CVE-2017-7979
HIGHLinux Kernel 4.11-rc1-4.11-rc7 - Denial of Service via Packet Action API Cookie Handling
Title source: llmDescription
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.
References (8)
Core 8
Core References
Mailing List, Patch, Third Party Advisory x_refsource_misc
http://marc.info/?l=linux-netdev&m=149251041420195
Issue Tracking, Patch x_refsource_misc
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1682368
Issue Tracking, Patch x_refsource_misc
https://bugzilla.proxmox.com/show_bug.cgi?id=1351
Mailing List, Patch, Third Party Advisory x_refsource_misc
http://marc.info/?l=linux-netdev&m=149200742616349
Mailing List, Patch, Third Party Advisory x_refsource_misc
http://marc.info/?l=linux-netdev&m=149200746116365
Mailing List, Patch, Third Party Advisory x_refsource_misc
http://marc.info/?l=linux-netdev&m=149251041420194
Mailing List, Patch, Third Party Advisory x_refsource_misc
http://marc.info/?l=linux-netdev&m=149200746116366
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/97969
Scores
CVSS v3
7.8
EPSS
0.0040
EPSS Percentile
31.5%
Attack Vector
LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-20
Status
published
Products (1)
linux/linux_kernel
4.11 rc1 (7 CPE variants)
Published
Apr 19, 2017
Tracked Since
Feb 18, 2026