In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix potential deadlock when releasing mids
All release_mid() callers seem to hold a reference of @mid so there is
no need to call kref_put(&mid->refcount, __release_mid) under
@server->mid_lock spinlock. If they don't, then an use-after-free bug
would have occurred anyways.
By getting rid of such spinlock also fixes a potential deadlock as
shown below
CPU 0 CPU 1
------------------------------------------------------------------
cifs_demultiplex_thread() cifs_debug_data_proc_show()
release_mid()
spin_lock(&server->mid_lock);
spin_lock(&cifs_tcp_ses_lock)
spin_lock(&server->mid_lock)
__release_mid()
smb2_find_smb_tcon()
spin_lock(&cifs_tcp_ses_lock) *deadlock*
References
Configurations
Configuration 1 (hide)
|
History
06 Jan 2025, 20:27
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| References | () https://git.kernel.org/stable/c/9eb44db68c5b7f5aa22b8fc7de74a3e2e08d1f29 - Patch | |
| References | () https://git.kernel.org/stable/c/b9bb9607b1fc12fca51f5632da25b36975f599bf - Patch | |
| References | () https://git.kernel.org/stable/c/c1a5962f1462b64fe7b69f20a4b6af8067bc2d26 - Patch | |
| References | () https://git.kernel.org/stable/c/e6322fd177c6885a21dd4609dc5e5c973d1a2eb7 - Patch | |
| First Time |
Linux linux Kernel
Linux |
|
| CWE | CWE-667 CWE-416 |
Information
Published : 2024-05-21 16:15
Updated : 2025-01-06 20:27
NVD link : CVE-2023-52757
Mitre link : CVE-2023-52757
CVE.ORG link : CVE-2023-52757
JSON object : View
Products Affected
linux
- linux_kernel