CVE-2016-9313
kernel: security/keys/big_key.c mishandles unsuccessful crypto registration
Severity
ModerateRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · July 22, 2016
Updated · November 21, 2025
Description
The implementation of big key management in 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.
Statement
This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5,6 and 7 as the code with the flaw is not present in the products listed.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.0 · 5.5CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 · 4.7AV:L/AC:M/Au:N/C:N/I:N/A:C
CWE-476 · NULL Pointer Dereference