Bug 1158270 (CVE-2019-19378)

Summary:	VUL-0: CVE-2019-19378: kernel-source: mounting a crafted btrfs filesystem image can lead to slab-out-of-bounds write access in index_rbio_pages in fs/btrfs/raid56.c
Product:	[Novell Products] SUSE Security Incidents	Reporter:	Robert Frohl <rfrohl>
Component:	Incidents	Assignee:	E-mail List <kernel-maintainers>
Status:	RESOLVED WONTFIX	QA Contact:	Security Team bot <security-team>
Severity:	Minor
Priority:	P5 - None	CC:	meissner, rgoldwyn, smash_bz, tiwai
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/248190/
Whiteboard:	CVSSv2:NVD:CVE-2019-19378:6.8:(AV:N/AC:M/Au:N/C:P/I:P/A:P) CVSSv3:NVD:CVE-2019-19378:7.8:(AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---
Bug Depends on:
Bug Blocks:	1185853

Description Robert Frohl 2019-12-03 10:43:13 UTC

CVE-2019-19378

In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image can lead to slab-out-of-bounds
write access in index_rbio_pages in fs/btrfs/raid56.c.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-19378
http://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-19378.html

Comment 1 Robert Frohl 2019-12-03 10:44:40 UTC

From the supported codestreams SLE12-SP1-LTSS and newer seem affected (code wise).

Comment 2 Goldwyn Rodrigues 2019-12-03 20:16:33 UTC

We don't support RAID 5/6 on btrfs, so closing as WONTFIX.