CVE-2017-6347

 

Published at: - 01-03-2017 09:59

Last modified: - 26-10-2022 01:44

Total changes: - 3

Description

The ip_cmsg_recv_checksum function in net/ipv4/ip_sockglue.c in the Linux kernel before 4.10.1 has incorrect expectations about skb data layout, which allows local users to cause a denial of service (buffer over-read) or possibly have unspecified other impact via crafted system calls, as demonstrated by use of the MSG_MORE flag in conjunction with loopback UDP transmission.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://github.com/torvalds/linux/commit/ca4ef4574f1ee5252e2cd365f8f5d5bafd048f32
• https://bugzilla.redhat.com/show_bug.cgi?id=1427984
• [oss-security] 20170228 Linux: ip: fix IP_CHECKSUM handling (CVE-2017-6347)-Mailing List, Patch, Third Party Advisory
• http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.1
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ca4ef4574f1ee5252e2cd365f8f5d5bafd048f32
• 96487-

 

Keywords

NVD

 

CVE-2017-6347

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures