CVE-2025-68728
Published Dec 24, 2025
Modified Apr 15, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: ntfs3: fix uninit memory after failed mi_read in mi_format_new Fix a KMSAN un-init bug found by syzkaller. ntfs_get_bh() expects a buffer from sb_getblk(), that buffer may not be uptodate. We do not bring the buffer uptodate before setting it as uptodate. If the buffer were to not be uptodate, it could mean adding a buffer with un-init data to the mi record. Attempting to load that record will trigger KMSAN. Avoid this by setting the buffer as uptodate, if it’s not already, by overwriting it.
Is your site exposed to CVE-2025-68728?
Run a free security scan — no signup, results in seconds.
References
Other References
https://git.kernel.org/stable/c/46f2a881e5a7311d41551edb3915e4d4e8802341
https://git.kernel.org/stable/c/73e6b9dacf72a1e7a4265eacca46f8f33e0997d6
https://git.kernel.org/stable/c/7ce8f2028dfccb2161b905cf8ab85cdd9e93909c
https://git.kernel.org/stable/c/81ffe9a265df3e41534726b852ab08792e3d374d
https://git.kernel.org/stable/c/8bf729b96303bb862d7c6dc05edcf51274ae04cf
https://git.kernel.org/stable/c/afb144bc8e920db43a23e996eb0a6f9bdea84341
https://git.kernel.org/stable/c/c70b3abfd530c7f574bc25a5f84707e6fdf0def8
Frequently Asked Questions
What is CVE-2025-68728? +
In the Linux kernel, the following vulnerability has been resolved:
ntfs3: fix uninit memory after failed mi_read in mi_format_new
Fix a KMSAN un-init bug found by syzkaller.
ntfs_get_bh() expects a buffer from sb_getblk(), that buffer may not be
uptodate. We do not bring the buffer uptodate before setting it as
uptodate. If the buffer were to not be uptodate, it could mean adding a
buffer with un-init data to the mi record. Attempting to load that record
will trigger KMSAN.
Avoid this by setting the buffer as uptodate, if it’s not already, by
overwriting it.
How do I check if I'm vulnerable to CVE-2025-68728? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.