Vulnerability-Lookup

GHSA-PV98-48F2-5VJR

Vulnerability from github – Published: 2024-03-03 00:30 – Updated: 2025-01-16 18:30

Details

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

mm: huge_memory: don't force huge page alignment on 32 bit

commit efa7df3e3bb5 ("mm: align larger anonymous mappings on THP boundaries") caused two issues [1] [2] reported on 32 bit system or compat userspace.

It doesn't make too much sense to force huge page alignment on 32 bit system due to the constrained virtual address space.

[1] https://lore.kernel.org/linux-mm/d0a136a0-4a31-46bc-adf4-2db109a61672@kernel.org/ [2] https://lore.kernel.org/linux-mm/CAJuCfpHXLdQy1a2B6xN2d7quTYwg2OoZseYPZTRpU0eHHKD-sQ@mail.gmail.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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CVE-2024-26621 (GCVE-0-2024-26621)

Vulnerability from cvelistv5 – Published: 2024-03-02 21:31 – Updated: 2026-08-05 11:26

Title

mm: huge_memory: don't force huge page alignment on 32 bit

Summary

In the Linux kernel, the following vulnerability has been resolved: mm: huge_memory: don't force huge page alignment on 32 bit commit efa7df3e3bb5 ("mm: align larger anonymous mappings on THP boundaries") caused two issues [1] [2] reported on 32 bit system or compat userspace. It doesn't make too much sense to force huge page alignment on 32 bit system due to the constrained virtual address space. [1] https://lore.kernel.org/linux-mm/d0a136a0-4a31-46bc-adf4-2db109a61672@kernel.org/ [2] https://lore.kernel.org/linux-mm/CAJuCfpHXLdQy1a2B6xN2d7quTYwg2OoZseYPZTRpU0eHHKD-sQ@mail.gmail.com/

Severity

8.2 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 15:56 UTC

Assigner

Linux mitre root

References

27 references

URL	Tags
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https://git.kernel.org/stable/c/6ea9aa8d97e656367…
https://git.kernel.org/stable/c/7432376c913381c5f…
https://git.kernel.org/stable/c/4ef9ad19e17676b9e…
https://zolutal.github.io/aslrnt/	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/08/3	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/08/5	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/08/4	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/08/6	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/08/7	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/08/8	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/09/1	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/10/5	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/10/7	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/10/8	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/11/4	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/11/5	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/11/7	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/12/3	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/13/2	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/13/7	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/15/2	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/15/1	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/16/1	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/16/2	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/29/2	x_transferred
http://www.openwall.com/lists/oss-security/2024/07/30/2	x_transferred

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1854bc6e2420472676c5c90d3d6b15f6cd640e40 , < 87632bc9ecff5ded93433bc0fca428019bdd1cfe (git) Affected: 1854bc6e2420472676c5c90d3d6b15f6cd640e40 , < 6ea9aa8d97e6563676094cb35755884173269555 (git) Affected: 1854bc6e2420472676c5c90d3d6b15f6cd640e40 , < 7432376c913381c5f24d373a87ff629bbde94b47 (git) Affected: 1854bc6e2420472676c5c90d3d6b15f6cd640e40 , < 4ef9ad19e17676b9ef071309bc62020e2373705d (git)
Linux	Linux	Affected: 5.18 Unaffected: 0 , < 5.18 (semver) Unaffected: 6.1.81 , ≤ 6.1.* (semver) Unaffected: 6.6.46 , ≤ 6.6.* (semver) Unaffected: 6.7.6 , ≤ 6.7.* (semver) Unaffected: 6.8 , ≤ * (original_commit_for_fix)

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          "url": "https://git.kernel.org/stable/c/7432376c913381c5f24d373a87ff629bbde94b47"
        },
        {
          "url": "https://git.kernel.org/stable/c/4ef9ad19e17676b9ef071309bc62020e2373705d"
        }
      ],
      "title": "mm: huge_memory: don\u0027t force huge page alignment on 32 bit",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26621",
    "datePublished": "2024-03-02T21:31:49.158Z",
    "dateReserved": "2024-02-19T14:20:24.134Z",
    "dateUpdated": "2026-08-05T11:26:19.370Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.