Linux Kernel up to 6.3.3 uninitialized pointer

CVSS Meta Temp Score
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.3.3. The impacted element is an unknown function. Such manipulation leads to uninitialized pointer. This vulnerability is documented as CVE-2023-53715. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.3.3. It has been rated as critical. Affected by this issue is an unknown function. The manipulation with an unknown input leads to a uninitialized pointer vulnerability. Using CWE to declare the problem leads to CWE-824. The product accesses or uses a pointer that has not been initialized. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: cfg80211: Pass the PMK in binary instead of hex Apparently the hex passphrase mechanism does not work on newer chips/firmware (e.g. BCM4387). It seems there was a simple way of passing it in binary all along, so use that and avoid the hexification. OpenBSD has been doing it like this from the beginning, so this should work on all chips. Also clear the structure before setting the PMK. This was leaking uninitialized stack contents to the device.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2023-53715 since 10/22/2025. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 02/28/2026).

The vulnerability scanner Nessus provides a plugin with the ID 276910 (SUSE SLES12 Security Update : kernel (SUSE-SU-2025:4189-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.14.316, 4.19.284, 5.4.244, 5.10.181, 5.15.113, 6.1.30 or 6.3.4 eliminates this vulnerability. Applying the patch 1687845eb8f37360a9ee849a3587ab659b090773/2bc34facb90ceeff6f8c17d2006575a6d07c3825/56c7e9c39bd54fd753c0c4b1ed10278cbd3a5f02/4e8dc0e5c7636efaadbd7e488acd34b4291c0431/e242c66f7ecfe8f5b6eb308f4ea464fd8589c866/f8a6c53ff1d91acd5a20eb627edbffd816eb9a4e/2fa3a5226b05e0a797c68b9609dcebe0cd236b27/89b89e52153fda2733562776c7c9d9d3ebf8dd6d 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 (276910) and CERT Bund (WID-SEC-2025-2394). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Red Hat Enterprise Linux
  • SUSE Linux
  • Oracle Linux
  • Open Source Linux Kernel
  • Dell NetWorker

Productinfo

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Vendor

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.6

VulDB Base Score: 8.0
VulDB Temp Score: 7.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 276910
Nessus Name: SUSE SLES12 Security Update : kernel (SUSE-SU-2025:4189-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 4.14.316/4.19.284/5.4.244/5.10.181/5.15.113/6.1.30/6.3.4
Patch: 1687845eb8f37360a9ee849a3587ab659b090773/2bc34facb90ceeff6f8c17d2006575a6d07c3825/56c7e9c39bd54fd753c0c4b1ed10278cbd3a5f02/4e8dc0e5c7636efaadbd7e488acd34b4291c0431/e242c66f7ecfe8f5b6eb308f4ea464fd8589c866/f8a6c53ff1d91acd5a20eb627edbffd816eb9a4e/2fa3a5226b05e0a797c68b9609dcebe0cd236b27/89b89e52153fda2733562776c7c9d9d3ebf8dd6d

Timelineinfo

10/22/2025 Advisory disclosed
10/22/2025 +0 days CVE reserved
10/22/2025 +0 days VulDB entry created
02/28/2026 +129 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-53715 (🔒)
GCVE (CVE): GCVE-0-2023-53715
GCVE (VulDB): GCVE-100-329336
CERT Bund: WID-SEC-2025-2394 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 10/22/2025 16:33
Updated: 02/28/2026 13:09
Changes: 10/22/2025 16:33 (57), 11/28/2025 02:28 (2), 01/02/2026 06:45 (7), 02/28/2026 13:09 (1)
Complete: 🔍
Cache ID: 216::103

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