Vulnerability Details CVE-2017-7979
The cookie feature in the packet action API implementation in net/sched/act_api.c in the Linux kernel 4.11.x through 4.11-rc7 mishandles the tb nlattr array, which allows local users to cause a denial of service (uninitialized memory access and refcount underflow, and system hang or crash) or possibly have unspecified other impact via "tc filter add" commands in certain contexts. NOTE: this does not affect stable kernels, such as 4.10.x, from kernel.org.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 12.7%
CVSS Severity
CVSS v3 Score 7.8
CVSS v2 Score 7.2
References
- http://marc.info/?l=linux-netdev&m=149200742616349
- http://marc.info/?l=linux-netdev&m=149200746116365
- http://marc.info/?l=linux-netdev&m=149200746116366
- http://marc.info/?l=linux-netdev&m=149251041420194
- http://marc.info/?l=linux-netdev&m=149251041420195
- http://www.securityfocus.com/bid/97969
- https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1682368
- https://bugzilla.proxmox.com/show_bug.cgi?id=1351
- http://marc.info/?l=linux-netdev&m=149200742616349
- http://marc.info/?l=linux-netdev&m=149200746116365
- http://marc.info/?l=linux-netdev&m=149200746116366
- http://marc.info/?l=linux-netdev&m=149251041420194
- http://marc.info/?l=linux-netdev&m=149251041420195
- http://www.securityfocus.com/bid/97969
- https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1682368
- https://bugzilla.proxmox.com/show_bug.cgi?id=1351
Products affected by CVE-2017-7979
-
cpe:2.3:o:linux:linux_kernel:4.11