What is CVE-2026-31463?

CVE-2026-31463 is a critical-severity vulnerability in Linux. CVSS score: 9.8/10. Published 2026-04-22.

How severe is CVE-2026-31463?

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

Vulnerability in Linux

CVE-2026-31463

In the Linux kernel, the following vulnerability has been resolved: iomap: fix invalid folio access when i_blkbits differs from I/O granularity Commit aa35dd5cbc06 ("iomap: fix invalid folio access after folio_end_read()") partially addr…

EPSS: 0.001 (19.3th 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 b2f35ac4146d32d4424aaa941bbc681f12c1b9e6, 6.19, 0
Linux Linux_kernel — versions 7.0

References

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

Frequently asked questions

What is CVE-2026-31463?: CVE-2026-31463 is a critical-severity vulnerability in Linux. CVSS score: 9.8/10. Published 2026-04-22.
How severe is CVE-2026-31463?: Critical severity. CVSS v3 base score is 9.8 out of 10.