CVE-2023-52757

Advisory lineage Upstream: 0 Downstream: 35
Analyzed
Published: 21 May 2024, 15:30
Last modified:23 May 2026, 15:26

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.01% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

21 May 2024, 15:30
Published
Vulnerability first disclosed
23 May 2026, 15:26
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.01%• Percentile: 2%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

  • CWE-667•Improper Locking

    The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.

Affected Systems

  • debian•debian_linux

    11.0

  • linux•linux

    ≥ 7b71843fa7028475b052107664cbe120156a2cfc, < 99f476e27aad5964ab13777d84fda67d1356dec1 | ≥ 7b71843fa7028475b052107664cbe120156a2cfc, < ce49569079a9d4cad26c0f1d4653382fd9a5ca7a | ≥ 7b71843fa7028475b052107664cbe120156a2cfc, < 9eb44db68c5b7f5aa22b8fc7de74a3e2e08d1f29 | ≥ 7b71843fa7028475b052107664cbe120156a2cfc, < b9bb9607b1fc12fca51f5632da25b36975f599bf | ≥ 7b71843fa7028475b052107664cbe120156a2cfc, < c1a5962f1462b64fe7b69f20a4b6af8067bc2d26 | ≥ 7b71843fa7028475b052107664cbe120156a2cfc, < e6322fd177c6885a21dd4609dc5e5c973d1a2eb7 | 9871dea42034ee6e73bb2b97ba0284d3d462b230 | ≥ 5.4.6, < 5.5 | 5.5

  • linux•linux_kernel

    < 5.10.237 | ≥ 5.11, < 5.15.181 | ≥ 5.16, < 6.1.64 | ≥ 6.2, < 6.5.13 | ≥ 6.6, < 6.6.3

References (7)