Race condition in Linux kernel - CVE-2015-8767

Vulnerability identifier: #VU3882

CSH Severity: Low

CVSS v4: 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]

CVE-ID: CVE-2015-8767

CWE-ID: CWE-362

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The weakness exists in net/sctp/sm_sideeffect.c due to improper management of the relationship between a lock and a socket. A local attacker can submit a specially crafted sctp_accept call, trigger race condition and cause the service to crash.

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 Server - Extended Update Support
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
Fedora

kernel (Red Hat package)
kernel

Update to version 4.3.

kernel (Red Hat package) - update to 2.6.32-573.26.1.el6
kernel - update to 4.3.3-200.fc22

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=635682a14427d241bab7bbdeebb48a7d7b91638e

• Multiple vulnerabilities in Linux Kernel
• Red Hat update for kernel
• Fedora 22 update for kernel