CVE-2023-0459CWE-763

Copy_from_user Spectre-V1 Gadget in Linux Kernel

Medium · published May 25, 2023

CVSS v3.1
6.5
EPSS
1%
Percentile
49.8
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00635 · 49.8th percentile
Weakness
CWE-763 · Release of Invalid Pointer or Reference
Published
2023-05-25T13:22Z
EPSS history
Timeline
  • 25 MAY 13:22Z
    Copy_from_user Spectre-V1 Gadget in Linux Kernel
    cvelistv5