Out-of-bounds Read Affecting linux-4.19 package, versions <4.19.171-2~deb9u1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.04% (16th percentile)

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  • Snyk IDSNYK-DEBIAN9-LINUX419-1073745
  • published12 Jan 2021
  • disclosed26 May 2021

Introduced: 12 Jan 2021

CVE-2021-20177  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Debian:9 linux-4.19 to version 4.19.171-2~deb9u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-4.19 package and not the linux-4.19 package as distributed by Debian. See How to fix? for Debian:9 relevant fixed versions and status.

A flaw was found in the Linux kernel's implementation of string matching within a packet. A privileged user (with root or CAP_NET_ADMIN) when inserting iptables rules could insert a rule which can panic the system. Kernel before kernel 5.5-rc1 is affected.

CVSS Base Scores

version 3.1