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Ubuntu: USN-3522-3: Linux kernel regression

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Ubuntu: USN-3522-3: Linux kernel regression

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
01/10/2018
Created
07/25/2018
Added
01/11/2018
Modified
07/09/2020

Description

USN-3522-1 fixed a vulnerability in the Linux kernel to address Meltdown (CVE-2017-5754). Unfortunately, that update introduced a regression where a few systems failed to boot successfully. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Jann Horn discovered that microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Meltdown. A local attacker could use this to expose sensitive information, including kernel memory.

Solution(s)

  • ubuntu-upgrade-linux-image-4-4-0-109-generic
  • ubuntu-upgrade-linux-image-4-4-0-109-lowlatency
  • ubuntu-upgrade-linux-image-generic
  • ubuntu-upgrade-linux-image-lowlatency

References

  • USN-3522-1
  • USN-3522-3

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