Use-after-free in Linux kernel - CVE-2026-53010
Published: June 25, 2026
Vulnerability identifier: #VU135353
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-53010
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to use-after-free in smb2_open during durable reconnect handling when processing a durable reconnect request. A remote user can trigger an error condition during durable reconnect to cause a denial of service.
The issue can occur if a subsequent error happens after the durable file descriptor reference is dropped early, or if a scavenger accesses the file before smb2_open returns.
How to mitigate CVE-2026-53010
Install security update from vendor's repository.