Bug 2502223 (CVE-2026-63793) - CVE-2026-63793 kernel: ntfs: serialize volume label accesses
Summary: CVE-2026-63793 kernel: ntfs: serialize volume label accesses
Keywords:
Status: NEW
Alias: CVE-2026-63793
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-19 13:02 UTC by OSIDB Bzimport
Modified: 2026-07-20 14:32 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-07-19 13:02:40 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ntfs: serialize volume label accesses

Protect vol->volume_label with a mutex and snaphost the label before
copy_to_user. This prevent a use-after-free when FS_IOC_SETFSLABEL
replaces the vol->volume_label and FS_IOC_GETTSLABEL reads it
concurrently.
Comment 1 Keith Grant 2026-07-20 14:29:55 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026071959-CVE-2026-63793-2d83@gregkh/T
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