CVE-2018-6927: canonical ubuntu_linux Integer Overflow or Wraparound

Vulnerability summary

CVE-2018-6927 is a high (CVSS 7.8) Integer Overflow or Wraparound vulnerability in canonical ubuntu_linux. EPSS estimates a 0.65% chance of exploitation in the next 30 days, higher than 51% of scored vulnerabilities.

Timeline

1. 12-02-2018
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

Description

The futex_requeue function in kernel/futex.c in the Linux kernel before 4.14.15 might allow attackers to cause a denial of service (integer overflow) or possibly have unspecified other impact by triggering a negative wake or requeue value.

• CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.