CVE-2023-3108 Kernel: a race condition in crypto module in the function skcipher_recvmsg

What is CVE-2023-3108?

CVE-2023-3108 is a medium-severity vulnerability in Linux kernel, published on 11 Jul 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A flaw was found in the subsequent get_user_pages_fast in the Linux kernel’s interface for symmetric key cipher algorithms in the skcipher_recvmsg of crypto/algif_skcipher.c function. This flaw allows a local user to crash the system.

Weakness: CWE-400, CWE-362

Which versions are affected by CVE-2023-3108?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2023-3108?

Apply the vendor's patch.

Is CVE-2023-3108 being exploited?

There is no known exploitation of CVE-2023-3108 in the wild and no public exploit code.

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-2023-3108, GHSA-m8r7-5c4p-r8g4, UBUNTU-CVE-2023-3108.