CVE-2015-8709

HIGH

Linux Kernel < 4.4.1 - Privilege Escalation via Ptrace System Call

Title source: llm
STIX 2.1

Description

kernel/ptrace.c in the Linux kernel through 4.4.1 mishandles uid and gid mappings, which allows local users to gain privileges by establishing a user namespace, waiting for a root process to enter that namespace with an unsafe uid or gid, and then using the ptrace system call. NOTE: the vendor states "there is no kernel bug here.

References (25)

Core 25
Core References
Various Sources mailing-list x_refsource_mlist
https://lkml.org/lkml/2015/12/25/71
Mailing List mailing-list x_refsource_mlist
http://marc.info/?l=linux-kernel&m=145204641422813&w=2
Mailing List mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2015/12/31/5
Mailing List mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2015/12/17/12
Mailing List mailing-list x_refsource_mlist
http://marc.info/?l=linux-kernel&m=145204362722256&w=2
Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/79899
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1034899
Issue Tracking x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=1295287
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2016/dsa-3434

Scores

CVSS v3 7.0
EPSS 0.0040
EPSS Percentile 32.6%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-264
Status published
Products (1)
linux/linux_kernel < 4.4.1
Published Feb 08, 2016
Tracked Since Feb 18, 2026