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Amazon Linux AMI: CVE-2023-0459: Security patch for kernel (ALAS-2023-1706)

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Amazon Linux AMI: CVE-2023-0459: Security patch for kernel (ALAS-2023-1706)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
03/17/2023
Created
05/05/2023
Added
05/02/2023
Modified
07/14/2023

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)

  • amazon-linux-upgrade-kernel

References

  • ALAS-2023-1706
  • CVE-2023-0459

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