Vulnerability in Linux

CVE-2026-63893

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: property: Reject u32 wrap in tb_property_entry_valid() entry->value is u32 and entry->length is u16; the sum is performed in u32 and wraps. A malicious XDo…

EPSS: 0.002 (11.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

Affected products

  • Linux — versions cdae7c07e3e3509eaabc18c1640a55dc5b99c179, 4.15, 0

References

Frequently asked questions

What is CVE-2026-63893?
CVE-2026-63893 is a high-severity vulnerability in Linux. CVSS score: 8.1/10. Published 2026-07-19.
How severe is CVE-2026-63893?
High severity. CVSS v3 base score is 8.1 out of 10.