SB2018102322 - Ubuntu update for linux, linux-aws, linux-kvm and more

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Main Vulnerability Database SB2018102322

SB2018102322 - Ubuntu update for linux, linux-aws, linux-kvm and more

Published: October 23, 2018 Updated: October 31, 2026

Security Bulletin ID SB2018102322
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 25% Low 75%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Infinite loop (CVE-ID: CVE-2018-10938)

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


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

The vulnerability exists due to an error when processing network packets within the cipso_v4_optptr() function in net/ipv4/cipso_ipv4.c. A remote unauthenticated attacker can send a specially crafted packet to the affected system, force the Linux kernel enter an infinite loop and cause denial of service.


2) Use-after-free error (CVE-ID: CVE-2018-14734)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


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

The vulnerability exists due to the ucma_leave_multicast() function, as defined in the drivers/infiniband/core/ucma.c source code file of the affected software, could allow access to a certain data structure after it has been allocated and freed in the ucma_process_join() function. A local attacker can send a specially request that submits malicious input, trigger use-after-free error and cause the service to crash.


3) Buffer over-read (CVE-ID: CVE-2018-16658)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 5.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


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

The vulnerability exists due to a boundary condition in cdrom_ioctl_drive_status() function in drivers/cdrom/cdrom.c. A local unprivileged user can create a specially crafted application, trigger out-of-bounds read error and read contents of kernel memory.


4) Buffer overflow (CVE-ID: CVE-2018-9363)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: 5.4 [CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows an attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error within the hidp_process_report when processing Bluetooth packets. An attacker with physical proximity to the system can send specially crafted traffic, trigger memory corruption and perform denial of service attack or execute arbitrary code.


Remediation

Install update from vendor's website.

References