Bug 1492593 (CVE-2017-14497)

Summary:	CVE-2017-14497 kernel: buffer overflow in tpacket_rcv() in net/packet/af_packet.c
Product:	[Other] Security Response	Reporter:	Vladis Dronov <vdronov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	airlied, ajax, bskeggs, eparis, esandeen, hdegoede, ichavero, itamar, jarodwilson, jforbes, jonathan, josef, jwboyer, kernel-maint, linville, mchehab, mjg59, ppandit, quintela, sbrivio, steved
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	A buffer overflow was discovered in tpacket_rcv() function in the Linux kernel since v4.6-rc1 through v4.13. A number of socket-related syscalls can be made to set up a configuration when each packet received by a network interface can cause writing up to 10 bytes to a kernel memory outside of a kernel buffer. This can cause unspecified kernel data corruption effects, including damage of in-memory and on-disk XFS data.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-27 10:53:21 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1492594, 1492602
Bug Blocks:	1486438

Description Vladis Dronov 2017-09-18 09:34:03 UTC

A buffer overflow was discovered in tpacket_rcv() function in the Linux kernel since v4.6-rc1 through v4.13. A number of socket-related syscalls can be made to set up a configuration when each packet received by a network interface can cause writing up to 10 bytes to a kernel memory outside of a kernel buffer. This can cause unspecified kernel data corruption effects, including damage of in-memory and on-disk XFS data.

References:

https://marc.info/?l=linux-kernel&m=150394500728906&w=2

https://marc.info/?t=150394517700001&r=1&w=2

http://seclists.org/oss-sec/2017/q3/476

A kernel patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=edbd58be15a957f6a760c4a514cd475217eb97fd

Comment 1 Vladis Dronov 2017-09-18 09:35:02 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1492594]

Comment 3 Vladis Dronov 2017-09-18 09:50:34 UTC

Statement:

This issue does not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5, 6, 7 and MRG-2 as the code with the flaw is not present in this product.