Double free in Linux kernel - CVE-2016-9806
Published: December 28, 2016 / Updated: January 17, 2023
Vulnerability identifier: #VU90902
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2016-9806
CWE-ID: CWE-415
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to execute arbitrary code.
The vulnerability exists due to a double free error within the netlink_dump() function in net/netlink/af_netlink.c. A local user can execute arbitrary code.
Affected software
Linux kernel
Ubuntu
linux (Ubuntu package)
Ubuntu
linux (Ubuntu package)
How to mitigate CVE-2016-9806
Install update from vendor's website.
linux (Ubuntu package) - update to 3.13.0-107.154
External References
- https://github.com/torvalds/linux/commit/92964c79b357efd980812c4de5c1fd2ec8bb5520
- https://bugzilla.redhat.com/show_bug.cgi?id=1401502
- http://www.openwall.com/lists/oss-security/2016/12/03/4
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.3
- http://lists.openwall.net/netdev/2016/05/15/69
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=92964c79b357efd980812c4de5c1fd2ec8bb5520
- http://www.securityfocus.com/bid/94653
- https://source.android.com/security/bulletin/2017-03-01.html
- http://www.securitytracker.com/id/1037968
- https://access.redhat.com/errata/RHSA-2017:2669
- https://access.redhat.com/errata/RHSA-2017:2077
- https://access.redhat.com/errata/RHSA-2017:1842