The NFSv4 server in the Linux kernel before 4.11.3 does not properly validate the layout type when processing the NFSv4 pNFS GETDEVICEINFO or LAYOUTGE...

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)。

The NFSv4 server in the Linux kernel before 4.11.3 does not properly validate the layout type when processing the NFSv4 pNFS GETDEVICEINFO or LAYOUTGET operand in a UDP packet from a remote attacker. This type value is uninitialized upon encountering certain error conditions. This value is used as an array index for dereferencing, which leads to an OOPS and eventually a DoS of knfsd and a soft-lockup of the whole system.

出典: OSV.dev (Open Source Vulnerabilities) OSV

影響パッケージ

Debian:12 linux

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.9.30-1"}]}]

Debian:13 linux

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.9.30-1"}]}]

Debian:14 linux

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.9.30-1"}]}]

参照URL

advisory security-tracker.debian.org