CVE-2017-12193 Null dereference in Linux kernel since 3.13 up to 4.14 (not including)

What is CVE-2017-12193?

CVE-2017-12193 is a medium-severity vulnerability in Linux kernel, published on 22 Nov 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The assoc_array_insert_into_terminal_node function in lib/assoc_array.c in the Linux kernel before 4.13.11 mishandles node splitting, which allows local users to cause a denial of service (NULL pointer dereference and panic) via a crafted application, as demonstrated by the keyring key type, and key addition and link creation operations.

Weakness: CWE-476

Which versions are affected by CVE-2017-12193?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2017-12193?

Apply the vendor's patch.

Is CVE-2017-12193 being exploited?

There is no known exploitation of CVE-2017-12193 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-2017-12193, GHSA-7c55-6mqj-q569, UBUNTU-CVE-2017-12193.