Vulnerability-Lookup

GHSA-HRVW-RFGX-8G4M

Vulnerability from github – Published: 2024-09-13 06:30 – Updated: 2024-09-19 18:30

Details

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

erofs: fix out-of-bound access when z_erofs_gbuf_growsize() partially fails

If z_erofs_gbuf_growsize() partially fails on a global buffer due to memory allocation failure or fault injection (as reported by syzbot [1]), new pages need to be freed by comparing to the existing pages to avoid memory leaks.

However, the old gbuf->pages[] array may not be large enough, which can lead to null-ptr-deref or out-of-bound access.

Fix this by checking against gbuf->nrpages in advance.

[1] https://lore.kernel.org/r/000000000000f7b96e062018c6e3@google.com

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-2024-46688"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-09-13T06:15:13Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: fix out-of-bound access when z_erofs_gbuf_growsize() partially fails\n\nIf z_erofs_gbuf_growsize() partially fails on a global buffer due to\nmemory allocation failure or fault injection (as reported by syzbot [1]),\nnew pages need to be freed by comparing to the existing pages to avoid\nmemory leaks.\n\nHowever, the old gbuf-\u003epages[] array may not be large enough, which can\nlead to null-ptr-deref or out-of-bound access.\n\nFix this by checking against gbuf-\u003enrpages in advance.\n\n[1] https://lore.kernel.org/r/000000000000f7b96e062018c6e3@google.com",
  "id": "GHSA-hrvw-rfgx-8g4m",
  "modified": "2024-09-19T18:30:51Z",
  "published": "2024-09-13T06:30:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-46688"
    },
    {
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      "url": "https://git.kernel.org/stable/c/0005e01e1e875c5e27130c5e2ed0189749d1e08a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/49c0e081998008cde0c872c0ff9affa1ece4b878"
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  "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-2024-46688 (GCVE-0-2024-46688)

Vulnerability from cvelistv5 – Published: 2024-09-13 05:29 – Updated: 2026-05-11 20:34

Title

erofs: fix out-of-bound access when z_erofs_gbuf_growsize() partially fails

Summary

In the Linux kernel, the following vulnerability has been resolved: erofs: fix out-of-bound access when z_erofs_gbuf_growsize() partially fails If z_erofs_gbuf_growsize() partially fails on a global buffer due to memory allocation failure or fault injection (as reported by syzbot [1]), new pages need to be freed by comparing to the existing pages to avoid memory leaks. However, the old gbuf->pages[] array may not be large enough, which can lead to null-ptr-deref or out-of-bound access. Fix this by checking against gbuf->nrpages in advance. [1] https://lore.kernel.org/r/000000000000f7b96e062018c6e3@google.com

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-29 15:07 UTC

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/49c0e081998008cde…
https://git.kernel.org/stable/c/0005e01e1e875c5e2…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d6db47e571dcaecaeaafa8840d00ae849ae3907b , < 49c0e081998008cde0c872c0ff9affa1ece4b878 (git) Affected: d6db47e571dcaecaeaafa8840d00ae849ae3907b , < 0005e01e1e875c5e27130c5e2ed0189749d1e08a (git)
Linux	Linux	Affected: 6.10 Unaffected: 0 , < 6.10 (semver) Unaffected: 6.10.8 , ≤ 6.10.* (semver) Unaffected: 6.11 , ≤ * (original_commit_for_fix)

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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.

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