CVE-2015-8709

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.

Category

7.0
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.10%
Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory debian.org Vendor Advisory opensuse.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00031.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00027.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00028.html vendor advisory
https://lkml.org/lkml/2015/12/25/71 mailing list
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00029.html vendor advisory
http://marc.info/?l=linux-kernel&m=145204641422813&w=2 mailing list
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00025.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00019.html vendor advisory
http://www.openwall.com/lists/oss-security/2015/12/31/5 mailing list
http://www.openwall.com/lists/oss-security/2015/12/17/12 mailing list
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00030.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00036.html vendor advisory
http://marc.info/?l=linux-kernel&m=145204362722256&w=2 mailing list
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00026.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00032.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00034.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00037.html vendor advisory
http://www.securityfocus.com/bid/79899 vdb entry
http://www.securitytracker.com/id/1034899 vdb entry
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00015.html vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1295287
http://www.debian.org/security/2016/dsa-3434 vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00033.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2015-8709?
CVE-2015-8709 has been scored as a high severity vulnerability.
How to fix CVE-2015-8709?
To fix CVE-2015-8709, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-8709 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2015-8709 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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