Linux Kernel up to 6.1.157/6.6.114/6.12.55/6.17.5 fastrpc memory leak

Summaryinfo

A vulnerability labeled as critical has been found in Linux Kernel up to 6.1.157/6.6.114/6.12.55/6.17.5. Affected is an unknown function of the component fastrpc. Executing a manipulation can lead to memory leak. This vulnerability appears as CVE-2025-68252. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.1.157/6.6.114/6.12.55/6.17.5. This vulnerability affects an unknown part of the component fastrpc. 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: misc: fastrpc: Fix dma_buf object leak in fastrpc_map_lookup In fastrpc_map_lookup, dma_buf_get is called to obtain a reference to the dma_buf for comparison purposes. However, this reference is never released when the function returns, leading to a dma_buf memory leak. Fix this by adding dma_buf_put before returning from the function, ensuring that the temporarily acquired reference is properly released regardless of whether a matching map is found. Rule: add

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2025-68252 since 12/16/2025. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 279001 (Linux Distros Unpatched Vulnerability : CVE-2025-68252), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.1.158, 6.6.115, 6.12.56 or 6.17.6 eliminates this vulnerability. Applying the patch c2fef5ebb73f3dabae6fbc571d181914ed32c483/9a297a68c3ba4a7ecb31ed52f61bd6634abb79d3/e17b13387827adce7acb19ac0f07f9bcafe0ff4c/214e81a63a9aa0be42382ef0365ba5ed32c513ab/fff111bf45cbeeb659324316d68554e35d350092 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 (279001), EUVD (EUVD-2025-203644) and CERT Bund (WID-SEC-2025-2868). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

• Debian Linux
• Amazon Linux 2
• Red Hat Enterprise Linux
• Ubuntu Linux
• SUSE Linux
• Oracle Linux
• SUSE openSUSE
• RESF Rocky Linux
• Open Source Linux Kernel

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.1.157
• 6.6.114
• 6.12.0
• 6.12.1
• 6.12.2
• 6.12.3
• 6.12.4
• 6.12.5
• 6.12.6
• 6.12.7
• 6.12.8
• 6.12.9
• 6.12.10
• 6.12.11
• 6.12.12
• 6.12.13
• 6.12.14
• 6.12.15
• 6.12.16
• 6.12.17
• 6.12.18
• 6.12.19
• 6.12.20
• 6.12.21
• 6.12.22
• 6.12.23
• 6.12.24
• 6.12.25
• 6.12.26
• 6.12.27
• 6.12.28
• 6.12.29
• 6.12.30
• 6.12.31
• 6.12.32
• 6.12.33
• 6.12.34
• 6.12.35
• 6.12.36
• 6.12.37
• 6.12.38
• 6.12.39
• 6.12.40
• 6.12.41
• 6.12.42
• 6.12.43
• 6.12.44
• 6.12.45
• 6.12.46
• 6.12.47
• 6.12.48
• 6.12.49
• 6.12.50
• 6.12.51
• 6.12.52
• 6.12.53
• 6.12.54
• 6.12.55
• 6.17.0
• 6.17.1
• 6.17.2
• 6.17.3
• 6.17.4
• 6.17.5

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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