CVE-2020-14305 Memory corruption in kernel

What is CVE-2020-14305?

CVE-2020-14305 is a high-severity memory corruption vulnerability in Linux kernel, published on 2 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An out-of-bounds memory write flaw was found in how the Linux kernel’s Voice Over IP H.323 connection tracking functionality handled connections on ipv6 port 1720. This flaw allows an unauthenticated remote user to crash the system, causing a denial of service. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

Weakness: CWE-787

Which versions are affected by CVE-2020-14305?

It affects 6 products.

Products include Linux kernel, Netapp A250 Firmware, Netapp Aff 500f Firmware, Netapp Cloud Backup, Netapp Fas 500f Firmware, Netapp Solidfire Baseboard Management Controller Firmware.

How do I fix CVE-2020-14305?

Apply the vendor's patch.

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

Is CVE-2020-14305 being exploited?

There is no known exploitation of CVE-2020-14305 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 A-174904512, ASB-A-174904512, DEBIAN-CVE-2020-14305, GHSA-44qh-vx3p-466m, UBUNTU-CVE-2020-14305.