CVE-2023-53006

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

MEDIUM

5.5

CVSS Score

Published: March 27, 2025 at 04:43 PM UTC

Updated: October 15, 2026 at 10:17 PM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.6%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

4.16 ≤ v < 4.19.2724.20 ≤ v < 5.4.2315.11 ≤ v < 5.15.915.16 ≤ v < 6.1.95.5 ≤ v < 5.10.1666.2 6.2 rc1 6.2 rc2 6.2 rc3 6.2 rc4 6.2 rc58ef130f9ec27973f7b49e20c5a3b9134ca33026c

Vendor states this is fixed in 4b83bc6f87eedab4599b0123e572a422689444be (fixed)

Vendor states this is fixed in 5109607a4ece7cd8536172bf7549eb4dce1f3576 (fixed)

Vendor states this is fixed in 91be54849d5392050f5b847b42bd5e6221551ac8 (fixed)

Vendor states this is fixed in a9640c0b268405f2540e8203a545e930ea88bb7d (fixed)

Vendor states this is fixed in b7ab9161cf5ddc42a288edf9d1a61f3bdffe17c7 (fixed)

Vendor states this is fixed in e037baee16e0b9ace7e730888fcae9cec11daff2 (fixed)

Vendor states this is fixed in 4.16 (unaffected)

Vendor states this is fixed in 4.19.272 (unaffected)

Vendor states this is fixed in 5.10.166 (unaffected)

Vendor states this is fixed in 5.15.91 (unaffected)

Vendor states this is fixed in 5.4.231 (unaffected)

Vendor states this is fixed in 6.1.9 (unaffected)