What is CVE-2017-7477?

CVE-2017-7477 is a High severity Linux kernel vulnerability with a CVSS score of 7.0 out of 10, classified as a Buffer Overflow flaw (CWE-119). CVE-2017-7477 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2017-7477?

CVE-2017-7477 has a CVSS score of 7.0 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2017-7477?

No patch is currently available for CVE-2017-7477. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2017-7477 actively exploited?

CVE-2017-7477 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/119.html

CVE-2017-7477

High

Heap-based buffer overflow in drivers/net/macsec.c in the MACsec module in the Linux kernel through 4.10.12 allows attackers to cause a denial of service or possibly have unspecified other impact by leveraging the use of a MAX_SKB_FRAGS+1 size in conjunction with the NETIF_F_FRAGLIST feature, leading to an error in the skb_to_sgvec function.

Package Linux Kernel

Published 2017-04-25

Last modified 2026-05-13

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.0

out of 10

High

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-119

CVE-2017-7477 is a Buffer Overflow vulnerability

What is Buffer Overflow?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2017-7477 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/98014

Third Party Advisory VDB Entry
Securitytracker
http://www.securitytracker.com/id/1038500

Third Party Advisory VDB Entry
Red Hat
https://access.redhat.com/errata/RHSA-2017:1615

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2017:1616

Third Party Advisory
Kernel patch commit
https://bugzilla.redhat.com/show_bug.cgi?id=1445207
Patch
Kernel patch commit
https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=4d6fa57b4dab0d77f4d8e9d9c73d1e63f6fe8fee
Patch
Kernel patch commit
https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=5294b83086cc1c35b4efeca03644cf9d12282e5b
Patch

Details

CVE ID CVE-2017-7477

Severity High

CVSS score 7.0 / 10

CVSS version 3.1

Published 2017-04-25

Modified 2026-05-13

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2017-7477?

CVE-2017-7477 is a High severity Linux kernel vulnerability with a CVSS score of 7.0 out of 10 , classified as a Buffer Overflow flaw (CWE-119) . CVE-2017-7477 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2017-7477?

CVE-2017-7477 has a CVSS score of 7.0 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2017-7477?

No patch is currently available for CVE-2017-7477. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2017-7477 actively exploited?

No — CVE-2017-7477 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. View CWE-119 on MITRE CWE →