Linux Kernel up to 6.4.3 ttc_timer_probe memory leak

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.4.3. It has been declared as critical. Impacted is the function ttc_timer_probe. Executing a manipulation can lead to memory leak. This vulnerability is handled as CVE-2023-53725. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.4.3. This vulnerability affects the function ttc_timer_probe. The manipulation with an unknown input leads to a memory leak vulnerability. The CWE definition for the vulnerability is CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. As an impact it is known to affect availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: clocksource/drivers/cadence-ttc: Fix memory leak in ttc_timer_probe Smatch reports: drivers/clocksource/timer-cadence-ttc.c:529 ttc_timer_probe() warn: 'timer_baseaddr' from of_iomap() not released on lines: 498,508,516. timer_baseaddr may have the problem of not being released after use, I replaced it with the devm_of_iomap() function and added the clk_put() function to cleanup the "clk_ce" and "clk_cs".

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2023-53725 since 10/22/2025. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 276868 (Linux Distros Unpatched Vulnerability : CVE-2023-53725), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.19.291, 5.4.251, 5.10.188, 5.15.121, 6.1.39, 6.3.13 or 6.4.4 eliminates this vulnerability. Applying the patch e0a9cc90ea44a50d76a84f9f9bf1703d31fe45e9/54cc10a0f4b01b522e9519014200f1b33bf7e4aa/ebdff0986513a29be242aace0ef89b6c105b0bf0/289e2054eeb63c9e133960731c342eeffad218d3/919dd531ebb7514f205ae7aab87994337ebce1f6/67d7eebbc424935dec61fb352d1ccae5d16cf429/99744200f28b2cf5f50767447e51b4b4a977d145/8b5bf64c89c7100c921bd807ba39b2eb003061ab 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 (276868) and CERT Bund (WID-SEC-2025-2394). Once again VulDB remains the best source for vulnerability data.

Affected

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

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
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: 276868
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2023-53725

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 4.19.291/5.4.251/5.10.188/5.15.121/6.1.39/6.3.13/6.4.4
Patch: e0a9cc90ea44a50d76a84f9f9bf1703d31fe45e9/54cc10a0f4b01b522e9519014200f1b33bf7e4aa/ebdff0986513a29be242aace0ef89b6c105b0bf0/289e2054eeb63c9e133960731c342eeffad218d3/919dd531ebb7514f205ae7aab87994337ebce1f6/67d7eebbc424935dec61fb352d1ccae5d16cf429/99744200f28b2cf5f50767447e51b4b4a977d145/8b5bf64c89c7100c921bd807ba39b2eb003061ab

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-2023-53725 (🔒)
GCVE (CVE): GCVE-0-2023-53725
GCVE (VulDB): GCVE-100-329356
CERT Bund: WID-SEC-2025-2394 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 10/22/2025 17:50
Updated: 02/28/2026 13:15
Changes: 10/22/2025 17:50 (59), 11/28/2025 03:20 (2), 01/02/2026 07:53 (7), 02/28/2026 13:15 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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