What is CVE-2017-6347?

CVE-2017-6347 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Out-of-bounds Read flaw (CWE-125). CVE-2017-6347 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2017-6347?

CVE-2017-6347 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2017-6347?

No patch is currently available for CVE-2017-6347. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2017-6347 actively exploited?

CVE-2017-6347 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Read (CWE-125)?

The product reads data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/125.html

CVE-2017-6347

High

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.

Package Linux Kernel

Published 2017-03-01

Last modified 2026-05-13

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-125

CVE-2017-6347 is a Out-of-bounds Read vulnerability

What is Out-of-bounds Read?

The product reads data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2017-6347 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Securityfocus
http://www.securityfocus.com/bid/96487

Third Party Advisory VDB Entry
Kernel patch commit
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ca4ef4574f1ee5252e2cd365f8f5d5bafd048f32
Patch
Kernel patch commit
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.1
Patch
Kernel patch commit
http://www.openwall.com/lists/oss-security/2017/02/28/5
Patch

5 patch commits total View all on NVD

Details

CVE ID CVE-2017-6347

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2017-03-01

Modified 2026-05-13

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2017-6347?

CVE-2017-6347 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Out-of-bounds Read flaw (CWE-125) . CVE-2017-6347 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2017-6347?

CVE-2017-6347 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2017-6347?

No patch is currently available for CVE-2017-6347. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2017-6347 actively exploited?

No — CVE-2017-6347 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Out-of-bounds Read (CWE-125)?

The product reads data past the end or before the beginning of the intended buffer. View CWE-125 on MITRE CWE →