CVE-2013-4247

Name: CVE-2013-4247
Creator: NVD / NIST
Published: 2013-08-25T03:27:32.96+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.64%

Last modified Jun 16, 2026

CVE-2013-4247 is a vulnerability of currently unknown severity. Off-by-one error in the build_unc_path_to_root function in fs/cifs/connect.c in the Linux kernel before 3.9.6 allows remote attackers to cause a denial of service (memory corruption and system crash) via a DFS share mount operation that triggers use of an unexpected DFS referral name length.. EPSS estimates a 3.64% chance of exploitation in the next 30 days.

Description

Off-by-one error in the build_unc_path_to_root function in fs/cifs/connect.c in the Linux kernel before 3.9.6 allows remote attackers to cause a denial of service (memory corruption and system crash) via a DFS share mount operation that triggers use of an unexpected DFS referral name length.

Metrics

EPSS Probability

3.64%

88.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-189

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 3.8, < 3.9.6

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1fc29bacedeabb278080e31bb9c1ecb49f143c3b
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.9.6Vendor Advisory
http://www.openwall.com/lists/oss-security/2013/08/14/10Mailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=998401Issue Tracking, Third Party Advisory
https://github.com/torvalds/linux/commit/1fc29bacedeabb278080e31bb9c1ecb49f143c3bExploit, Patch, Third Party Advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1fc29bacedeabb278080e31bb9c1ecb49f143c3b
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.9.6Vendor Advisory
http://www.openwall.com/lists/oss-security/2013/08/14/10Mailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=998401Issue Tracking, Third Party Advisory
https://github.com/torvalds/linux/commit/1fc29bacedeabb278080e31bb9c1ecb49f143c3bExploit, Patch, Third Party Advisory

Timeline

Published: Aug 25, 2013
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2013-4247?

How severe is CVE-2013-4247?

Severity scoring for CVE-2013-4247 is pending analysis. The EPSS model estimates a 3.64% probability of exploitation in the next 30 days.

How do I fix CVE-2013-4247?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2013-4247?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST