Bug 1492593 (CVE-2017-14497) - CVE-2017-14497 kernel: buffer overflow in tpacket_rcv() in net/packet/af_packet.c
Summary: CVE-2017-14497 kernel: buffer overflow in tpacket_rcv() in net/packet/af_pack...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2017-14497
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1492594 1492602
Blocks: 1486438
TreeView+ depends on / blocked
 
Reported: 2017-09-18 09:34 UTC by Vladis Dronov
Modified: 2021-10-27 10:53 UTC (History)
21 users (show)

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.
Clone Of:
Environment:
Last Closed: 2021-10-27 10:53:21 UTC
Embargoed:

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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.
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