CVE Published: 24/07/2023 |
CVE Updated: 23/09/2024 |
CVE Year: 2023 Source: redhat |
Vendor: Red Hat |
Product: Red Hat Enterprise Linux 6 Status : PUBLISHED
CVE-2023-3640 Description
A possible unauthorized memory access flaw was found in the Linux kernel\'s cpu_entry_area mapping of X86 CPU data to memory, where a user may guess the location of exception stacks or other important data. Based on the previous CVE-2023-0597, the \'Randomize per-cpu entry area\' feature was implemented in /arch/x86/mm/cpu_entry_area.c, which works through the init_cea_offsets() function when KASLR is enabled. However, despite this feature, there is still a risk of per-cpu entry area leaks. This issue could allow a local user to gain access to some important data with memory in an expected location and potentially escalate their privileges on the system.