SB2019111821 - Multiple vulnerabilities in Linux kernel

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Main Vulnerability Database SB2019111821

SB2019111821 - Multiple vulnerabilities in Linux kernel

Published: November 18, 2019 Updated: January 21, 2020

Security Bulletin ID SB2019111821
Severity
Low
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 secuirty vulnerabilities.


1) Memory leak (CVE-ID: CVE-2019-19080)

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

The vulnerability exists due to memory leak within the "nfp_flower_spawn_phy_reprs()" function in drivers/net/ethernet/netronome/nfp/flower/main.c in the Linux kernel before 5.3.4 allow local user to cause a denial of service (memory consumption).


2) Information disclosure (CVE-ID: CVE-2019-19533)

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

The vulnerability exists due to an info-leak bug in the drivers/media/usb/ttusb-dec/ttusb_dec.c driver. A local user with physical access can use a malicious USB device and gain unauthorized access to sensitive information on the system.


3) Memory leak (CVE-ID: CVE-2019-19081)

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

The vulnerability exists due to memory leak within the "nfp_flower_spawn_vnic_reprs()" function in drivers/net/ethernet/netronome/nfp/flower/main.c in the Linux kernel before 5.3.4 allows a local user to cause a denial of service (memory consumption).


4) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-17052)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to the ax25_create() function in net/ax25/af_ax25.c in the AF_AX25 network module for the Linux kernel does not enforce CAP_NET_RAW when creating raw sockets. A local unprivileged user can create raw sockets on the system.


5) Buffer overflow (CVE-ID: CVE-2019-18198)

The vulnerability allows a local user to escalate privileges system.

The vulnerability exists due to a reference count usage error in the fib6_rule_suppress() function in the fib6 suppression feature of net/ipv6/fib6_rules.c within the Linux kernel, when handling the FIB_LOOKUP_NOREF flag. A local user can set the FIB_LOOKUP_NOREF flag, trigge rmemory corruption and execute arbitrary code on the system with elevated privileges.


Remediation

Install update from vendor's website.

References