CVE-2023-53006

cifs: Fix oops due to uncleared server->smbd_conn in reconnect

State: Published
Severity: 9.8 Critical
Published: Mar 27, 2025
Updated: Oct 15, 2026
Reserved: Mar 27, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

cifs: Fix oops due to uncleared server->smbd_conn in reconnect

In smbd_destroy(), clear the server->smbd_conn pointer after freeing the smbd_connection struct that it points to so that reconnection doesn't get confused.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	8ef130f9ec27973f7b49e20c5a3b9134ca33026c to before a9640c0b268405f2540e8203a545e930ea88bb7dAffected 8ef130f9ec27973f7b49e20c5a3b9134ca33026c to before 91be54849d5392050f5b847b42bd5e6221551ac8Affected 8ef130f9ec27973f7b49e20c5a3b9134ca33026c to before e037baee16e0b9ace7e730888fcae9cec11daff2Affected 8ef130f9ec27973f7b49e20c5a3b9134ca33026c to before 4b83bc6f87eedab4599b0123e572a422689444beAffected 8ef130f9ec27973f7b49e20c5a3b9134ca33026c to before 5109607a4ece7cd8536172bf7549eb4dce1f3576Affected 8ef130f9ec27973f7b49e20c5a3b9134ca33026c to before b7ab9161cf5ddc42a288edf9d1a61f3bdffe17c7Affected
LinuxLinux	4.16Affected before 4.16Not affected 4.19.272 through 4.19.Not affected 5.4.231 through 5.4.Not affected 5.10.166 through 5.10.Not affected 5.15.91 through 5.15.Not affected 6.1.9 through 6.1.*Not affected 6.2 and laterNot affected

Product

Versions

LinuxLinux

8ef130f9ec27973f7b49e20c5a3b9134ca33026c to before a9640c0b268405f2540e8203a545e930ea88bb7dAffected
8ef130f9ec27973f7b49e20c5a3b9134ca33026c to before 91be54849d5392050f5b847b42bd5e6221551ac8Affected
8ef130f9ec27973f7b49e20c5a3b9134ca33026c to before e037baee16e0b9ace7e730888fcae9cec11daff2Affected
8ef130f9ec27973f7b49e20c5a3b9134ca33026c to before 4b83bc6f87eedab4599b0123e572a422689444beAffected
8ef130f9ec27973f7b49e20c5a3b9134ca33026c to before 5109607a4ece7cd8536172bf7549eb4dce1f3576Affected
8ef130f9ec27973f7b49e20c5a3b9134ca33026c to before b7ab9161cf5ddc42a288edf9d1a61f3bdffe17c7Affected

LinuxLinux

4.16Affected
before 4.16Not affected
4.19.272 through 4.19.*Not affected
5.4.231 through 5.4.*Not affected
5.10.166 through 5.10.*Not affected
5.15.91 through 5.15.*Not affected
6.1.9 through 6.1.*Not affected
6.2 and laterNot affected

References

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