Bug 1158821 – VUL-1: CVE-2019-19449: kernel-source: mounting a crafted f2fs filesystem image can lead to slab-out-of-bounds read access in f2fs_build_segment_manager in fs/f2fs/segment.c, related to init_min_max_mtime in fs/f2

Bug 1158821 - (CVE-2019-19449) VUL-1: CVE-2019-19449: kernel-source: mounting a crafted f2fs filesystem image can lead to slab-out-of-bounds read access in f2fs_build_segment_manager in fs/f2fs/segment.c, related to init_min_max_mtime in fs/f2

(CVE-2019-19449)
Summary:	VUL-1: CVE-2019-19449: kernel-source: mounting a crafted f2fs filesystem imag...

Status:	RESOLVED INVALID

Classification:	Novell Products
Product:	SUSE Security Incidents
Classification:	Novell Products
Component:	Incidents
Version:	unspecified
Hardware:	Other Other

Priority:	P5 - None Severity: Minor
Target Milestone:	---
Assigned To:	Security Team bot
QA Contact:	Security Team bot

URL:	https://smash.suse.de/issue/248546/
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Reported:	2019-12-09 16:25 UTC by Wolfgang Frisch
Modified:	2021-05-10 12:45 UTC (History)
CC List:	4 users (show)

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Found By:	Security Response Team
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Description Wolfgang Frisch 2019-12-09 16:25:07 UTC

CVE-2019-19449

In the Linux kernel 5.0.21, mounting a crafted f2fs filesystem image can lead to
slab-out-of-bounds read access in f2fs_build_segment_manager in
fs/f2fs/segment.c, related to init_min_max_mtime in fs/f2fs/segment.c (because
the second argument to get_seg_entry is not validated).

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-19449
http://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-19449.html
https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19449
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19449

Comment 1 Takashi Iwai 2019-12-09 16:36:35 UTC

f2fs is disabled on all SUSE and openSUSE releases including TW.  So we are unaffected.

Comment 2 Wolfgang Frisch 2019-12-09 16:50:45 UTC

Thanks for looking into it.

Closed.