Linux Kernel up to 6.4.6 udf uninitialized pointer

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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Linux Kernel up to 6.4.6. This impacts an unknown function of the component udf. The manipulation results in uninitialized pointer. This vulnerability is known as CVE-2023-53165. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.4.6. It has been classified as critical. Affected is an unknown part of the component udf. The manipulation with an unknown input leads to a uninitialized pointer vulnerability. CWE is classifying the issue as CWE-824. The product accesses or uses a pointer that has not been initialized. The impact remains unknown. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: udf: Fix uninitialized array access for some pathnames For filenames that begin with . and are between 2 and 5 characters long, UDF charset conversion code would read uninitialized memory in the output buffer. The only practical impact is that the name may be prepended a "unification hash" when it is not actually needed but still it is good to fix this.

The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2023-53165 since 09/15/2025. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 284771 (EulerOS 2.0 SP10 : kernel (EulerOS-SA-2026-1050)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.14.324, 4.19.293, 5.4.255, 5.10.192, 5.15.123, 6.1.42 or 6.4.7 eliminates this vulnerability. Applying the patch 008ae78d1e12efa904dc819b1ec83e2bca6b2c56/b37f998d357102e8eb0f8eeb33f03fff22e49cbf/3f1368af47acf4d0b2a5fb0d2c0d6919d2234b6d/4503f6fc95d6dee85fb2c54785848799e192c51c/985f9666698960dfc87a106d6314203fa90fda75/a6824149809395dfbb5bc36bc7057cc3cb84e56d/4d50988da0db167aed6f38685145cb5cd526c4f8 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (284771) and CERT Bund (WID-SEC-2025-2053). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • IBM QRadar SIEM
  • SUSE openSUSE
  • Open Source Linux Kernel
  • RESF Rocky Linux
  • Dell Secure Connect Gateway
  • F5 F5OS

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Uninitialized pointer
CWE: CWE-824 / CWE-908
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 284771
Nessus Name: EulerOS 2.0 SP10 : kernel (EulerOS-SA-2026-1050)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 4.14.324/4.19.293/5.4.255/5.10.192/5.15.123/6.1.42/6.4.7
Patch: 008ae78d1e12efa904dc819b1ec83e2bca6b2c56/b37f998d357102e8eb0f8eeb33f03fff22e49cbf/3f1368af47acf4d0b2a5fb0d2c0d6919d2234b6d/4503f6fc95d6dee85fb2c54785848799e192c51c/985f9666698960dfc87a106d6314203fa90fda75/a6824149809395dfbb5bc36bc7057cc3cb84e56d/4d50988da0db167aed6f38685145cb5cd526c4f8

Timelineinfo

09/15/2025 Advisory disclosed
09/15/2025 +0 days CVE reserved
09/15/2025 +0 days VulDB entry created
01/16/2026 +123 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-53165 (🔒)
GCVE (CVE): GCVE-0-2023-53165
GCVE (VulDB): GCVE-100-323970
CERT Bund: WID-SEC-2025-2053 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 09/15/2025 16:48
Updated: 01/16/2026 02:21
Changes: 09/15/2025 16:48 (59), 11/24/2025 22:09 (10), 12/28/2025 22:33 (7), 01/10/2026 19:43 (1), 01/16/2026 02:21 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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