PT-2019-10282 · Linux+1 · Linux Kernel+1

Published 2019-01-29 · Updated 2021-05-28 · CVE-2018-20854

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 4.20

Description: An issue was discovered in the Linux kernel. The file drivers/phy/mscc/phy-ocelot-serdes.c contains an off-by-one error, resulting in an out-of-bounds read of ctrl->phys.

Recommendations: For Linux kernel versions prior to 4.20, update to version 4.20 or later to resolve the issue. As a temporary workaround, consider restricting access to the vulnerable phy-ocelot-serdes.c file until a patch is available.

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

ALT-PU-2019-1139

ALT-PU-2019-1363

ALT-PU-2020-1198

ALT-PU-2020-1501

ALT-PU-2020-2410

ALT-PU-2020-2433

ALT-PU-2021-1870

CVE-2018-20854

Affected Products

Alt Linux

Linux Kernel

References · 11

• https://github.com/torvalds/linux/commit/6acb47d1a318e5b3b7115354ebc4ea060c59d3a1 · Patch
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6acb47d1a318e5b3b7115354ebc4ea060c59d3a1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-20854 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-20854 · Security Note
• https://osv.dev/vulnerability/CVE-2018-20854 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-20854 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-20854 · Vendor Advisory
• https://support.f5.com/csp/article/K32450233?utm_source=f5support&amp%3Butm_medium=RSS · Note
• https://support.f5.com/csp/article/K32450233 · Note
• https://t.me/cibsecurity/5729 · Telegram Post
• https://security.netapp.com/advisory/ntap-20190905-0002 · Note