Bug 867322 (CVE-2022-0934)

Summary:	<net-dns/dnsmasq-2.87: write-after-free DoS in dhcpv6
Product:	Gentoo Security	Reporter:	John Helmert III <ajak>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	CONFIRMED ---
Severity:	minor	CC:	ajak, chutzpah
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016272.html
Whiteboard:	B3 [glsa?]
Package list:		Runtime testing required:	---

Description John Helmert III archtester

2022-08-29 16:30:15 UTC

CVE-2022-0934 (https://bugzilla.redhat.com/show_bug.cgi?id=2057075):

A single-byte, non-arbitrary write/use-after-free flaw was found in dnsmasq. This flaw allows an attacker who sends a crafted packet processed by dnsmasq, potentially causing a denial of service.

Patch: https://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=03345ecefeb0d82e3c3a4c28f27c3554f0611b39