CVE-2026-53023 Details
Description
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: terminate the cached volume label after UTF-8 conversion ntfs_fill_super() loads the on-disk volume label with utf16s_to_utf8s() and stores the result in sbi->volume.label. The converted label is later exposed through ntfs3_label_show() using %s, but utf16s_to_utf8s() only returns the number of bytes written and does not add a trailing NUL. If the converted label fills the entire fixed buffer, ntfs3_label_show() can read past the end of sbi->volume.label while looking for a terminator. Terminate the cached label explicitly after a successful conversion and clamp the exact-full case to the last byte of the buffer.
A buffer overflow vulnerability has been identified in the Linux kernel's NTFS3 file system handling. The issue arises in the 'ntfs_fill_super' function, where the on-disk volume label is loaded and converted from UTF-16 to UTF-8. The converted label is stored in a fixed-size buffer, but the conversion function does not append a null terminator. If the label fills the entire buffer, it can lead to 'ntfs3_label_show' reading past the intended limit while searching for a terminator. This vulnerability affects several versions of the Linux kernel.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed. Instructions for upgrading the kernel can be found in the official Linux kernel documentation.
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/0b11fcbe80a59acdf58337d80ebb5f72201d73d6 | kernel.org | Patch |
| https://git.kernel.org/stable/c/32b0686369e0afbb3549a0d93e2d8517da84cd30 | kernel.org | Patch |
| https://git.kernel.org/stable/c/54d564b762389679e2f8fb9eeb20af7e82371e1c | kernel.org | Patch |
| https://git.kernel.org/stable/c/5cd0707b81cb4589f00aec5c4c1288bd0980d2a4 | kernel.org | Patch |
| https://git.kernel.org/stable/c/6136bbb054f7ab9f51ae99915541633b18bcef90 | kernel.org | Patch |
| https://git.kernel.org/stable/c/a6cd43fe9b083fa23fe1595666d5738856cb261a | kernel.org | Patch |
| https://git.kernel.org/stable/c/bc7a0c34c4ca259cfddf3bc18fc5b3c6411d26ed | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.15, < 5.15.209 >= 5.16, < 6.1.175 >= 6.2, < 6.6.141 >= 6.7, < 6.12.91 >= 6.13, < 6.18.33 >= 6.19, < 7.0.10 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 15, 2026 | Initial Analysis | [email protected] |
| Jun 24, 2026 | New CVE Received | kernel.org |