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CVE PROGRAM SOURCE RECORD9.8 Critical

CVE-2026-89612

ntfs: reject invalid MFT LCNs from boot sector

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: ntfs: reject invalid MFT LCNs from boot sector The NTFS boot sector stores the MFT and MFTMirr locations as unsigned 64-bit LCNs, but parse_ntfs_boot_sector() decoded them into an s64. A crafted high-bit value could therefore become negative and pass the existing upper-bound check. The invalid value then propagated into the MFT zone allocator and could result in an out-of-bounds access to lcn_empty_bits_per_page.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 11ccc9107dc460de28af90fac1f42404d9802735 to < 8f8420b68a6f05ca2b03779d8208814ec539b9e5affected
  • 11ccc9107dc460de28af90fac1f42404d9802735 to < cc9d09fef78410bcd37ac05168cbd5f6dd75d3d2affected

Linux Linux

Default version status: affected

  • 7.1affected
  • 0 to < 7.1unaffected
  • 7.2.4 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References