SB2019072240 - Slackware Linux update for kernel

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Main Vulnerability Database SB2019072240

SB2019072240 - Slackware Linux update for kernel

Published: July 22, 2019 Updated: April 24, 2025

Security Bulletin ID SB2019072240
Severity
High
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Adjecent network
Highest impact Code execution

Breakdown by Severity

High 20% Low 80%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 secuirty vulnerabilities.


1) Race condition (CVE-ID: CVE-2019-11599)

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

The vulnerability exists due to a race condition with mmget_not_zero or get_task_mm calls and is related to fs/userfaultfd.c, mm/mmap.c, fs/proc/task_mmu.c, and drivers/infiniband/core/uverbs_main.c due to kernel does not use locking or other mechanisms to prevent vma layout or vma flags changes while it runs. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.


2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-13272)

The vulnerability allows a local user to perform unauthorized actions on a targeted system.

The vulnerability exists when recording the credentials of a process that will create a ptrace relationship in the "ptrace_link" function in the "kernel/ptrace.c" file. A local authenticated user can create a specially crafted application and escalate privileges on the system.

3) Authorization bypass (CVE-ID: CVE-2018-16597)

The vulnerability allows a local authenticated user to manipulate data.

An issue was discovered in the Linux kernel before 4.8. Incorrect access checking in overlayfs mounts could be used by local attackers to modify or truncate files in the underlying filesystem.


4) Heap-based buffer overflow (CVE-ID: CVE-2019-10126)

The vulnerability allows a local user to perform a denial of service (DoS) condition or execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the Marvell Wireless LAN device driver in "mwifiex_uap_parse_tail_ies" function in "drivers/net/wireless/marvell/mwifiex/ie.c". A local authenticated user can trigger heap-based buffer overflow and cause a denial of service (system crash) or possibly execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


5) Buffer overflow (CVE-ID: CVE-2019-3846)

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

A flaw that allowed an attacker to corrupt memory and possibly escalate privileges was found in the mwifiex kernel module while connecting to a malicious wireless network.


Remediation

Install update from vendor's website.

References