CVE-2023-3640
CVSS V2 None
CVSS V3 None
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.
Overview
- CVE ID
- CVE-2023-3640
- Assigner
- redhat
- Vulnerability Status
- PUBLISHED
- Published Version
- 2023-07-24T15:19:29.983Z
- Last Modified Date
- 2024-04-25T12:21:36.635Z
Weakness Enumerations
References
| Reference URL | Reference Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2023-3640 | vdb-entry x_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2217523 | issue-tracking x_refsource_REDHAT |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2023-3640 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-3640 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2024-06-24 21:07:30 | Added to TrackCVE |