What’s Vulnerable › Vulnerabilities

CVE-2016-9313

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2016-11-28 · updated 2026-06-17
• Weakness: CWE-476

Description

security/keys/big_key.c in the Linux kernel before 4.8.7 mishandles unsuccessful crypto registration in conjunction with successful key-type registration, which allows local users to cause a denial of service (NULL pointer dereference and panic) or possibly have unspecified other impact via a crafted application that uses the big_key data type.

Affected products

• Linux kernel: from 4.7 before 4.8.7 — fixed in 4.8.7

How to fix

Upgrade to a fixed version: Linux kernel 4.8.7. Check the vendor advisory for mitigations.

References

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7df3e59c3d1df4f87fe874c7956ef7a3d2f4d5fb
• http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.7
• http://www.openwall.com/lists/oss-security/2016/07/22/1
• http://www.securityfocus.com/bid/94546
• https://github.com/torvalds/linux/commit/7df3e59c3d1df4f87fe874c7956ef7a3d2f4d5fb
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7df3e59c3d1df4f87fe874c7956ef7a3d2f4d5fb
• http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.7
• http://www.openwall.com/lists/oss-security/2016/07/22/1
• http://www.securityfocus.com/bid/94546
• https://github.com/torvalds/linux/commit/7df3e59c3d1df4f87fe874c7956ef7a3d2f4d5fb

Get alerted when CVE-2016-9313 or the next vulnerability affects your stack