Integer Overflow or Wraparound Affecting kernel package, versions <0:3.10.0-514.16.1.el7
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Test your applications- Snyk ID SNYK-RHEL7-KERNEL-4723057
- published 26 Jul 2021
- disclosed 2 Dec 2016
Introduced: 2 Dec 2016
CVE-2016-9793 Open this link in a new tabHow to fix?
Upgrade RHEL:7 kernel to version 0:3.10.0-514.16.1.el7 or higher.
This issue was patched in RHSA-2017:0933.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
The sock_setsockopt function in net/core/sock.c in the Linux kernel before 4.8.14 mishandles negative values of sk_sndbuf and sk_rcvbuf, which allows local users to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact by leveraging the CAP_NET_ADMIN capability for a crafted setsockopt system call with the (1) SO_SNDBUFFORCE or (2) SO_RCVBUFFORCE option.
References
- http://www.securityfocus.com/bid/94655
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b98b0bc8c431e3ceb4b26b0dfc8db509518fb290
- https://bugzilla.redhat.com/show_bug.cgi?id=1402013
- https://github.com/torvalds/linux/commit/b98b0bc8c431e3ceb4b26b0dfc8db509518fb290
- https://source.android.com/security/bulletin/2017-03-01.html
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.14
- https://access.redhat.com/security/cve/CVE-2016-9793
- https://github.com/xairy/kernel-exploits/tree/master/CVE-2016-9793
- http://www.openwall.com/lists/oss-security/2016/12/03/1
- https://access.redhat.com/errata/RHSA-2017:0933
- http://www.securitytracker.com/id/1037968
- https://www.exploit-db.com/exploits/41995