What is CVE-2026-64158?

CVE-2026-64158 is a high-severity vulnerability in Linux. CVSS score: 7.3/10. Published 2026-07-19.

How severe is CVE-2026-64158?

High severity. CVSS v3 base score is 7.3 out of 10.

Vulnerability in Linux

CVE-2026-64158

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix write streaming disablement if fd open O_RDWR In netfs_perform_write(), "write streaming" (the caching of dirty data in dirty but !uptodate folios) is perform…

EPSS: 0.001 (1.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.

Affected products

Linux — versions c38f4e96e605f17990e871214e6ea1496bc4e65f, 6.8, 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-2026-64158?: CVE-2026-64158 is a high-severity vulnerability in Linux. CVSS score: 7.3/10. Published 2026-07-19.
How severe is CVE-2026-64158?: High severity. CVSS v3 base score is 7.3 out of 10.