CVE-2023-21228
CVSS 3.1 Score 9.8 of 10 (high)
Details
Published Dec 4, 2023
Updated: Dec 22, 2023
Summary
CVE-2023-21228 is a recently disclosed vulnerability affecting the Linux kernel. In the PMRChangeSparseMemOSMem function of physmem_osmem_linux.c, a boundary check error has been identified. This issue results in a possible out-of-bounds write, enabling a local privilege escalation in the kernel. Notably, no additional execution privileges are required for exploitation. Users are encouraged to apply the necessary patches to mitigate this risk.
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