Bug 2532418 (CVE-2026-89610) - CVE-2026-89610 kernel: ntfs: verify run length exceeding volume boundary
Summary: CVE-2026-89610 kernel: ntfs: verify run length exceeding volume boundary
Keywords:
Status: NEW
Alias: CVE-2026-89610
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-11 22:54 UTC by OSIDB Bzimport
Modified: 2026-09-15 09:33 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-09-11 22:54:41 UTC
In the Linux kernel, the following vulnerability has been resolved:

ntfs: verify run length exceeding volume boundary

The mapping pairs decoder validates that the starting LCN is within the
volume but does not check if the run extends beyond the volume boundary.

A malformed NTFS image with a crafted mapping pairs array could cause
the kernel to access memory beyond the volume boundary, potentially leading
to memory corruption and privilege escalation.

Add validation to ensure lcn + length stays within nr_clusters.


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