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CVE-2025-38711

nvd nist
Published: Sep 4, 2025Modified: Oct 19, 2026

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5.5
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Exploitability: 1.8 / Impact: 3.6
Source: NVD

Description

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.

Affected (7)

1 product
Linux Kernel
1 product
Debian Linux
Configuration A
6 vulnerable
Vulnerable SoftwareAffected Versions
Linux
5.15 ≤ version < 5.15.190
5.16 ≤ version < 6.1.149
6.13 ≤ version < 6.15.11
6.16 ≤ version < 6.16.2
6.2 ≤ version < 6.6.103
6.7 ≤ version < 6.12.43
Configuration B
1 vulnerable
Vulnerable SoftwareAffected Versions
Version 11.0

References (9)

Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Patch
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e

Timeline

No history available yet.