Red Hat Enterprise Linux 7 update for kpatch-patch

1) Buffer overflow

EUVDB-ID: #VU58841

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-14385

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error in the file system metadata validator in XFS. A local user can cause an inode with a valid, user-creatable extended attribute to be flagged as corrupt and shutdown the the filesystem.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for Power, little endian: 7

Red Hat Enterprise Linux Server: 7

kpatch-patch-3_10_0-1160_6_1 (Red Hat package): before 1-1.el7

kpatch-patch-3_10_0-1160_2_2 (Red Hat package): before 1-1.el7

kpatch-patch-3_10_0-1160_2_1 (Red Hat package): before 1-1.el7

kpatch-patch-3_10_0-1160 (Red Hat package): before 1-1.el7

External links

http://access.redhat.com/errata/RHSA-2020:5050

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.