CVE-2021-38300 Affecting linux-4.19 package, versions <4.19.232-1~deb9u1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.11% (47th percentile)

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  • Snyk IDSNYK-DEBIAN9-LINUX419-2420554
  • published16 Sept 2021
  • disclosed20 Sept 2021

Introduced: 16 Sep 2021

CVE-2021-38300  (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.

arch/mips/net/bpf_jit.c in the Linux kernel before 5.4.10 can generate undesirable machine code when transforming unprivileged cBPF programs, allowing execution of arbitrary code within the kernel context. This occurs because conditional branches can exceed the 128 KB limit of the MIPS architecture.

CVSS Base Scores

version 3.1