# CVE-2026-53010

## Summary

- **CVE ID:** CVE-2026-53010
- **Severity:** CRITICAL
- **CVSS Score:** 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
- **CWE:** N/A
- **Published:** Jun 24, 2026
- **Last Modified:** Sep 14, 2026

## 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.

## Affected Products

- Linux — Linux (c8efcc786146a951091588e5fa7e3c754850cb3c)
- Linux — Linux (8df4bcdb0a4232192b2445256c39b787d58ef14d)
- Linux — Linux (6.6.32)
- Linux — Linux (6.9)
- Linux — Linux (0)
- Linux — Linux (6.18.33)
- Linux — Linux (7.0.10)
- Linux — Linux (7.1)
- Linux — Linux (6.6.157)
- Linux — Linux (6.12.110)

## References

- [CNA](https://git.kernel.org/stable/c/ce2e164c1c51c3f7813b80f8c926836e896bcbb3)
- [CNA](https://git.kernel.org/stable/c/97a0cd55283b4e63fd92804da91c8d9896adcad9)
- [CNA](https://git.kernel.org/stable/c/1baff47b81f94f9231c91236aa511420d0e266b9)
- [CNA](https://git.kernel.org/stable/c/f0ff7f12398e85b3a11745ff7feab6246f3d75c2)
- [CNA](https://git.kernel.org/stable/c/4db3dcac84c2f14a45ae201efb38de1fb1bfc009)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.44%
- **EPSS Percentile:** 37.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._