CVE-2019-20172 Privilege escalation in n/a

High 7.8 Published 31 Dec 2019 Updated 5 Aug 2024

Local attackers can gain privileges by exploiting a kernel memory management flaw that fails to reject invalid syscall pointers.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2019-20172?

CVE-2019-20172 is a high-severity vulnerability in n/a, published on 31 Dec 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Kernel/VM/MemoryManager.cpp in SerenityOS before 2019-12-30 does not reject syscalls with pointers into the kernel-only virtual address space, which allows local users to gain privileges by overwriting a return address that was found on the kernel stack.

Weakness: CWE-119

Which versions are affected by CVE-2019-20172?

It affects 1 product.

Products include Serenityos Serenityos.

How do I fix CVE-2019-20172?

No fix has been published for CVE-2019-20172 yet. Limit exposure of the affected software until one is available.

Is CVE-2019-20172 being exploited?

There is no known exploitation of CVE-2019-20172 in the wild and no public exploit code.

Sources

Also known as GHSA-rf88-p934-8hgp.