What is CVE-2026-63857?

CVE-2026-63857 is a critical-severity vulnerability in Linux. CVSS score: 9.8/10. Published 2026-07-19.

How severe is CVE-2026-63857?

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

Vulnerability in Linux

CVE-2026-63857

In the Linux kernel, the following vulnerability has been resolved: net: airoha: Do not read uninitialized fragment address in airoha_dev_xmit() The transmit loop in airoha_dev_xmit() reads fragment address and length during its final it…

EPSS: 0.002 (5.1th 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 23020f04932701d5c8363e60756f12b43b8ed752, 6.11, 0

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67

Frequently asked questions

What is CVE-2026-63857?: CVE-2026-63857 is a critical-severity vulnerability in Linux. CVSS score: 9.8/10. Published 2026-07-19.
How severe is CVE-2026-63857?: Critical severity. CVSS v3 base score is 9.8 out of 10.