What’s Vulnerable › Vulnerabilities

CVE-2022-3623: Linux Kernel BPF gup.c follow_page_pte race condition

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-10-20 · updated 2026-06-17
• Weakness: CWE-362

Description

A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this vulnerability is the function follow_page_pte of the file mm/gup.c of the component BPF. The manipulation leads to race condition. The attack can be launched remotely. It is recommended to apply a patch to fix this issue. The identifier VDB-211921 was assigned to this vulnerability.

Affected products

• Debian Linux: 11.0
• Linux kernel: from 5.1 before 5.4.228; from 5.5 before 5.10.159; from 5.11 before 5.15.78; from 5.16 before 5.19.17; from 6.0 before 6.0.3 — fixed in 5.10.159, 5.15.78, 5.19.17, 5.4.228, 6.0.3

How to fix

Upgrade to a fixed version: Linux kernel 5.10.159, 5.15.78, 5.19.17, 5.4.228. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/commit/?id=fac35ba763ed07ba93154c95ffc0c4a55023707f
• https://lists.debian.org/debian-lts-announce/2023/03/msg00000.html
• https://vuldb.com/?id.211921
• https://www.debian.org/security/2023/dsa-5324
• https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git/commit/?id=fac35ba763ed07ba93154c95ffc0c4a55023707f
• https://lists.debian.org/debian-lts-announce/2023/03/msg00000.html
• https://vuldb.com/?id.211921
• https://www.debian.org/security/2023/dsa-5324

Get alerted when CVE-2022-3623 or the next vulnerability affects your stack