What is CVE-2026-64053?

CVE-2026-64053 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2026-07-19.

How severe is CVE-2026-64053?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Linux

CVE-2026-64053

In the Linux kernel, the following vulnerability has been resolved: block: don't overwrite bip_vcnt in bio_integrity_copy_user() bio_integrity_add_page() already sets bip_vcnt to 1 for the bounce segment. Overwriting it with nr_vecs brea…

EPSS: 0.002 (6.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions 3991657ae7074c3c497bf095093178bed37ea1b4, 6.11, 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-2026-64053?: CVE-2026-64053 is a high-severity vulnerability in Linux. CVSS score: 7.8/10. Published 2026-07-19.
How severe is CVE-2026-64053?: High severity. CVSS v3 base score is 7.8 out of 10.