CVE-2026-64053

In the Linux kernel, the following vulnerability has been resolved: block: don't overwrite bipvcnt in biointegritycopyuser biointegrityaddpage already sets bipvcnt to 1 for the bounce segment. Overwriting it with nrvecs breaks bipvcnt = bipmaxvcnt on WRITE bipmaxvcnt is 1, so the gap-merge checks...

CVE-2026-64053

The CVE-2026-64053 issue lies in the Linux kernel block layer: bio_integrity_copy_user() overwrites bip_vcnt, and bio_integrity_add_page() already sets bip_vcnt to 1 for the bounce segment. Writing with nr_vecs can violate bip_vcnt