Vulnerability Description
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*
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian | Debian Linux | 11.0 |
| Linux | Linux Kernel | < 5.10.237 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/99f476e27aad5964ab13777d84fda67d1356dec1Patch
- https://git.kernel.org/stable/c/9eb44db68c5b7f5aa22b8fc7de74a3e2e08d1f29Patch
- https://git.kernel.org/stable/c/b9bb9607b1fc12fca51f5632da25b36975f599bfPatch
- https://git.kernel.org/stable/c/c1a5962f1462b64fe7b69f20a4b6af8067bc2d26Patch
- https://git.kernel.org/stable/c/ce49569079a9d4cad26c0f1d4653382fd9a5ca7aPatch
- https://git.kernel.org/stable/c/e6322fd177c6885a21dd4609dc5e5c973d1a2eb7Patch
- https://git.kernel.org/stable/c/9eb44db68c5b7f5aa22b8fc7de74a3e2e08d1f29Patch
- https://git.kernel.org/stable/c/b9bb9607b1fc12fca51f5632da25b36975f599bfPatch
- https://git.kernel.org/stable/c/c1a5962f1462b64fe7b69f20a4b6af8067bc2d26Patch
- https://git.kernel.org/stable/c/e6322fd177c6885a21dd4609dc5e5c973d1a2eb7Patch
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.htmlMailing ListThird Party Advisory
FAQ
What is CVE-2023-52757?
CVE-2023-52757 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 ...
How severe is CVE-2023-52757?
CVE-2023-52757 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-52757?
Check the references section above for vendor advisories and patch information. Affected products include: Debian Debian Linux, Linux Linux Kernel.