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CVE-2016-8645

16
FAUCET Score

CVE-2016-8645 is a denial-of-service vulnerability affecting the TCP stack in the Linux kernel prior to version 4.8.10. A local attacker can exploit this flaw by crafting an application that makes specific sendto system calls, leading to a system crash. This vulnerability has a CVSS score of 5.5 (Medium), indicating a low attack complexity and requiring local access, with the primary impact being high availability loss. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.8.9CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.46%
Probability of exploitation in next 30 days
EPSS Percentile
37.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0046 is in the 91st percentile among its peer group of 15,938 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt-0:3.10.0-693.rt56.617.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-0:3.10.0-693.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise MRG 2Fixed in: kernel-rt-1:3.10.0-693.2.1.rt56.585.el6rt
View patch

Vendor Advisories (1)

redhatCVE-2016-8645Moderate

kernel: a BUG() statement can be hit in net/ipv4/tcp_input.c

Nov 10, 2016

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
Issue TrackingPatchVendor Advisory
access.redhat.com / errata/RHSA-2017:1842
access.redhat.com / errata/RHSA-2017:2077
access.redhat.com / errata/RHSA-2017:2669
bugzilla.redhat.com / show_bug.cgi
Issue Tracking
github.com / torvalds/linux/commit/ac6e780070e30e4c35bd395acfe9191e6268bdd3
Issue TrackingPatchThird Party Advisory
kernel.org / pub/linux/kernel/v4.x/ChangeLog-4.8.10
Release Notes
openwall.com / lists/oss-security/2016/11/11/3
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/11/30/3
securityfocus.com / bid/94264
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037285