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THREAT OPS › Threat News › [NVD] CVE-2026-64326 (MEDIUM 5.5) — In the Linux kernel, the following vulnerability has been resolved: block: skip sync_blockdev() on surprise removal in bdev_mark_dead() bdev_mark_dead()'s @surprise == true means the device is already gone. The filesystem callback fs_bdev_mark_dead() honours this and skips sync

[NVD] CVE-2026-64326 (MEDIUM 5.5) — In the Linux kernel, the following vulnerability has been resolved: block: skip sync_blockdev() on surprise removal in bdev_mark_dead() bdev_mark_dead()'s @surprise == true means the device is already gone. The filesystem callback fs_bdev_mark_dead() honours this and skips sync

lownvdPublished 2026-07-25

CVE-2026-64326 CVSS: 5.5 MEDIUM Published: 2026-07-25T10:17:14.207

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

block: skip sync_blockdev() on surprise removal in bdev_mark_dead()

bdev_mark_dead()'s @surprise == true means the device is already gone. The filesystem callback fs_bdev_mark_dead() honours this and skips sync_filesystem(), but the bare block device path (no ->

Indicators of compromise

CVE-2026-64326cve

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-64326