SB2016122808 - Out-of-bounds read in Linux kernel ipv6 netfilter
Published: December 28, 2016
Security Bulletin ID
SB2016122808
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2016-9755)
The vulnerability allows a local user to execute arbitrary code.
The vulnerability exists due to an out-of-bounds read error within the ipv6_defrag() function in net/ipv6/netfilter/nf_defrag_ipv6_hooks.c, within the nf_ct_frag6_gather() function in net/ipv6/netfilter/nf_conntrack_reasm.c. A local user can execute arbitrary code.
Remediation
Install update from vendor's website.
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9b57da0630c9fd36ed7a20fc0f98dc82cc0777fa
- http://www.openwall.com/lists/oss-security/2016/12/01/10
- http://www.securityfocus.com/bid/94626
- https://bugzilla.redhat.com/show_bug.cgi?id=1400904
- https://github.com/torvalds/linux/commit/9b57da0630c9fd36ed7a20fc0f98dc82cc0777fa
- https://groups.google.com/forum/#!topic/syzkaller/GFbGpX7nTEo
- https://www.spinics.net/lists/netdev/msg407525.html