SB2016062504 - Fedora 24 update for kernel

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Main Vulnerability Database SB2016062504

SB2016062504 - Fedora 24 update for kernel

Published: June 25, 2016 Updated: April 24, 2025

Security Bulletin ID SB2016062504
Severity
High
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

High 20% Medium 20% Low 60%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 secuirty vulnerabilities.


1) Resource exhaustion (CVE-ID: CVE-2016-1583)

The vulnerability allows a local attacker to cause DoS condition and gain elevated privileges on the target system.

The weakness exists in the ecryptfs_privileged_open function in fs/ecryptfs/kthread.c due to stack memory consumption. A local attacker can cause the service to crash and gain elevated privileges via vectors involving crafted mmap calls for /proc pathnames, leading to recursive pagefault handling.

2) Data handling (CVE-ID: CVE-2016-4470)

The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists in the key_reject_and_link function in security/keys/key.c due to it does not ensure that a certain data structure is initialized. A local attacker can cause the service to crash via vectors involving a crafted keyctl request2 command.

3) Memory corruption (CVE-ID: CVE-2016-4998)

The vulnerability allows a local user to cause denial of service conditions on the target system.

The vulnerability exists due to memory access error. A local user can cause the target sysetm to crash by issuing a specially crafted IPT_SO_SET_REPLACE setsockopt() call.

Successful exploitation of this vulnerability may result in the crash of the target sysetm.

4) Buffer overflow (CVE-ID: CVE-2016-5728)

The vulnerability allows a local authenticated user to #BASIC_IMPACT#.

Race condition in the vop_ioctl function in drivers/misc/mic/vop/vop_vringh.c in the MIC VOP driver in the Linux kernel before 4.6.1 allows local users to obtain sensitive information from kernel memory or cause a denial of service (memory corruption and system crash) by changing a certain header, aka a "double fetch" vulnerability.


5) Memory corruption (CVE-ID: CVE-2016-4997)

The vulnerability allows a local user to obtain elevated privileges on the target system.

The vulnerability exists due to a memory corruption error in the IPT_SO_SET_REPLACE compat_setsockopt() function.

Successful exploitation of this vulnerability may lead to arbitrary code execution with kernel-level privileges.

Remediation

Install update from vendor's website.

References