Bug 678270 (CVE-2019-6974)

Summary:	sys-kernel/gentoo-sources: kvm_main.c mishandles reference counting (use-after-free) (CVE-2019-6974)
Product:	Gentoo Security	Reporter:	D'juan McDonald (domhnall) <flopwiki>
Component:	Kernel	Assignee:	Gentoo Kernel Security <security-kernel>
Status:	RESOLVED FIXED
Severity:	normal	CC:	kernel
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cfa39381173d5f969daf43582c95ad679189cbc9
Whiteboard:	A3 [stable?]
Package list:		Runtime testing required:	---

Description D'juan McDonald (domhnall) 2019-02-18 04:09:54 UTC

(https://nvd.nist.gov/vuln/detail/CVE-2019-6974):

In the Linux kernel before 4.20.8, kvm_ioctl_create_device in virt/kvm/kvm_main.c mishandles reference counting because of a race condition, leading to a use-after-free.


Gentoo Security Padawan
(domhnall)

Comment 1 John Helmert III archtester

2022-03-26 00:52:25 UTC

Fixed in 4.9.156, 4.9.156, 4.14.99, 4.19.21.