What is CVE-2026-43254?

CVE-2026-43254 is a high-severity vulnerability in Linux, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2026-05-06.

How severe is CVE-2026-43254?

High severity. CVSS v3 base score is 7.5 out of 10.

Integer overflow in Linux

CVE-2026-43254

In the Linux kernel, the following vulnerability has been resolved: ovpn: tcp - fix packet extraction from stream When processing TCP stream data in ovpn_tcp_recv, we receive large cloned skbs from __strp_rcv that may contain multiple co…

Vulnerability class: Integer Overflow

EPSS: 0.001 (15.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linux — versions 11851cbd60ea1e5abbd97619d69845ead99303d6, 6.16, 0
Linux Linux_kernel — versions 7.0

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

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-2026-43254?: CVE-2026-43254 is a high-severity vulnerability in Linux, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2026-05-06.
How severe is CVE-2026-43254?: High severity. CVSS v3 base score is 7.5 out of 10.