CVE-2019-12455 Null dereference in n/a
An unchecked memory allocation in the Linux kernel clock driver could theoretically cause a crash, though it is disputed as unexploitable by users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-12455?
CVE-2019-12455 is a medium-severity vulnerability in Linux kernel, published on 30 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 sunxi_divs_clk_setup in drivers/clk/sunxi/clk-sunxi.c in the Linux kernel through 5.1.5. There is an unchecked kstrndup of derived_name, which might allow an attacker to cause a denial of service (NULL pointer dereference and system crash). NOTE: This id is disputed as not being an issue because “The memory allocation that was not checked is part of a code that only runs at boot time, before user processes are started. Therefore, there is no possibility for an unprivileged user to control it, and no denial of service.”
Weakness: CWE-476
Which versions are affected by CVE-2019-12455?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2019-12455?
No fix published yet.
Is CVE-2019-12455 being exploited?
There is no known exploitation of CVE-2019-12455 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2019-12455, GHSA-r2qx-grq5-8x3g, ROOT-OS-DEBIAN-12-CVE-2019-12455, ROOT-OS-DEBIAN-13-CVE-2019-12455, UBUNTU-CVE-2019-12455.