Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 4.4.1 |
Related Weaknesses (CWE)
References
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176484.h
- 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
FAQ
What is CVE-2015-8709?
CVE-2015-8709 is a vulnerability with a CVSS score of 7.0 (HIGH). 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 tha...
How severe is CVE-2015-8709?
CVE-2015-8709 has been rated HIGH with a CVSS base score of 7.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2015-8709?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.