CVE-2017-6347

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.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.08%
Third-Party Advisory kernel.org Third-Party Advisory kernel.org Third-Party Advisory openwall.com Third-Party Advisory securityfocus.com Third-Party Advisory redhat.com Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1427984 issue tracking patch vdb entry third party advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ca4ef4574f1ee5252e2cd365f8f5d5bafd048f32 third party advisory patch
http://www.openwall.com/lists/oss-security/2017/02/28/5 mailing list third party advisory patch
https://github.com/torvalds/linux/commit/ca4ef4574f1ee5252e2cd365f8f5d5bafd048f32 third party advisory patch
http://www.securityfocus.com/bid/96487 vdb entry third party advisory
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.1 release notes third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2017-6347?
CVE-2017-6347 has been scored as a high severity vulnerability.
How to fix CVE-2017-6347?
To fix CVE-2017-6347, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-6347 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-6347 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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