CVEvulnerability
CVE-2019-20172
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2019-12-31
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 4.6 MEDIUM — AV:L/AC:L/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-119
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 configurations
• serenityos serenityos (< 2019-12-30)
Related
Weakness · CWE (1)
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer weakness
References
- https://github.com/Fire30/CTF-WRITEUPS/tree/master/36c3_ctf/wisdom Exploit, Third Party Advisory
- https://github.com/SerenityOS/serenity/commit/0fc24fe2564736689859e7edfa177a86dac36bf9 Patch, Third Party Advisory
- https://github.com/Fire30/CTF-WRITEUPS/tree/master/36c3_ctf/wisdom Exploit, Third Party Advisory
- https://github.com/SerenityOS/serenity/commit/0fc24fe2564736689859e7edfa177a86dac36bf9 Patch, Third Party Advisory