CVE-2016-9793
Last modified
CVE-2016-9793 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. EPSS estimates a 1.57% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.5, < 3.12.69 |
| Linux | Linux Kernel | >= 3.13, < 3.16.40 |
| Linux | Linux Kernel | >= 3.17, < 3.18.52 |
| Linux | Linux Kernel | >= 3.19, < 4.1.50 |
| Linux | Linux Kernel | >= 4.2, < 4.4.38 |
| Linux | Linux Kernel | >= 4.5, < 4.8.14 |
References
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.14Release Notes, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2016/12/03/1Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/94655Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037968Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:0931Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:0932Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:0933Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1402013Issue Tracking, Third Party Advisory
- https://github.com/torvalds/linux/commit/b98b0bc8c431e3ceb4b26b0dfc8db509518fb290Patch, Vendor Advisory
- https://github.com/xairy/kernel-exploits/tree/master/CVE-2016-9793Third Party Advisory
- https://source.android.com/security/bulletin/2017-03-01.htmlThird Party Advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.14Release Notes, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2016/12/03/1Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/94655Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037968Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:0931Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:0932Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:0933Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1402013Issue Tracking, Third Party Advisory
- https://github.com/torvalds/linux/commit/b98b0bc8c431e3ceb4b26b0dfc8db509518fb290Patch, Vendor Advisory
- https://github.com/xairy/kernel-exploits/tree/master/CVE-2016-9793Third Party Advisory
- https://source.android.com/security/bulletin/2017-03-01.htmlThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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