CVE-2023-52757
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2023-52757
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52757.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2023-52757
- Downstream
- Related
- Published
- 2024-05-21T16:15:15Z
- Modified
- 2025-08-09T19:01:27Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix potential deadlock when releasing mids
All releasemid() callers seem to hold a reference of @mid so there is no need to call krefput(&mid->refcount, _releasemid) 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
cifsdemultiplexthread() cifsdebugdataprocshow() releasemid() spinlock(&server->midlock); spinlock(&cifstcpseslock) spinlock(&server->midlock) _releasemid() smb2findsmbtcon() spinlock(&cifstcpseslock) deadlock
- References
-
- https://git.kernel.org/stable/c/9eb44db68c5b7f5aa22b8fc7de74a3e2e08d1f29
- https://git.kernel.org/stable/c/b9bb9607b1fc12fca51f5632da25b36975f599bf
- https://git.kernel.org/stable/c/c1a5962f1462b64fe7b69f20a4b6af8067bc2d26
- https://git.kernel.org/stable/c/e6322fd177c6885a21dd4609dc5e5c973d1a2eb7
- https://git.kernel.org/stable/c/99f476e27aad5964ab13777d84fda67d1356dec1
- https://git.kernel.org/stable/c/ce49569079a9d4cad26c0f1d4653382fd9a5ca7a