Vulnerability-Lookup

CVE-2023-53662 (GCVE-0-2023-53662)

Vulnerability from cvelistv5 – Published: 2025-10-07 15:21 – Updated: 2026-05-11 19:49

Title

ext4: fix memory leaks in ext4_fname_{setup_filename,prepare_lookup}

Summary

In the Linux kernel, the following vulnerability has been resolved: ext4: fix memory leaks in ext4_fname_{setup_filename,prepare_lookup} If the filename casefolding fails, we'll be leaking memory from the fscrypt_name struct, namely from the 'crypto_buf.name' member. Make sure we free it in the error path on both ext4_fname_setup_filename() and ext4_fname_prepare_lookup() functions.

Severity

5.5 (Medium)


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

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/98fc9c2cc45cfcb56…
https://git.kernel.org/stable/c/1fb3f1bbfdb511034…
https://git.kernel.org/stable/c/36daf050be3f6f067…
https://git.kernel.org/stable/c/7ca4b085f430f3774…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 1ae98e295fa2577fb5e492200c58d10230e00e99 , < 98fc9c2cc45cfcb56961a73de3ec69b474063fc0 (git) Affected: 1ae98e295fa2577fb5e492200c58d10230e00e99 , < 1fb3f1bbfdb511034b0360dbeb0f6a8424ed2a5c (git) Affected: 1ae98e295fa2577fb5e492200c58d10230e00e99 , < 36daf050be3f6f067631dc52054de2d3b7cc849f (git) Affected: 1ae98e295fa2577fb5e492200c58d10230e00e99 , < 7ca4b085f430f3774c3838b3da569ceccd6a0177 (git)	guessed
Linux	Linux	Affected: 5.13 Unaffected: 0 , < 5.13 (semver) Unaffected: 5.15.199 , ≤ 5.15.* (semver) Unaffected: 6.1.54 , ≤ 6.1.* (semver) Unaffected: 6.5.4 , ≤ 6.5.* (semver) Unaffected: 6.6 , ≤ * (original_commit_for_fix)	guessed

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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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CVE-2023-53662 (GCVE-0-2023-53662)

Tags

Sightings

Nomenclature

Related by attack behaviour