CVE-2026-53010 | In the Linux kernel, the following vulnerability has been re… | CVSS 9.8 CRITICAL

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.

Metadata

CVE ID: CVE-2026-53010
State: PUBLISHED
Assigner: Linux
Reserved: 2026-06-09 07:44 UTC
Published: 2026-06-24 16:29 UTC
Last updated: 2026-06-28 06:38 UTC
Vendor / Product: Linux / Linux
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products (2)

Vendor	Product	Platform	Versions
Linux	Linux	—	c8efcc786146a951091588e5fa7e3c754850cb3c < ce2e164c1c51c3f7813b80f8c926836e896bcbb3, c8efcc786146a951091588e5fa7e3c754850cb3c < 97a0cd55283b4e63fd92804da91c8d9896adcad9, c8efcc786146a951091588e5fa7e3c754850cb3c < 1baff47b81f94f9231c91236aa511420d0e266b9, 8df4bcdb0a4232192b2445256c39b787d58ef14d …
Linux	Linux	—	6.9, 0 < 6.9, 6.18.33 ≤ 6.18., 7.0.10 ≤ 7.0. …

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (3)