CVE-2015-4170

MEDIUM

Linux Kernel < 3.13.3 - Race Condition

Title source: rule

Description

Race condition in the ldsem_cmpxchg function in drivers/tty/tty_ldsem.c in the Linux kernel before 3.13-rc4-next-20131218 allows local users to cause a denial of service (ldsem_down_read and ldsem_down_write deadlock) by establishing a new tty thread during shutdown of a previous tty thread.

References (8)

[Vendor Advisory] http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cf872776fc84128bb779ce2b83a37c884c3203ae

[Vendor Advisory] http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html

[Third Party Advisory] https://access.redhat.com/errata/RHSA-2016:1395

[Issue Tracking, VDB Entry] https://bugzilla.redhat.com/show_bug.cgi?id=1218879

[Patch] https://www.kernel.org/pub/linux/kernel/next/patch-v3.13-rc4-next-20131218.xz

[Patch] https://github.com/torvalds/linux/commit/cf872776fc84128bb779ce2b83a37c884c3203ae

View Patch ZIP pw:eip

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/74820

[Mailing List] http://www.openwall.com/lists/oss-security/2015/05/26/1

Scores

CVSS v3 4.7

EPSS 0.0006

EPSS Percentile 19.8%

Attack Vector LOCAL

CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

Classification

CWE

CWE-362

Status draft

Affected Products (6)

linux/linux_kernel < 3.13.3

redhat/enterprise_linux_compute_node_eus

redhat/enterprise_linux_for_ibm_z_systems_eus

redhat/enterprise_linux_for_power_big_endian_eus

redhat/enterprise_linux_for_power_little_endian_eus

redhat/enterprise_linux_server_eus

Timeline

Published May 02, 2016

Tracked Since Feb 18, 2026