Vulnerability-Lookup

GHSA-C8R4-J2Q4-MJGJ

Vulnerability from github – Published: 2025-05-01 15:31 – Updated: 2025-05-07 15:31

Details

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

bpftool: Fix NULL pointer dereference when pin {PROG, MAP, LINK} without FILE

When using bpftool to pin {PROG, MAP, LINK} without FILE, segmentation fault will occur. The reson is that the lack of FILE will cause strlen to trigger NULL pointer dereference. The corresponding stacktrace is shown below:

do_pin do_pin_any do_pin_fd mount_bpffs_for_pin strlen(name) <- NULL pointer dereference

Fix it by adding validation to the common process.

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49875"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-01T15:16:12Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpftool: Fix NULL pointer dereference when pin {PROG, MAP, LINK} without FILE\n\nWhen using bpftool to pin {PROG, MAP, LINK} without FILE,\nsegmentation fault will occur. The reson is that the lack\nof FILE will cause strlen to trigger NULL pointer dereference.\nThe corresponding stacktrace is shown below:\n\ndo_pin\n  do_pin_any\n    do_pin_fd\n      mount_bpffs_for_pin\n        strlen(name) \u003c- NULL pointer dereference\n\nFix it by adding validation to the common process.",
  "id": "GHSA-c8r4-j2q4-mjgj",
  "modified": "2025-05-07T15:31:25Z",
  "published": "2025-05-01T15:31:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49875"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/34de8e6e0e1f66e431abf4123934a2581cb5f133"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6dcdd1b68b7f9333d48d48fc77b75e7f235f6a4a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8c80b2fca4112d724dde477aed13f7b0510a2792"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/da5161ba94c5e9182c301dd4f09c94f715c068bd"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-49875 (GCVE-0-2022-49875)

Vulnerability from cvelistv5 – Published: 2025-05-01 14:10 – Updated: 2026-05-11 19:08

Title

bpftool: Fix NULL pointer dereference when pin {PROG, MAP, LINK} without FILE

Summary

In the Linux kernel, the following vulnerability has been resolved: bpftool: Fix NULL pointer dereference when pin {PROG, MAP, LINK} without FILE When using bpftool to pin {PROG, MAP, LINK} without FILE, segmentation fault will occur. The reson is that the lack of FILE will cause strlen to trigger NULL pointer dereference. The corresponding stacktrace is shown below: do_pin do_pin_any do_pin_fd mount_bpffs_for_pin strlen(name) <- NULL pointer dereference Fix it by adding validation to the common process.

Severity

5.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-10-01 16:03 UTC

CWE

CWE-476 - NULL Pointer Dereference

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/8c80b2fca4112d724…
https://git.kernel.org/stable/c/6dcdd1b68b7f9333d…
https://git.kernel.org/stable/c/da5161ba94c5e9182…
https://git.kernel.org/stable/c/34de8e6e0e1f66e43…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 75a1e792c335b5c6d7fdb1014da47aeb64c5944f , < 8c80b2fca4112d724dde477aed13f7b0510a2792 (git) Affected: 75a1e792c335b5c6d7fdb1014da47aeb64c5944f , < 6dcdd1b68b7f9333d48d48fc77b75e7f235f6a4a (git) Affected: 75a1e792c335b5c6d7fdb1014da47aeb64c5944f , < da5161ba94c5e9182c301dd4f09c94f715c068bd (git) Affected: 75a1e792c335b5c6d7fdb1014da47aeb64c5944f , < 34de8e6e0e1f66e431abf4123934a2581cb5f133 (git)
Linux	Linux	Affected: 5.7 Unaffected: 0 , < 5.7 (semver) Unaffected: 5.10.155 , ≤ 5.10.* (semver) Unaffected: 5.15.79 , ≤ 5.15.* (semver) Unaffected: 6.0.9 , ≤ 6.0.* (semver) Unaffected: 6.1 , ≤ * (original_commit_for_fix)

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JSON

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        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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          "programFiles": [
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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.
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