What is CVE-2026-46242?

CVE-2026-46242 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.8/10. Published 2026-05-30.

How severe is CVE-2026-46242?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2026-46242 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Use After Free in Linux

CVE-2026-46242

In the Linux kernel, the following vulnerability has been resolved: eventpoll: fix ep_remove struct eventpoll / struct file UAF ep_remove() (via ep_remove_file()) cleared file->f_ep under file->f_lock but then kept using @file inside the…

Vulnerability class: Use-After-Free

EPSS: 0.001 (2.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions 5.15.209, 7.1-rc1, 6.1.175
Linux Linux_kernel

Weakness classification (CWE)

CWE-416 — Use After Free

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2026-46242?: CVE-2026-46242 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.8/10. Published 2026-05-30.
How severe is CVE-2026-46242?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2026-46242 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.