CVE-2016-9793
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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 1.56% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 74.8% of scored records. A rank, not a probability.
- NVD base score
- 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2016-12-28 07:42Z9 YR AGO
- Last updated
- 2024-08-06 02:59Z2 YR AGO
- Reserved
- 2016-12-02
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 4de4bb3ed4f2e81684b622356a9c9aeaee254b13d3c205a9fd087f5b073b54bf
05 Affected products
06 References
- github.comhttps://github.com/torvalds/linux/commit/b98b0bc8c431e3ceb4b26b0dfc8db509518fb290
- www.securitytracker.com1037968http://www.securitytracker.com/id/1037968
- git.kernel.orghttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b98b0bc8c431e3ceb4b26b0dfc8db509518fb290
- access.redhat.comRHSA-2017:0932https://access.redhat.com/errata/RHSA-2017:0932
- github.comhttps://github.com/xairy/kernel-exploits/tree/master/CVE-2016-9793
- www.securityfocus.com94655http://www.securityfocus.com/bid/94655
- www.openwall.com[oss-security] 20161202 Re: CVE Request: Linux: signed overflows for SO_{SND|RCV}BUFFORCEhttp://www.openwall.com/lists/oss-security/2016/12/03/1
- www.kernel.orghttp://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.14
- access.redhat.comRHSA-2017:0933https://access.redhat.com/errata/RHSA-2017:0933
- access.redhat.comRHSA-2017:0931https://access.redhat.com/errata/RHSA-2017:0931
- source.android.comhttps://source.android.com/security/bulletin/2017-03-01.html
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1402013
07 Fixed in
Debian 12
- linux Fixed in 4.8.15-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 4.8.15-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 4.8.15-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- linux Fixed in 3.13.0-107.154
- linux-lts-vivid Fixed in 3.19.0-79.87~14.04.1
- linux-lts-xenial Fixed in 4.4.0-59.80~14.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- linux Fixed in 4.4.0-59.80
- linux-aws Fixed in 4.4.0-1003.12
- linux-raspi2 Fixed in 4.4.0-1040.47
- linux-snapdragon Fixed in 4.4.0-1044.48
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.