Vulnerability-Lookup

GHSA-52H9-53CV-VM4J

Vulnerability from github – Published: 2024-04-26 15:30 – Updated: 2025-01-27 15:30

Details

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

aio: fix mremap after fork null-deref

Commit e4a0d3e720e7 ("aio: Make it possible to remap aio ring") introduced a null-deref if mremap is called on an old aio mapping after fork as mm->ioctx_table will be set to NULL.

[jmoyer@redhat.com: fix 80 column issue]

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-2023-52646"
  ],
  "database_specific": {
    "cwe_ids": [
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    "github_reviewed_at": null,
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  "id": "GHSA-52h9-53cv-vm4j",
  "modified": "2025-01-27T15:30:56Z",
  "published": "2024-04-26T15:30:30Z",
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CVE-2023-52646 (GCVE-0-2023-52646)

Vulnerability from cvelistv5 – Published: 2024-04-26 12:19 – Updated: 2026-05-11 19:30

Title

aio: fix mremap after fork null-deref

Summary

In the Linux kernel, the following vulnerability has been resolved: aio: fix mremap after fork null-deref Commit e4a0d3e720e7 ("aio: Make it possible to remap aio ring") introduced a null-deref if mremap is called on an old aio mapping after fork as mm->ioctx_table will be set to NULL. [jmoyer@redhat.com: fix 80 column issue]

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-07-17 14:11 UTC

Assigner

Linux CNA under the mitre root

CNA scorecard D 54/100 over 6618 records in the last 180 days details

References

7 references

URL	Tags
https://git.kernel.org/stable/c/808f1e4b5723ae4ed…
https://git.kernel.org/stable/c/d8dca1bfe9adcae38…
https://git.kernel.org/stable/c/4326d0080f7e84fba…
https://git.kernel.org/stable/c/c261f798f7baa8080…
https://git.kernel.org/stable/c/178993157e8c50aef…
https://git.kernel.org/stable/c/af126acf01a12bdb0…
https://git.kernel.org/stable/c/81e9d6f8647650a7b…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: e4a0d3e720e7e508749c1439b5ba3aff56c92976 , < 808f1e4b5723ae4eda724d2ad6f6638905eefd95 (git) Affected: e4a0d3e720e7e508749c1439b5ba3aff56c92976 , < d8dca1bfe9adcae38b35add64977818c0c13dd22 (git) Affected: e4a0d3e720e7e508749c1439b5ba3aff56c92976 , < 4326d0080f7e84fba775da41d158f46cf9d3f1c2 (git) Affected: e4a0d3e720e7e508749c1439b5ba3aff56c92976 , < c261f798f7baa8080cf0214081d43d5f86bb073f (git) Affected: e4a0d3e720e7e508749c1439b5ba3aff56c92976 , < 178993157e8c50aef7f35d7d6d3b44bb428199e1 (git) Affected: e4a0d3e720e7e508749c1439b5ba3aff56c92976 , < af126acf01a12bdb04986fd26fc2eb3b40249e0d (git) Affected: e4a0d3e720e7e508749c1439b5ba3aff56c92976 , < 81e9d6f8647650a7bead74c5f926e29970e834d1 (git)
Linux	Linux	Affected: 3.19 Unaffected: 0 , < 3.19 (semver) Unaffected: 4.14.306 , ≤ 4.14.* (semver) Unaffected: 4.19.273 , ≤ 4.19.* (semver) Unaffected: 5.4.232 , ≤ 5.4.* (semver) Unaffected: 5.10.169 , ≤ 5.10.* (semver) Unaffected: 5.15.95 , ≤ 5.15.* (semver) Unaffected: 6.1.13 , ≤ 6.1.* (semver) Unaffected: 6.2 , ≤ * (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-52H9-53CV-VM4J

CVE-2023-52646 (GCVE-0-2023-52646)

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