CVE-2026-45972
Published May 27, 2026
Modified May 27, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF and double free in smb2_open_file() Zero out @err_iov and @err_buftype before retrying SMB2_open() to prevent an UAF bug if @data != NULL, otherwise a double free.
References
Other References
https://git.kernel.org/stable/c/4d339b219004869e96c4ce56b8891f83a38da4c0
https://git.kernel.org/stable/c/639deb962986ef2f5e2a6d5a600c66f922471e81
https://git.kernel.org/stable/c/7425453ea16dbc3bbb0f6cac4d60b537e5e4d151
https://git.kernel.org/stable/c/96e53bb3ee2f354cf6b4ab07bcc56e500f8b3f74
https://git.kernel.org/stable/c/e66dcf7bb9c4df5582c82bc3582725abcbfbea73
https://git.kernel.org/stable/c/ebbbc4bfad4cb355d17c671223d0814ee3ef4eda
Frequently Asked Questions
What is CVE-2026-45972? +
In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix potential UAF and double free in smb2_open_file()
Zero out @err_iov and @err_buftype before retrying SMB2_open() to
prevent an UAF bug if @data != NULL, otherwise a double free.
How do I check if I'm vulnerable to CVE-2026-45972? +
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.