CVE-2019-12381 Null dereference in n/a

What is CVE-2019-12381?

CVE-2019-12381 is a medium-severity vulnerability in Linux kernel, published on 28 May 2019. 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 ip_ra_control in net/ipv4/ip_sockglue.c in the Linux kernel through 5.1.5. There is an unchecked kmalloc of new_ra, which might allow an attacker to cause a denial of service (NULL pointer dereference and system crash). NOTE: this is disputed because new_ra is never used if it is NULL

Weakness: CWE-476

Which versions are affected by CVE-2019-12381?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2019-12381?

Apply the vendor's patch.

Is CVE-2019-12381 being exploited?

There is no known exploitation of CVE-2019-12381 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-2019-12381, GHSA-5xx2-hrc4-gfq8, ROOT-OS-DEBIAN-12-CVE-2019-12381, ROOT-OS-DEBIAN-13-CVE-2019-12381, UBUNTU-CVE-2019-12381.