CVE-2019-20806 Null dereference in n/a

What is CVE-2019-20806?

CVE-2019-20806 is a medium-severity vulnerability in Linux kernel, published on 27 May 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An issue was discovered in the Linux kernel before 5.2. There is a NULL pointer dereference in tw5864_handle_frame() in drivers/media/pci/tw5864/tw5864-video.c, which may cause denial of service, aka CID-2e7682ebfc75.

Weakness: CWE-476

Which versions are affected by CVE-2019-20806?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2019-20806?

Apply the vendor's patch.

Is CVE-2019-20806 being exploited?

There is no known exploitation of CVE-2019-20806 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-2019-20806, GHSA-2gmw-gg2v-3ffg, UBUNTU-CVE-2019-20806.