Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb2_open during durable reconnect In smb2_open, the call to ksmbd_put_durable_fd(fp) drops the reference to the durable file descriptor early during the durable reconnect process. If an error occurs subsequently (eg, ksmbd_iov_pin_rsp fails) or a scavenger accesses the file, it leads to a use-after-free when accessing fp properties (eg fp->create_time). Move the single put to the end of the function below err_out2 so fp stays valid until smb2_open returns.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.6.32, < 6.7 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/1baff47b81f94f9231c91236aa511420d0e266b9Patch
- https://git.kernel.org/stable/c/97a0cd55283b4e63fd92804da91c8d9896adcad9Patch
- https://git.kernel.org/stable/c/ce2e164c1c51c3f7813b80f8c926836e896bcbb3Patch
FAQ
What is CVE-2026-53010?
CVE-2026-53010 is a vulnerability with a CVSS score of 9.8 (CRITICAL). In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb2_open during durable reconnect In smb2_open, the call to ksmbd_put_durable_fd(fp) drops the refer...
How severe is CVE-2026-53010?
CVE-2026-53010 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-53010?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.