Release of Invalid Pointer or Reference Affecting linux-4.19 package, versions <4.19.160-2~deb9u1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-DEBIAN9-LINUX419-1048663
  • published20 Nov 2020
  • disclosed19 Nov 2020

Introduced: 19 Nov 2020

CVE-2020-28941  (opens in a new tab)
CWE-763  (opens in a new tab)

How to fix?

Upgrade Debian:9 linux-4.19 to version 4.19.160-2~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.

An issue was discovered in drivers/accessibility/speakup/spk_ttyio.c in the Linux kernel through 5.9.9. Local attackers on systems with the speakup driver could cause a local denial of service attack, aka CID-d41227544427. This occurs because of an invalid free when the line discipline is used more than once.

CVSS Base Scores

version 3.1