CVE-2018-18653

unknown

Published — · Modified —

CVSS v3

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VIR risk

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Description

The Linux kernel, as used in Ubuntu 18.10 and when booted with UEFI Secure Boot enabled, allows privileged local users to bypass intended Secure Boot restrictions and execute untrusted code by loading arbitrary kernel modules. This occurs because a modified kernel/module.c, in conjunction with certain configuration options, leads to mishandling of the result of signature verification.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No vendor mitigations ingested yet for this CVE. The mitigation-content worker queues fetches as references arrive — check back in a few minutes, or see the references list below.

OS impact

OS	Version	Status	Fixed in
debian	bookworm	fixed	`5.4.6-1`
debian	bullseye	fixed	`5.4.6-1`
debian	forky	fixed	`5.4.6-1`
debian	sid	fixed	`5.4.6-1`
debian	trixie	fixed	`5.4.6-1`

References

https://security-tracker.debian.org/tracker/CVE-2018-18653

💬 Discuss CVE-2018-18653 on VIR Community →

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.