CVSS 3.1 Score 7.0 of 10 (high)


Published Jul 24, 2023
Updated: Nov 7, 2023
CWE ID 203


CVE-2023-3640 is a vulnerability that affects the Linux kernel's cpu_entry_area mapping of X86 CPU data to memory. This vulnerability allows a local user to guess the location of exception stacks or other important data, potentially gaining unauthorized access and escalating privileges on the system. The issue persists despite the implementation of the 'Randomize per-cpu entry area' feature when KASLR is enabled. Multiple products are affected, including eCJhJy, aXjN6B, eCJhKK, sgaPme, d0rE62, and nv-TCv. To remediate this vulnerability, it is recommended to apply the necessary security updates provided by the respective product vendors. The severity of this vulnerability is rated as HIGH, with a base score of 7.0 according to CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.


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