CVE-2026-63793 Details
Description
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.
A use-after-free vulnerability has been addressed in the Linux kernel's NTFS file system handling. The issue arose because the volume label was not properly synchronized, allowing concurrent read and write operations to interfere with each other. Specifically, when the FS_IOC_SETFSLABEL command was used to change the volume label, the FS_IOC_GETTSLABEL command could simultaneously read the old label, leading to a use-after-free condition. This vulnerability affects the Linux kernel's stable releases.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/acd744019460bad22e43d4569a502f9c88d331ae | kernel.org | Patch |
| https://git.kernel.org/stable/c/e9e50ce4f13dc721014af622613409455c734942 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-416 | Use After Free | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 7.1, < 7.1.3 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 17, 2026 | CVE Modified | kernel.org |
| Jul 30, 2026 | Initial Analysis | [email protected] |
| Jul 20, 2026 | CVE Modified | kernel.org |
| Jul 20, 2026 | CVE Modified | kernel.org |
| Jul 19, 2026 | New CVE Received | kernel.org |