CVE-2019-12818 Null dereference in n/a

What is CVE-2019-12818?

CVE-2019-12818 is a high-severity vulnerability in Linux kernel, published on 14 Jun 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in the Linux kernel before 4.20.15. The nfc_llcp_build_tlv function in net/nfc/llcp_commands.c may return NULL. If the caller does not check for this, it will trigger a NULL pointer dereference. This will cause denial of service. This affects nfc_llcp_build_gb in net/nfc/llcp_core.c.

Weakness: CWE-476

Which versions are affected by CVE-2019-12818?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2019-12818?

Apply the vendor's patch.

Is CVE-2019-12818 being exploited?

There is no known exploitation of CVE-2019-12818 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-2019-12818, GHSA-fmqw-fhqm-wp2p, UBUNTU-CVE-2019-12818.