NULL Pointer Dereference Affecting linux-4.9 package, versions <4.9.210-1~deb8u1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.08% (37th percentile)

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  • Snyk IDSNYK-DEBIAN8-LINUX49-551838
  • published22 Nov 2019
  • disclosed22 Nov 2019

Introduced: 22 Nov 2019

CVE-2019-19227  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Debian:8 linux-4.9 to version 4.9.210-1~deb8u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-4.9 package and not the linux-4.9 package as distributed by Debian. See How to fix? for Debian:8 relevant fixed versions and status.

In the AppleTalk subsystem in the Linux kernel before 5.1, there is a potential NULL pointer dereference because register_snap_client may return NULL. This will lead to denial of service in net/appletalk/aarp.c and net/appletalk/ddp.c, as demonstrated by unregister_snap_client, aka CID-9804501fa122.

CVSS Base Scores

version 3.1