CVE-2016-8645

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

Severity Score

5.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The TCP stack in the Linux kernel before 4.8.10 mishandles skb truncation, which allows local users to cause a denial of service (system crash) via a crafted application that makes sendto system calls, related to net/ipv4/tcp_ipv4.c and net/ipv6/tcp_ipv6.c.

La pila TCP en el kernel Linux en versiones anteriores a 4.8.10 maneja incorrectamente el truncamiento skb, lo que permite a usuarios locales provocar una denegación de servicio (caída de sistema) a través de una aplicación manipulada que hace llamadas de sistema sendto, relacionado con net/ipv4/tcp_ipv4.c y net/ipv6/tcp_ipv6.c.

It was discovered that the Linux kernel since 3.6-rc1 with 'net.ipv4.tcp_fastopen' set to 1 can hit BUG() statement in tcp_collapse() function after making a number of certain syscalls leading to a possible system crash.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-10-12 CVE Reserved
2016-11-28 CVE Published
2023-03-08 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-284: Improper Access Control
CWE-617: Reachable Assertion

CAPEC

References (12)

URL	Tag	Source
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.10	Release Notes
http://www.openwall.com/lists/oss-security/2016/11/11/3	Mailing List
http://www.openwall.com/lists/oss-security/2016/11/30/3	Mailing List
http://www.securityfocus.com/bid/94264	Third Party Advisory
http://www.securitytracker.com/id/1037285	Vdb Entry

URL	Date	SRC

URL	Date	SRC
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ac6e780070e30e4c35bd395acfe9191e6268bdd3	2023-02-12
https://github.com/torvalds/linux/commit/ac6e780070e30e4c35bd395acfe9191e6268bdd3	2023-02-12

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2017:1842	2023-02-12
https://access.redhat.com/errata/RHSA-2017:2077	2023-02-12
https://access.redhat.com/errata/RHSA-2017:2669	2023-02-12
https://bugzilla.redhat.com/show_bug.cgi?id=1393904	2017-09-06
https://access.redhat.com/security/cve/CVE-2016-8645	2017-09-06

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				<= 4.8.9 Search vendor "Linux" for product "Linux Kernel" and version " <= 4.8.9"		-		Affected