CVE-2026-53023
fs/ntfs3: terminate the cached volume label after UTF-8 conversion
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.
INFO
Published Date :
June 24, 2026, 5:17 p.m.
Last Modified :
July 15, 2026, 1:56 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Terminate the cached volume label explicitly after conversion.
- Clamp the full buffer case to the last byte.
- Apply the patch to the Linux kernel source code.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-53023.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-53023 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-53023
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-53023 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-53023 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 15, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.141 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.91 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.33 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.0.10 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.175 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.15 up to (excluding) 5.15.209 Added Reference Type kernel.org: https://git.kernel.org/stable/c/0b11fcbe80a59acdf58337d80ebb5f72201d73d6 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/32b0686369e0afbb3549a0d93e2d8517da84cd30 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/54d564b762389679e2f8fb9eeb20af7e82371e1c Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/5cd0707b81cb4589f00aec5c4c1288bd0980d2a4 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/6136bbb054f7ab9f51ae99915541633b18bcef90 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a6cd43fe9b083fa23fe1595666d5738856cb261a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/bc7a0c34c4ca259cfddf3bc18fc5b3c6411d26ed Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 24, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '82cae269cfa953032fbb8980a7d554d60fb00b17', 'lessThan': '32b0686369e0afbb3549a0d93e2d8517da84cd30', 'versionType': 'git'}, {'status': 'affected', 'version': '82cae269cfa953032fbb8980a7d554d60fb00b17', 'lessThan': 'bc7a0c34c4ca259cfddf3bc18fc5b3c6411d26ed', 'versionType': 'git'}, {'status': 'affected', 'version': '82cae269cfa953032fbb8980a7d554d60fb00b17', 'lessThan': '0b11fcbe80a59acdf58337d80ebb5f72201d73d6', 'versionType': 'git'}, {'status': 'affected', 'version': '82cae269cfa953032fbb8980a7d554d60fb00b17', 'lessThan': '54d564b762389679e2f8fb9eeb20af7e82371e1c', 'versionType': 'git'}, {'status': 'affected', 'version': '82cae269cfa953032fbb8980a7d554d60fb00b17', 'lessThan': '6136bbb054f7ab9f51ae99915541633b18bcef90', 'versionType': 'git'}, {'status': 'affected', 'version': '82cae269cfa953032fbb8980a7d554d60fb00b17', 'lessThan': '5cd0707b81cb4589f00aec5c4c1288bd0980d2a4', 'versionType': 'git'}, {'status': 'affected', 'version': '82cae269cfa953032fbb8980a7d554d60fb00b17', 'lessThan': 'a6cd43fe9b083fa23fe1595666d5738856cb261a', 'versionType': 'git'}], 'programFiles': ['fs/ntfs3/super.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.15'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.15', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.15.209', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.175', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.141', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.91', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.33', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.10', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/ntfs3/super.c'], 'defaultStatus': 'affected'}] Added 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. Added Reference https://git.kernel.org/stable/c/0b11fcbe80a59acdf58337d80ebb5f72201d73d6 Added Reference https://git.kernel.org/stable/c/32b0686369e0afbb3549a0d93e2d8517da84cd30 Added Reference https://git.kernel.org/stable/c/54d564b762389679e2f8fb9eeb20af7e82371e1c Added Reference https://git.kernel.org/stable/c/5cd0707b81cb4589f00aec5c4c1288bd0980d2a4 Added Reference https://git.kernel.org/stable/c/6136bbb054f7ab9f51ae99915541633b18bcef90 Added Reference https://git.kernel.org/stable/c/a6cd43fe9b083fa23fe1595666d5738856cb261a Added Reference https://git.kernel.org/stable/c/bc7a0c34c4ca259cfddf3bc18fc5b3c6411d26ed