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CVE-2024-0607— Kernel: nf_tables: pointer math issue in nft_byteorder_eval()

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 6
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于在nft_byteorder_eval()函数中，代码迭代循环并写入 dst[0]、dst[1]、dst[2]等，每次迭代都会写入 8 个字节，但 dst[] 是一个 u32 数组，因此每个元素只有 4 个字节的空间，这意味着每次迭代都会覆盖前一个元素的一部分。

CVSS 6.6 · Medium EPSS 0.24% · P14
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I. Basic Information for CVE-2024-0607

Vulnerability Information
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Vulnerability Title
Kernel: nf_tables: pointer math issue in nft_byteorder_eval()
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the Netfilter subsystem in the Linux kernel. The issue is in the nft_byteorder_eval() function, where the code iterates through a loop and writes to the `dst` array. On each iteration, 8 bytes are written, but `dst` is an array of u32, so each element only has space for 4 bytes. That means every iteration overwrites part of the previous element corrupting this array of u32. This flaw allows a local user to cause a denial of service or potentially break NetFilter functionality.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
值处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于在nft_byteorder_eval()函数中，代码迭代循环并写入 dst[0]、dst[1]、dst[2]等，每次迭代都会写入 8 个字节，但 dst[] 是一个 u32 数组，因此每个元素只有 4 个字节的空间，这意味着每次迭代都会覆盖前一个元素的一部分。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2024-0607

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III. Intelligence Information for CVE-2024-0607

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Patches & Fixes for CVE-2024-0607 (1)

Vendor Advisories for CVE-2024-0607 (2)

Mailing List Discussions for CVE-2024-0607 (2)

IV. Related Vulnerabilities

Same weakness: CWE-229

V. Comments for CVE-2024-0607

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