Tracker / CVE-2023-52628
CVE-2023-52628
High 7.8
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).
Affected products and versions
| linux | linux_kernel · 4.1 → 5.10.198 |
|---|---|
| linux | linux_kernel · 5.11 → 5.15.132 |
| linux | linux_kernel · 5.16 → 6.1.54 |
| linux | linux_kernel · 6.2 → 6.5.4 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.