Linux Kernel up to 5.15.164/6.1.102/6.6.43/6.10.2 netfilter nft_concat_range.sh memset buffer overflow

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.15.164/6.1.102/6.6.43/6.10.2. It has been rated as critical. Affected by this vulnerability is the function memset of the file nft_concat_range.sh of the component netfilter. Performing a manipulation results in buffer overflow. This vulnerability is cataloged as CVE-2024-57947. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 5.15.164/6.1.102/6.6.43/6.10.2. This affects the function memset of the file nft_concat_range.sh of the component netfilter. The manipulation with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_set_pipapo: fix initial map fill The initial buffer has to be inited to all-ones, but it must restrict it to the size of the first field, not the total field size. After each round in the map search step, the result and the fill map are swapped, so if we have a set where f->bsize of the first element is smaller than m->bsize_max, those one-bits are leaked into future rounds result map. This makes pipapo find an incorrect matching results for sets where first field size is not the largest. Followup patch adds a test case to nft_concat_range.sh selftest script. Thanks to Stefano Brivio for pointing out that we need to zero out the remainder explicitly, only correcting memset() argument isn't enough.

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2024-57947 since 01/19/2025. The exploitability is told to be easy. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/21/2026).

The vulnerability scanner Nessus provides a plugin with the ID 232713 (Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2025-864)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.15.165, 6.1.103, 6.6.44 or 6.10.3 eliminates this vulnerability. Applying the patch 957a4d1c4c5849e4515c9fb4db21bf85318103dc/9625c46ce6fd4f922595a4b32b1de5066d70464f/69b6a67f7052905e928d75a0c5871de50e686986/8058c88ac0df21239daee54b5934d5c80ca9685f/791a615b7ad2258c560f91852be54b0480837c93 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 (232713), EUVD (EUVD-2024-53850) and CERT Bund (WID-SEC-2025-1439). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

• SUSE Linux
• Dell Secure Connect Gateway

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.15.164
• 6.1.102
• 6.6.0
• 6.6.1
• 6.6.2
• 6.6.3
• 6.6.4
• 6.6.5
• 6.6.6
• 6.6.7
• 6.6.8
• 6.6.9
• 6.6.10
• 6.6.11
• 6.6.12
• 6.6.13
• 6.6.14
• 6.6.15
• 6.6.16
• 6.6.17
• 6.6.18
• 6.6.19
• 6.6.20
• 6.6.21
• 6.6.22
• 6.6.23
• 6.6.24
• 6.6.25
• 6.6.26
• 6.6.27
• 6.6.28
• 6.6.29
• 6.6.30
• 6.6.31
• 6.6.32
• 6.6.33
• 6.6.34
• 6.6.35
• 6.6.36
• 6.6.37
• 6.6.38
• 6.6.39
• 6.6.40
• 6.6.41
• 6.6.42
• 6.6.43
• 6.10.0
• 6.10.1
• 6.10.2

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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