CVE-2023-0459
Copy_from_user Spectre-V1 Gadget in Linux Kernel
- State
- Published
- Severity
- 6.5 Medium
- Published
- May 25, 2023
- Updated
- Sep 26, 2024
- Reserved
- Jan 24, 2023
Description
Copy_from_user on 64-bit versions of the Linux kernel does not implement the __uaccess_begin_nospec allowing a user to bypass the "access_ok" check and pass a kernel pointer to copy_from_user(). This would allow an attacker to leak information. We recommend upgrading beyond commit 74e19ef0ff8061ef55957c3abd71614ef0f42f47
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Weaknesses
- CWE-763 Release of Invalid Pointer or Reference
Affected Products
| Product | Versions |
|---|---|
Linux KernelLinux |
|
References
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