Out-of-bounds Write Affecting linux-4.19 package, versions <4.19.232-1~deb9u1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.05% (24th percentile)

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  • Snyk IDSNYK-DEBIAN9-LINUX419-2420586
  • published20 Oct 2021
  • disclosed20 Oct 2021

Introduced: 20 Oct 2021

CVE-2021-42739  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Debian:9 linux-4.19 to version 4.19.232-1~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.

The firewire subsystem in the Linux kernel through 5.14.13 has a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandles bounds checking.

CVSS Base Scores

version 3.1