CVE-2025-38711

In the Linux kernel, the following vulnerability has been resolved: smb/server: avoid deadlock when linking with ReplaceIfExists If smb2_create_link() is called with ReplaceIfExists set and the name does exist then a deadlock will happen. ksmbd_vfs_kern_path_locked() will return with success and the parent directory will be locked. ksmbd_vfs_remove_file() will then remove the file. ksmbd_vfs_link() will then be called while the parent is still locked. It will try to lock the same parent and will deadlock. This patch moves the ksmbd_vfs_kern_path_unlock() call to *before* ksmbd_vfs_link() and then simplifies the code, removing the file_present flag variable.

CVSS 3.1

5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.1% chance of exploitation in the next 30 days; higher than 2% of CVEs (scores of 2026-10-25)

CWE

CWE-667

Published

2025-09-04

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

Affected

• debian:debian_linux
• linux:linux_kernel

References

• https://git.kernel.org/stable/c/1e858a7a51c7b8b009d8f246de7ceb7743b44a71
• https://git.kernel.org/stable/c/814cfdb6358d9b84fcbec9918c8f938cc096a43a
• https://git.kernel.org/stable/c/9d5012ffe14120f978ee34aef4df3d6cb026b7c4
• https://git.kernel.org/stable/c/a726fef6d7d4cfc365d3434e3916dbfe78991a33
• https://git.kernel.org/stable/c/a7dddd62578c2eb6cb28b8835556a121b5157323

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