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CVE-2017-6347

Published: Mar 1, 2017

Modified: Aug 5, 2024

PUBLISHED

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.

Vendor	Product	Versions
n/a	n/a	affected `n/a`

References

https://bugzilla.redhat.com/show_bug.cgi?id=1427984

x_refsource_CONFIRM

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ca4ef4574f1ee5252e2cd365f8f5d5bafd048f32

x_refsource_CONFIRM

[oss-security] 20170228 Linux: ip: fix IP_CHECKSUM handling (CVE-2017-6347)

mailing-list

x_refsource_MLIST

https://github.com/torvalds/linux/commit/ca4ef4574f1ee5252e2cd365f8f5d5bafd048f32

x_refsource_CONFIRM

vdb-entry

x_refsource_BID

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.1

x_refsource_CONFIRM

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