What’s Vulnerable › Vulnerabilities

CVE-2017-12193

• Severity: medium (CVSS 5.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-11-22 · updated 2026-06-17
• Weakness: CWE-476

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.

Affected products

• Linux kernel: before 4.13.11 — fixed in 4.13.11

How to fix

Upgrade to a fixed version: Linux kernel 4.13.11. Check the vendor advisory for mitigations.

References

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea6789980fdaa610d7eb63602c746bf6ec70cd2b
• http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.11
• http://www.securityfocus.com/bid/101678
• https://access.redhat.com/errata/RHSA-2018:0151
• https://bugzilla.redhat.com/show_bug.cgi?id=1501215
• https://github.com/torvalds/linux/commit/ea6789980fdaa610d7eb63602c746bf6ec70cd2b
• https://usn.ubuntu.com/3698-1/
• https://usn.ubuntu.com/3698-2/
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea6789980fdaa610d7eb63602c746bf6ec70cd2b
• http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.11
• http://www.securityfocus.com/bid/101678
• https://access.redhat.com/errata/RHSA-2018:0151

Get alerted when CVE-2017-12193 or the next vulnerability affects your stack