SB2021033056 - Improper Initialization in Linux kernel bpf

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Main Vulnerability Database SB2021033056

SB2021033056 - Improper Initialization in Linux kernel bpf

Published: March 30, 2021

Security Bulletin ID SB2021033056
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Improper Initialization (CVE-ID: CVE-2021-29648)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper initialization within the check_btf_info() function in kernel/bpf/verifier.c, within the map_create() function in kernel/bpf/syscall.c. A local user can perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References