CVE-2013-4247 Memory corruption in n/a

What is CVE-2013-4247?

CVE-2013-4247 is a high-severity memory corruption vulnerability in Linux kernel, published on 25 Aug 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-189

Which versions are affected by CVE-2013-4247?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2013-4247?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2013-4247 being exploited?

There is no known exploitation of CVE-2013-4247 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2013-4247, GHSA-cf8v-r742-2v78.