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: IncidentsAssignee: 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.