What is CVE-2026-63818?

CVE-2026-63818 is a high-severity vulnerability in Linux. CVSS score: 8.4/10. Published 2026-07-19.

How severe is CVE-2026-63818?

High severity. CVSS v3 base score is 8.4 out of 10.

Vulnerability in Linux

CVE-2026-63818

In the Linux kernel, the following vulnerability has been resolved: f2fs: validate orphan inode entry count f2fs_recover_orphan_inodes() trusts the orphan block entry_count when replaying orphan inodes from the checkpoint pack. A corrupt…

EPSS: 0.002 (5.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions 127e670abfa7fa150f6550d620ded930f5bdb4e7, 3.8, 0

References

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-2026-63818?: CVE-2026-63818 is a high-severity vulnerability in Linux. CVSS score: 8.4/10. Published 2026-07-19.
How severe is CVE-2026-63818?: High severity. CVSS v3 base score is 8.4 out of 10.