What is CVE-2026-52971?

CVE-2026-52971 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.8/10. Published 2026-06-24.

How severe is CVE-2026-52971?

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

Use After Free in Linux

CVE-2026-52971

In the Linux kernel, the following vulnerability has been resolved: net: ena: PHC: Fix potential use-after-free in get_timestamp Move the phc->active check and resp pointer assignment to after acquiring the spinlock. Previously, phc->act…

Vulnerability class: Use-After-Free

EPSS: 0.001 (3.2th 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 e0ea34158ee8c4f7536cd781010339ff28c0d24c, 6.17, 0
Linux Linux_kernel — versions 7.1

Weakness classification (CWE)

CWE-416 — Use After Free

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2026-52971?: CVE-2026-52971 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.8/10. Published 2026-06-24.
How severe is CVE-2026-52971?: High severity. CVSS v3 base score is 7.8 out of 10.