🛡️ CVE-2023-52628
🟠 CVSS 7.1 — High ✅ No Known Exploit CWE-787 NVD
7.1
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: exthdr: fix 4-byte stack OOB write If priv->len is a multiple of 4, then dst[len / 4] can write past the destination array which leads to stack corruption. This construct is necessary to clean the remainder of the register in case ->len is NOT a multiple of the register size, so make it conditional just like nft_payload.c does. The bug was added in 4.1 cycle and then copied/inherited when tcp/sctp and ip option support was added. Bug reported by Zero Day Initiative project (ZDI-CAN-21950, ZDI-CAN-21951, ZDI-CAN-21961).

Details

Severity HIGH
CVSS Score 7.1
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE CWE-787
Public Exploit ✅ No
Source NVD
Published 2024-03-28
Updated 2026-06-08
Modified 2025-11-04

Affected Packages

Software From version Fixed in
linux-kernel 6.2 6.5.4

References

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