High severity7.8NVD Advisory· Published Dec 31, 2019· Updated Jun 17, 2026
CVE-2019-20172
CVE-2019-20172
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.
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Affected products
2- SerenityOS/SerenityOSdescription
Patches
Vulnerability mechanics
References
2- github.com/SerenityOS/serenity/commit/0fc24fe2564736689859e7edfa177a86dac36bf9nvdPatchThird Party Advisory
- github.com/Fire30/CTF-WRITEUPS/tree/master/36c3_ctf/wisdomnvdExploitThird Party Advisory
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