SB2021011922 - Red Hat Enterprise Linux 8 update for kernel

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Main Vulnerability Database SB2021011922

SB2021011922 - Red Hat Enterprise Linux 8 update for kernel

Published: January 19, 2021

Security Bulletin ID SB2021011922
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Use of insufficiently random values (CVE-ID: CVE-2020-16166)

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

The vulnerability exists due to use of insufficiently random values error within the prandom_state_selftest() function in lib/random32.c, within the update_process_times() function in kernel/time/timer.c, within the add_interrupt_randomness() function in drivers/char/random.c. A remote non-authenticated attacker can gain access to sensitive information.


2) Buffer overflow (CVE-ID: CVE-2020-25211)

The vulnerability allows a local user to crash the system.

The vulnerability exists due to a boundary error within the ctnetlink_parse_tuple_filter() function in net/netfilter/nf_conntrack_netlink.c. A local user can inject conntrack netlink configuration, trigger buffer overflow and crash the kernel or force usage of incorrect protocol numbers.


Remediation

Install update from vendor's website.

References