CVE-2016-9755
The netfilter subsystem in the Linux kernel before 4.9 mishandles IPv6 reassembly, which allows local users to cause a denial of service (integer overflow, out-of-bounds write, and GPF) or possibly have unspecified other impact via a crafted application…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.39%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The netfilter subsystem in the Linux kernel before 4.9 mishandles IPv6 reassembly, which allows local users to cause a denial of service (integer overflow, out-of-bounds write, and GPF) or possibly have unspecified other impact via a crafted application that makes socket, connect, and writev system calls, related to net/ipv6/netfilter/nf_conntrack_reasm.c and net/ipv6/netfilter/nf_defrag_ipv6_hooks.c.
- CVSS 3.0
- 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.39% probability · 33th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- linux/linux kernel
- Source
- cve@mitre.org
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9b57da0630c9fd36ed7a20fc0f98dc82cc0777faPatch, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2016/12/01/10Mailing List
- http://www.securityfocus.com/bid/94626
- https://bugzilla.redhat.com/show_bug.cgi?id=1400904Issue Tracking
- https://github.com/torvalds/linux/commit/9b57da0630c9fd36ed7a20fc0f98dc82cc0777fa
- https://groups.google.com/forum/#%21topic/syzkaller/GFbGpX7nTEo
- https://www.spinics.net/lists/netdev/msg407525.htmlMailing List, Patch
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9b57da0630c9fd36ed7a20fc0f98dc82cc0777faPatch, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2016/12/01/10Mailing List
- http://www.securityfocus.com/bid/94626
- https://bugzilla.redhat.com/show_bug.cgi?id=1400904Issue Tracking
- https://github.com/torvalds/linux/commit/9b57da0630c9fd36ed7a20fc0f98dc82cc0777fa
- https://groups.google.com/forum/#%21topic/syzkaller/GFbGpX7nTEo
- https://www.spinics.net/lists/netdev/msg407525.htmlMailing List, Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.