What is CVE-2026-23066?

CVE-2026-23066 is a high-severity vulnerability in Linux, classified under Uncontrolled Recursion. CVSS score: 7.8/10. Published 2026-02-04.

How severe is CVE-2026-23066?

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

Vulnerability in Linux

CVE-2026-23066

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix recvmsg() unconditional requeue If rxrpc_recvmsg() fails because MSG_DONTWAIT was specified but the call at the front of the recvmsg queue already has its mut…

EPSS: 0.001 (2.9th 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 540b1c48c37ac0ad66212004db21e1ff7e2d78be, 5.15.209, 6.1.175
Linux Linux_kernel — versions 6.19

Weakness classification (CWE)

CWE-674 — Uncontrolled Recursion

References

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

Frequently asked questions

What is CVE-2026-23066?: CVE-2026-23066 is a high-severity vulnerability in Linux, classified under Uncontrolled Recursion. CVSS score: 7.8/10. Published 2026-02-04.
How severe is CVE-2026-23066?: High severity. CVSS v3 base score is 7.8 out of 10.