CDC-NCM: avoid overflow in sanity checking(CVE-2022-48938)

概要

CDC-NCM: avoid overflow in sanity checking

原文の説明

取得元が公開している説明をそのまま載せています (多くは英語)。

In the Linux kernel, the following vulnerability has been resolved:

CDC-NCM: avoid overflow in sanity checking

A broken device may give an extreme offset like 0xFFF0
and a reasonable length for a fragment. In the sanity
check as formulated now, this will create an integer
overflow, defeating the sanity check. Both offset
and offset + len need to be checked in such a manner
that no overflow can occur.
And those quantities should be unsigned.

出典: OSV.dev (Open Source Vulnerabilities) NVD OSV

影響パッケージ

Linux Kernel

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.19.323"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.20.0"},{"fixed":"5.4.285"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.5.0"},{"fixed":"5.10.103"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.7.0"},{"fixed":"5.15.26"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.16.12"}]}]

ディストリビューション別の修正状況

各ディストリビューションが公開している、この CVE の修正パッケージ

Debian DEBIAN-CVE-2022-48938 linux 修正版: 5.10.103-1
Ubuntu UBUNTU-CVE-2022-48938 linux-aws 修正版: 4.4.0-1138.144

概要

原文の説明

影響パッケージ

ディストリビューション別の修正状況

参照URL