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.
Metrics
CVSS 3.0 7.0/10
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00019.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00025.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00026.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00027.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00028.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00029.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00030.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00031.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00032.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00033.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00034.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00036.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00037.html
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html
- http://marc.info/?l=linux-kernel&m=145204362722256&w=2
- http://marc.info/?l=linux-kernel&m=145204641422813&w=2
- http://www.debian.org/security/2016/dsa-3434
- http://www.openwall.com/lists/oss-security/2015/12/17/12
- http://www.openwall.com/lists/oss-security/2015/12/31/5
- http://www.securityfocus.com/bid/79899
- http://www.securitytracker.com/id/1034899
- https://bugzilla.redhat.com/show_bug.cgi?id=1295287
- https://lkml.org/lkml/2015/12/25/71
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00019.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00025.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00026.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00027.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00028.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00029.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00030.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00031.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00032.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00033.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00034.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00036.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00037.html
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html
- http://marc.info/?l=linux-kernel&m=145204362722256&w=2
- http://marc.info/?l=linux-kernel&m=145204641422813&w=2
- http://www.debian.org/security/2016/dsa-3434
- http://www.openwall.com/lists/oss-security/2015/12/17/12
- http://www.openwall.com/lists/oss-security/2015/12/31/5
- http://www.securityfocus.com/bid/79899
- http://www.securitytracker.com/id/1034899
- https://bugzilla.redhat.com/show_bug.cgi?id=1295287
- https://lkml.org/lkml/2015/12/25/71
Timeline
- Published
- Feb 8, 2016
- Last modified
- Jun 17, 2026
- NVD status
- Modified