openEuler 20.03 LTS update for kernel

1) Out-of-bounds write

EUVDB-ID: #VU30312

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-20636

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a local privileged user to execute arbitrary code.

In the Linux kernel before 5.4.12, drivers/input/input.c has out-of-bounds writes via a crafted keycode table, as demonstrated by input_set_keycode, aka CID-cb222aed03d7.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS

bpftool-debuginfo: before 4.19.90-2004.1.0.0037

bpftool: before 4.19.90-2004.1.0.0037

python3-perf-debuginfo: before 4.19.90-2004.1.0.0037

python3-perf: before 4.19.90-2004.1.0.0037

python2-perf-debuginfo: before 4.19.90-2004.1.0.0037

python2-perf: before 4.19.90-2004.1.0.0037

perf-debuginfo: before 4.19.90-2004.1.0.0037

perf: before 4.19.90-2004.1.0.0037

kernel-tools-devel: before 4.19.90-2004.1.0.0037

kernel-tools-debuginfo: before 4.19.90-2004.1.0.0037

kernel-tools: before 4.19.90-2004.1.0.0037

kernel-source: before 4.19.90-2004.1.0.0037

kernel-devel: before 4.19.90-2004.1.0.0037

kernel-debugsource: before 4.19.90-2004.1.0.0037

kernel-debuginfo: before 4.19.90-2004.1.0.0037

kernel: before 4.19.90-2004.1.0.0037

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2020-1001

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.