What is CVE-2026-43070?

CVE-2026-43070 is a high-severity vulnerability in Linux, classified under Out-of-bounds Read. CVSS score: 7.8/10. Published 2026-05-05.

How severe is CVE-2026-43070?

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

Out-of-bounds Read in Linux

CVE-2026-43070

In the Linux kernel, the following vulnerability has been resolved: bpf: Reset register ID for BPF_END value tracking When a register undergoes a BPF_END (byte swap) operation, its scalar value is mutated in-place. If this register previ…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (2.3th 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 4c03342e5ac532fb34d13a7b51dd7261dfc48963, d00ce96623a69a100ad79675d0e85fda3c50d89b, 9d21199842247ab05c675fb9b6c6ca393a5c0024
Linux Linux_kernel — versions 7.0

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

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-2026-43070?: CVE-2026-43070 is a high-severity vulnerability in Linux, classified under Out-of-bounds Read. CVSS score: 7.8/10. Published 2026-05-05.
How severe is CVE-2026-43070?: High severity. CVSS v3 base score is 7.8 out of 10.