Race condition in Linux kernel - CVE-2015-7613

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Main Vulnerability Database Vulnerabilities #VU2591

Race condition in Linux kernel - CVE-2015-7613

Published: December 21, 2016 / Updated: April 17, 2018


Vulnerability identifier: #VU2591
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2015-7613
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The weakness exists in the IPC object implementation due to race condition. A local attacker can trigger an ipc_addid call that leads to uid and gid comparisons against uninitialized data, related to msg.c, shm.c, and util.c and gain root privileges.

Affected software

Linux kernel
Red Hat Enterprise Linux Server from RHUI
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux Server - Extended Update Support from RHUI
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux Server - Extended Update Support
Ubuntu
Fedora

kernel (Red Hat package)
kernel

How to mitigate CVE-2015-7613

Update to version 4.2.3.

kernel (Red Hat package) - update to 2.6.32-573.12.1.el6
kernel - addressed in versions 4.1.10-100.fc21, 4.1.10-200.fc22, 4.2.3-300.fc23

External References

Related Security Bulletins