What is CVE-2026-43185?

CVE-2026-43185 is a critical-severity vulnerability in Linux, classified under Uncontrolled Recursion. CVSS score: 9.8/10. Published 2026-05-06.

How severe is CVE-2026-43185?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Linux

CVE-2026-43185

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix signededness bug in smb_direct_prepare_negotiation() smb_direct_prepare_negotiation() casts an unsigned __u32 value from sp->max_recv_size and req->preferred_…

EPSS: 0.001 (16.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions 0626e6641f6b467447c81dd7678a69c66f7746cf, 5.15, 0
Linux Linux_kernel — versions 7.0

Weakness classification (CWE)

CWE-674 — Uncontrolled Recursion

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-2026-43185?: CVE-2026-43185 is a critical-severity vulnerability in Linux, classified under Uncontrolled Recursion. CVSS score: 9.8/10. Published 2026-05-06.
How severe is CVE-2026-43185?: Critical severity. CVSS v3 base score is 9.8 out of 10.