CVE-2023-52757 (GCVE-0-2023-52757)
Vulnerability from cvelistv5 – Published: 2024-05-21 15:30 – Updated: 2026-05-23 15:26
VLAI
EPSS
VEX
Title
smb: client: fix potential deadlock when releasing mids
Summary
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*
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 15:37 UTC
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
7b71843fa7028475b052107664cbe120156a2cfc , < 99f476e27aad5964ab13777d84fda67d1356dec1
(git)
Affected: 7b71843fa7028475b052107664cbe120156a2cfc , < ce49569079a9d4cad26c0f1d4653382fd9a5ca7a (git) Affected: 7b71843fa7028475b052107664cbe120156a2cfc , < 9eb44db68c5b7f5aa22b8fc7de74a3e2e08d1f29 (git) Affected: 7b71843fa7028475b052107664cbe120156a2cfc , < b9bb9607b1fc12fca51f5632da25b36975f599bf (git) Affected: 7b71843fa7028475b052107664cbe120156a2cfc , < c1a5962f1462b64fe7b69f20a4b6af8067bc2d26 (git) Affected: 7b71843fa7028475b052107664cbe120156a2cfc , < e6322fd177c6885a21dd4609dc5e5c973d1a2eb7 (git) Affected: 9871dea42034ee6e73bb2b97ba0284d3d462b230 (git) Affected: 5.4.6 , < 5.5 (semver) |
guessed | |
| Linux | Linux |
Affected:
5.5
Unaffected: 0 , < 5.5 (semver) Unaffected: 5.10.237 , ≤ 5.10.* (semver) Unaffected: 5.15.181 , ≤ 5.15.* (semver) Unaffected: 6.1.64 , ≤ 6.1.* (semver) Unaffected: 6.5.13 , ≤ 6.5.* (semver) Unaffected: 6.6.3 , ≤ 6.6.* (semver) Unaffected: 6.7 , ≤ * (original_commit_for_fix) |
guessed |
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"tags": [
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],
"url": "https://git.kernel.org/stable/c/9eb44db68c5b7f5aa22b8fc7de74a3e2e08d1f29"
},
{
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"tags": [
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{
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"tags": [
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],
"url": "https://git.kernel.org/stable/c/c1a5962f1462b64fe7b69f20a4b6af8067bc2d26"
},
{
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"tags": [
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],
"url": "https://git.kernel.org/stable/c/e6322fd177c6885a21dd4609dc5e5c973d1a2eb7"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-416"
},
{
"lang": "en",
"value": "CWE-667"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
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"current_release_date": "2026-06-28T06:48:24+00:00",
"cve": "CVE-2023-52757",
"id": "CVE-2023-52757",
"initial_release_date": "2023-01-01T00:00:00+00:00",
"product_status:fixed": "280",
"product_status:known_affected": "22",
"product_status:known_not_affected": "98",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: smb: client: fix potential deadlock when releasing mids",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-52757.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2025-11-03T19:28:49.329Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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{
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}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2023-52757",
"options": [
{
"Exploitation": "none"
},
{
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},
{
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}
],
"role": "CISA Coordinator",
"timestamp": "2024-09-10T15:37:12.677779Z",
"version": "2.0.3"
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"providerMetadata": {
"dateUpdated": "2024-09-11T12:42:19.703Z",
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},
"title": "CISA ADP Vulnrichment"
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],
"cna": {
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"product": "Linux",
"programFiles": [
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"fs/smb/client/transport.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
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},
{
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},
{
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},
{
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{
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],
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix potential deadlock when releasing mids\n\nAll release_mid() callers seem to hold a reference of @mid so there is\nno need to call kref_put(\u0026mid-\u003erefcount, __release_mid) under\n@server-\u003emid_lock spinlock. If they don\u0027t, then an use-after-free bug\nwould have occurred anyways.\n\nBy getting rid of such spinlock also fixes a potential deadlock as\nshown below\n\nCPU 0 CPU 1\n------------------------------------------------------------------\ncifs_demultiplex_thread() cifs_debug_data_proc_show()\n release_mid()\n spin_lock(\u0026server-\u003emid_lock);\n spin_lock(\u0026cifs_tcp_ses_lock)\n\t\t\t\t spin_lock(\u0026server-\u003emid_lock)\n __release_mid()\n smb2_find_smb_tcon()\n spin_lock(\u0026cifs_tcp_ses_lock) *deadlock*"
}
],
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{
"url": "https://git.kernel.org/stable/c/e6322fd177c6885a21dd4609dc5e5c973d1a2eb7"
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],
"title": "smb: client: fix potential deadlock when releasing mids",
"x_generator": {
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}
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"cveId": "CVE-2023-52757",
"datePublished": "2024-05-21T15:30:44.248Z",
"dateReserved": "2024-05-21T15:19:24.237Z",
"dateUpdated": "2026-05-11T19:32:35.635Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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