What is CVE-2026-63801?

CVE-2026-63801 is a high-severity vulnerability in Linux. CVSS score: 8.8/10. Published 2026-07-19.

How severe is CVE-2026-63801?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Linux

CVE-2026-63801

In the Linux kernel, the following vulnerability has been resolved: tipc: fix slab-use-after-free Read in tipc_aead_decrypt_done tipc_aead_decrypt() goes straight from tipc_bearer_hold(b) to crypto_aead_decrypt(req) without taking a refe…

EPSS: 0.002 (7.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions fc1b6d6de2208774efd2a20bf0daddb02d18b1e0, 5.5, 0

References

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

Frequently asked questions

What is CVE-2026-63801?: CVE-2026-63801 is a high-severity vulnerability in Linux. CVSS score: 8.8/10. Published 2026-07-19.
How severe is CVE-2026-63801?: High severity. CVSS v3 base score is 8.8 out of 10.