Release of Invalid Pointer or Reference Affecting torvalds/linux package, versions [,5.9.14)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.06% (20th percentile)

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  • Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-3005751
  • published26 Jan 2022
  • disclosed19 Nov 2020
  • creditUnknown

Introduced: 19 Nov 2020

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

How to fix?

Upgrade torvalds/linux to version 5.9.14 or higher.

Overview

Affected versions of this package are vulnerable to Release of Invalid Pointer or Reference. 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