OpenSUSE Linux update for the Linux Kernel

Published: 2020-07-27

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-12771 CVE-2020-15393
CWE-ID	CWE-20 CWE-401
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	Opensuse Operating systems & Components / Operating system
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU28169

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-12771

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a deadlock if a coalescing operation fails in "btree_gc_coalesce" in "drivers/md/bcache/btree.c" file. A local user can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Update the affected packages.

Vulnerable software versions

Opensuse: 15.2

External links

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00071.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Memory leak

EUVDB-ID: #VU31921