CVE-2023-0459 — Copy_from_user Spectre-V1 Gadget in Linux Kernel
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 …
Published: 2023-05-25 · CVSS: 6.5 · CVSS 3.1
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
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7