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Vulnerability record · CVE-2026-63793 · published 19 July 2026

CVE-2026-63793: Linux kernel use after free vulnerability

Linux · Linux Kernel

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.

7.8 CVSS 3.1 High EPSS 0.17% · top 94.9% CWE-416 · Use after free
7.8CVSS 3.1 base score
0.17%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Aug 2026Last modified by NVD

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/acd744019460bad22e43d4569a502f9c88d331ae Patch
https://git.kernel.org/stable/c/e9e50ce4f13dc721014af622613409455c734942 Patch

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Source: NIST National Vulnerability Database (record CVE-2026-63793), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.