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CVE-2023-3640 A possible unauthorized memory access flaw was found in the Linux kernel's cpu_entry_area mapping of X86 CPU data to…
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.
Produits et versions touchés
| Produit | Versions touchées | Corrigé en |
|---|---|---|
| Red Hat Enterprise Linux 9 | Versions non publiées | |
| Red Hat Enterprise Linux 6 | Versions non publiées | |
| Red Hat Enterprise Linux 7 | Versions non publiées | |
| Red Hat Enterprise Linux 8 | Versions non publiées |
Références
- RHSA-2023:6583 access.redhat.com
- access.redhat.com access.redhat.com
- RHBZ#2217523 bugzilla.redhat.com
Chronologie
- Publiée
- Dernière modification
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