What is CVE-2026-43057?

CVE-2026-43057 is a high-severity vulnerability in Linux. CVSS score: 7.5/10. Published 2026-05-01.

How severe is CVE-2026-43057?

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

Vulnerability in Linux

CVE-2026-43057

In the Linux kernel, the following vulnerability has been resolved: net: correctly handle tunneled traffic on IPV6_CSUM GSO fallback NETIF_F_IPV6_CSUM only advertises support for checksum offload of packets without IPv6 extension headers…

EPSS: 0.001 (22.8th 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 6.6.103, 2156d9e9f2e483c8c3906c0ea57ea312c1424235, 6.6.134
Linux Linux_kernel — versions 6.17, 7.0

References

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

Frequently asked questions

What is CVE-2026-43057?: CVE-2026-43057 is a high-severity vulnerability in Linux. CVSS score: 7.5/10. Published 2026-05-01.
How severe is CVE-2026-43057?: High severity. CVSS v3 base score is 7.5 out of 10.