Bug 1159437 (CVE-2019-19814)

Summary: VUL-1: CVE-2019-19814: kernel-source: mounting a crafted f2fs filesystem image can cause __remove_dirty_segment slab-out-of-bounds write access
Product: [Novell Products] SUSE Security Incidents Reporter: Alexandros Toptsoglou <atoptsoglou>
Component: IncidentsAssignee: Security Team bot <security-team>
Status: RESOLVED INVALID QA Contact: Security Team bot <security-team>
Severity: Normal    
Priority: P5 - None CC: smash_bz, tiwai
Version: unspecified   
Target Milestone: ---   
Hardware: Other   
OS: Other   
URL: https://smash.suse.de/issue/249201/
Whiteboard:
Found By: Security Response Team Services Priority:
Business Priority: Blocker: ---
Marketing QA Status: --- IT Deployment: ---

Description Alexandros Toptsoglou 2019-12-18 09:06:45 UTC
CVE-2019-19814

In the Linux kernel 5.0.21, mounting a crafted f2fs filesystem image can cause
__remove_dirty_segment slab-out-of-bounds write access because an array is
bounded by the number of dirty types (8) but the array index can exceed this.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-19814
https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19814
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19814
Comment 1 Takashi Iwai 2019-12-18 11:09:56 UTC
f2fs is disabled on both all SUSE and openSUSE releases, so we're unaffected.

Reassigned back to security team.
Comment 2 Alexandros Toptsoglou 2019-12-18 12:19:49 UTC
comment 1