Vulnerability-Lookup

GHSA-7X54-V488-56PJ

Vulnerability from github – Published: 2024-07-29 15:30 – Updated: 2025-11-04 00:31

Details

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

mm: prevent derefencing NULL ptr in pfn_section_valid()

Commit 5ec8e8ea8b77 ("mm/sparsemem: fix race in accessing memory_section->usage") changed pfn_section_valid() to add a READ_ONCE() call around "ms->usage" to fix a race with section_deactivate() where ms->usage can be cleared. The READ_ONCE() call, by itself, is not enough to prevent NULL pointer dereference. We need to check its value before dereferencing it.

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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  "aliases": [
    "CVE-2024-41055"
  ],
  "database_specific": {
    "cwe_ids": [
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    "github_reviewed_at": null,
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    "severity": "MODERATE"
  },
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  "id": "GHSA-7x54-v488-56pj",
  "modified": "2025-11-04T00:31:00Z",
  "published": "2024-07-29T15:30:43Z",
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CVE-2024-41055 (GCVE-0-2024-41055)

Vulnerability from cvelistv5 – Published: 2024-07-29 14:32 – Updated: 2026-05-23 15:51

Title

mm: prevent derefencing NULL ptr in pfn_section_valid()

Summary

In the Linux kernel, the following vulnerability has been resolved: mm: prevent derefencing NULL ptr in pfn_section_valid() Commit 5ec8e8ea8b77 ("mm/sparsemem: fix race in accessing memory_section->usage") changed pfn_section_valid() to add a READ_ONCE() call around "ms->usage" to fix a race with section_deactivate() where ms->usage can be cleared. The READ_ONCE() call, by itself, is not enough to prevent NULL pointer dereference. We need to check its value before dereferencing it.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 16:22 UTC

Assigner

Linux mitre root Scorecard

References

7 references

URL	Tags
https://git.kernel.org/stable/c/0100aeb8a12d51950…
https://git.kernel.org/stable/c/bc17f2377818dca64…
https://git.kernel.org/stable/c/941e816185661bf2b…
https://git.kernel.org/stable/c/797323d1cf92d09b7…
https://git.kernel.org/stable/c/adccdf702b4ea913d…
https://git.kernel.org/stable/c/82f0b6f041fad768c…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 90ad17575d26874287271127d43ef3c2af876cea , < 0100aeb8a12d51950418e685f879cc80cb8e5982 (git) Affected: b448de2459b6d62a53892487ab18b7d823ff0529 , < bc17f2377818dca643a74499c3f5333500c90503 (git) Affected: 68ed9e33324021e9d6b798e9db00ca3093d2012a , < 941e816185661bf2b44b488565d09444ae316509 (git) Affected: 70064241f2229f7ba7b9599a98f68d9142e81a97 , < 797323d1cf92d09b7a017cfec576d9babf99cde7 (git) Affected: 5ec8e8ea8b7783fab150cf86404fc38cb4db8800 , < adccdf702b4ea913ded5ff512239e382d7473b63 (git) Affected: 5ec8e8ea8b7783fab150cf86404fc38cb4db8800 , < 82f0b6f041fad768c28b4ad05a683065412c226e (git) Affected: 3a01daace71b521563c38bbbf874e14c3e58adb7 (git) Affected: 5.10.210 , < 5.10.222 (semver) Affected: 5.15.149 , < 5.15.163 (semver) Affected: 6.1.76 , < 6.1.100 (semver) Affected: 6.6.15 , < 6.6.41 (semver) Affected: 6.7.3 , < 6.8 (semver)
Linux	Linux	Affected: 6.8 Unaffected: 0 , < 6.8 (semver) Unaffected: 5.10.222 , ≤ 5.10.* (semver) Unaffected: 5.15.163 , ≤ 5.15.* (semver) Unaffected: 6.1.100 , ≤ 6.1.* (semver) Unaffected: 6.6.41 , ≤ 6.6.* (semver) Unaffected: 6.9.10 , ≤ 6.9.* (semver) Unaffected: 6.10 , ≤ * (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.

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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GHSA-7X54-V488-56PJ

CVE-2024-41055 (GCVE-0-2024-41055)

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