CVE-2023-53990

SMB3: Add missing locks to protect deferred close file list

EPSS 0.2%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

24 Dec 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

In the Linux kernel, the following vulnerability has been resolved: SMB3: Add missing locks to protect deferred close file list cifs_del_deferred_close function has a critical section which modifies the deferred close file list. We must acquire deferred_lock before calling cifs_del_deferred_close function.

Affected products

Linux · Linux

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References

https://git.kernel.org/stable/c/0f87e18203bd30f71eb1a65259e28e291b6cc43a https://git.kernel.org/stable/c/32a046ccaeea6c19965c04a4c521e703f6607924 https://git.kernel.org/stable/c/3aa9d065b0685b4e6052f3f2a2462966fdc44fd2 https://git.kernel.org/stable/c/ab9ddc87a9055c4bebd6524d5d761d605d52e557 https://git.kernel.org/stable/c/cb36365dac25d546ca4af0eb22acb43c9b4ddfdf