CVE-2019-20172

Published: Dec 31, 2019Modified: Jun 17, 2026

7.8

Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability: 1.8 / Impact: 5.9

Source: NVD

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.

Affected (1)

Products: Serenityos: Serenityos

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Serenityos Serenityos	Before 2019-12-30

Related CWEs

Improper Restriction of Operations within the Bounds of a Memory Buffer

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

References (4)

https://github.com/Fire30/CTF-WRITEUPS/tree/master/36c3_ctf/wisdom

Source: cve@mitre.org

ExploitThird Party Advisory

https://github.com/SerenityOS/serenity/commit/0fc24fe2564736689859e7edfa177a86dac36bf9

Source: cve@mitre.org

PatchThird Party Advisory

https://github.com/Fire30/CTF-WRITEUPS/tree/master/36c3_ctf/wisdom

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitThird Party Advisory

https://github.com/SerenityOS/serenity/commit/0fc24fe2564736689859e7edfa177a86dac36bf9

Source: af854a3a-2127-422b-91ae-364da2661108

PatchThird Party Advisory

Timeline

No history available yet.