CVE-2023-0459
Last modified
CVE-2023-0459 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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. EPSS estimates a 0.64% chance of exploitation in the next 30 days.
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
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 4.14.307 |
| Linux | Linux Kernel | >= 4.19.0, < 4.19.274 |
| Linux | Linux Kernel | >= 5.4.0, < 5.4.233 |
| Linux | Linux Kernel | >= 5.10.0, < 5.10.170 |
| Linux | Linux Kernel | >= 5.15.0, < 5.15.96 |
| Linux | Linux Kernel | >= 6.1.0, < 6.1.14 |
| Linux | Linux Kernel | >= 6.2.0, < 6.2.1 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
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