CVE-2023-1637 Information disclosure in Kernel

What is CVE-2023-1637?

CVE-2023-1637 is a medium-severity vulnerability in Linux kernel, published on 27 Mar 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A flaw that boot CPU could be vulnerable for the speculative execution behavior kind of attacks in the Linux kernel X86 CPU Power management options functionality was found in the way user resuming CPU from suspend-to-RAM. A local user could use this flaw to potentially get unauthorized access to some memory of the CPU similar to the speculative execution behavior kind of attacks.

Weakness: CWE-212, CWE-226

Which versions are affected by CVE-2023-1637?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2023-1637?

Apply the vendor's patch.

Is CVE-2023-1637 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-1637 exists.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2023-1637, GHSA-3hpj-266f-m43f, UBUNTU-CVE-2023-1637.