PT-2016-7822 · Linux+5 · Linux Kernel+5
Andrey Konovalov
·
Published
2016-12-08
·
Updated
2025-09-29
·
CVE-2016-9793
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 4.8.14
Description
The issue is related to the mishandling of negative values of
sk sndbuf and sk rcvbuf by the sock setsockopt function in the Linux kernel. This can be exploited by local users with the CAP NET ADMIN capability to cause a denial of service, resulting in memory corruption and system crash, by making a crafted setsockopt system call with the SO SNDBUFFORCE or SO RCVBUFFORCE option.Recommendations
For Linux kernel versions prior to 4.8.14, update to version 4.8.14 or later to resolve the issue. As a temporary workaround, consider restricting the use of the
setsockopt system call with the SO SNDBUFFORCE or SO RCVBUFFORCE option to minimize the risk of exploitation.Exploit
Fix
DoS
Buffer Overflow
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Centos
Linux Kernel
Red Hat
Suse
Ubuntu