CVE-2023-0459: medium-severity vulnerability in Linux Kernel
Copy_from_user Spectre-V1 Gadget in Linux Kernel
Published · Updated
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.6%
exploitation probability
0.6%top 50% of all CVEs
observed exploitation
nono source reports it
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
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected products
Linux · Linux KernelRelated CVEs — Linux Kernel
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