What is CVE-2026-31448?

CVE-2026-31448 is a critical-severity vulnerability in Linux, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 9.4/10. Published 2026-04-22.

How severe is CVE-2026-31448?

Critical severity. CVSS v3 base score is 9.4 out of 10.

Vulnerability in Linux

CVE-2026-31448

In the Linux kernel, the following vulnerability has been resolved: ext4: avoid infinite loops caused by residual data On the mkdir/mknod path, when mapping logical blocks to physical blocks, if inserting a new extent into the extent tre…

EPSS: 0.001 (22.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H.

Affected products

Linux — versions 315054f023d28ee64f308adf8b5737831541776b, 2.6.22, 0
Linux Linux_kernel — versions 2.6.22, 7.0

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

References

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

Frequently asked questions

What is CVE-2026-31448?: CVE-2026-31448 is a critical-severity vulnerability in Linux, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 9.4/10. Published 2026-04-22.
How severe is CVE-2026-31448?: Critical severity. CVSS v3 base score is 9.4 out of 10.