THREATOPS

THREAT OPS › Threat News › [NVD] CVE-2026-53393 (MEDIUM 5.5) — In the Linux kernel, the following vulnerability has been resolved: nfsd: reset write verifier on deferred writeback errors nfsd_vfs_write() and nfsd_commit() both call filemap_check_wb_err() to detect deferred writeback errors, but neither rotates the server's write verifier (

[NVD] CVE-2026-53393 (MEDIUM 5.5) — In the Linux kernel, the following vulnerability has been resolved: nfsd: reset write verifier on deferred writeback errors nfsd_vfs_write() and nfsd_commit() both call filemap_check_wb_err() to detect deferred writeback errors, but neither rotates the server's write verifier (

mednvdPublished 2026-07-19

CVE-2026-53393 CVSS: 5.5 MEDIUM Published: 2026-07-19T12:16:50.367

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

nfsd: reset write verifier on deferred writeback errors

nfsd_vfs_write() and nfsd_commit() both call filemap_check_wb_err() to detect deferred writeback errors, but neither rotates the server's write verifier (nn->writeverf) when this check fails. Every other du

Indicators of compromise

CVE-2026-53393cve

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-53393