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THREAT OPS › Threat News › [NVD] CVE-2026-63811 — In the Linux kernel, the following vulnerability has been resolved: f2fs: read COW data with the original inode during atomic write When updating an atomic-write file, f2fs_write_begin() may read the previously written data back from the COW inode: prepare_atomic_write_begin()

[NVD] CVE-2026-63811 — In the Linux kernel, the following vulnerability has been resolved: f2fs: read COW data with the original inode during atomic write When updating an atomic-write file, f2fs_write_begin() may read the previously written data back from the COW inode: prepare_atomic_write_begin()

mednvdPublished 2026-07-19

CVE-2026-63811 CVSS: None Published: 2026-07-19T12:16:54.023

In the Linux kernel, the following vulnerability has been resolved:

f2fs: read COW data with the original inode during atomic write

When updating an atomic-write file, f2fs_write_begin() may read the previously written data back from the COW inode: prepare_atomic_write_begin() locates the block in the COW inode and sets use_cow, and

Indicators of compromise

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-63811