SB2019090447 - Red Hat Enterprise Linux 7 update for kernel 

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Main Vulnerability Database SB2019090447

SB2019090447 - Red Hat Enterprise Linux 7 update for kernel

Published: September 4, 2019

Security Bulletin ID SB2019090447
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Adjecent network
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Information disclosure (CVE-ID: CVE-2019-1125)

The vulnerability allows a local user to gain access to potentially sensitive information and elevate privileges on the system.

The vulnerability exists when certain central processing units (CPU) speculatively access memory. A local user can gain unauthorized access to sensitive information and elevate privileges on the system.

This issue is a variant of the Spectre Variant 1 speculative execution side channel vulnerability that leverages SWAPGS instructions to bypass KPTI/KVA mitigations.


2) Heap-based buffer overflow (CVE-ID: CVE-2019-9500)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in the "brcmf_wowl_nd_results()" function in "drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c" file. A remote attacker on the local network can trigger heap-based buffer overflow and cause a denial of service condition on the target system.



Remediation

Install update from vendor's website.

References