6f38e82b732b3a9d8137af4 (git) Affected: cc4e3835eff474aa274d6e1d18f69d9d296d3b76 , < 7758ec35ff3e9a31558eda4f0f9eb0ddfa78a8ba (git) Affected: cc4e3835eff474aa274d6e1d18f69d9d296d3b76 , < c018a87942bf1607aeebf8dba5a210ca9a09a0fd (git) Affected: cc4e3835eff474aa274d6e1d18f69d9d296d3b76 , < 51b3033088f0420b19027e3d54cd989b6ebd987e (git) Affected: cc4e3835eff474aa274d6e1d18f69d9d296d3b76 , < 3c3b148bf8384c8a787753cf20abde1c5731f97f (git) Affected: cc4e3835eff474aa274d6e1d18f69d9d296d3b76 , < dc2f650f7e6857bf384069c1a56b2937a1ee370d (git)
Linux	Linux	Affected: 5.9 Unaffected: 0 , < 5.9 (semver) Unaffected: 5.10.247 , ≤ 5.10.* (semver) Unaffected: 5.15.197 , ≤ 5.15.* (semver) Unaffected: 6.1.159 , ≤ 6.1.* (semver) Unaffected: 6.6.117 , ≤ 6.6.* (semver) Unaffected: 6.12.58 , ≤ 6.12.* (semver) Unaffected: 6.17.8 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix)

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            "net/ipv4/udp_tunnel_nic.c"
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        }
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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.