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CentOS Linux: CVE-2023-0459: Important: kernel-rt security and bug fix update (Multiple Advisories)

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CentOS Linux: CVE-2023-0459: Important: kernel-rt security and bug fix update (Multiple Advisories)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
05/25/2023
Created
10/11/2023
Added
10/10/2023
Modified
10/10/2023

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

Solution(s)

  • centos-upgrade-kernel
  • centos-upgrade-kernel-rt

References

  • CVE-2023-0459

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