Bug 628408 (CVE-2017-10663)

Summary:	Linux Kernel Local Privilege Escalation (CVE-2017-10663)
Product:	Gentoo Security	Reporter:	D'juan McDonald (domhnall) <flopwiki>
Component:	Kernel	Assignee:	Gentoo Kernel Security <security-kernel>
Status:	RESOLVED FIXED
Severity:	normal	CC:	security-kernel
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-10663
Whiteboard:
Package list:		Runtime testing required:	---

Description D'juan McDonald (domhnall) 2017-08-20 18:13:57 UTC

From $URL:

The sanity_check_ckpt function in fs/f2fs/super.c in the Linux kernel before 4.12.4 does not validate the blkoff and segno arrays, which allows local users to gain privileges via unspecified vectors.

Sources:
https://github.com/torvalds/linux/commit/15d3042a937c13f5d9244241c7a9c8416ff6e82a
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.12.4

Comment 1 John Helmert III archtester

2022-03-26 00:12:14 UTC

Fix in 4.9.42, 4.13