Description
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.
Published: 2025-10-07
Score: 5.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Ubuntu USN Ubuntu USN USN-8162-1 Linux kernel (NVIDIA Tegra) vulnerabilities
Ubuntu USN Ubuntu USN USN-8180-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8180-2 Linux kernel (FIPS) vulnerabilities
Ubuntu USN Ubuntu USN USN-8186-1 Linux kernel (Real-time) vulnerabilities
Ubuntu USN Ubuntu USN USN-8187-1 Linux kernel (NVIDIA) vulnerabilities
Ubuntu USN Ubuntu USN USN-8188-1 Linux kernel (HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-8180-3 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-8180-4 Linux kernel (Azure FIPS) vulnerabilities
Ubuntu USN Ubuntu USN USN-8180-5 Linux kernel (IBM) vulnerabilities
Ubuntu USN Ubuntu USN USN-8243-1 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-8180-6 Linux kernel (Raspberry Pi) vulnerabilities
History

Fri, 06 Feb 2026 16:45:00 +0000


Tue, 03 Feb 2026 20:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-401
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Wed, 08 Oct 2025 13:45:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Wed, 08 Oct 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low


Tue, 07 Oct 2025 15:30:00 +0000

Type Values Removed Values Added
Description 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.
Title ext4: fix memory leaks in ext4_fname_{setup_filename,prepare_lookup}
References

Subscriptions

Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-05-11T19:49:29.602Z

Reserved: 2025-10-07T15:16:59.662Z

Link: CVE-2023-53662

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2025-10-07T16:15:49.927

Modified: 2026-02-06T17:16:13.520

Link: CVE-2023-53662

cve-icon Redhat

Severity : Low

Publid Date: 2025-10-07T00:00:00Z

Links: CVE-2023-53662 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-10-08T13:36:52Z

Weaknesses