SB20211214112 - SUSE update for the Linux Kernel (Live Patch 15 for SLE 15 SP2) 

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Main Vulnerability Database SB20211214112

SB20211214112 - SUSE update for the Linux Kernel (Live Patch 15 for SLE 15 SP2)

Published: December 14, 2021

Security Bulletin ID SB20211214112
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Out-of-bounds read (CVE-ID: CVE-2021-0941)

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists in __bpf_skb_max_len() function in net/core/filter.c in the Linux kernel. A local user with special privilege can gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information.


2) Use of insufficiently random values (CVE-ID: CVE-2021-20322)

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

The vulnerability exists due to an error when processing received ICMP errors. A remote attacker can effectively bypass the source port UDP randomization to gain access to sensitive information.


Remediation

Install update from vendor's website.

References