CVE-2024-38634 (GCVE-0-2024-38634)
Vulnerability from cvelistv5 – Published: 2024-06-21 10:18 – Updated: 2026-05-11 20:20
VLAI
EPSS
VEX
Title
serial: max3100: Lock port->lock when calling uart_handle_cts_change()
Summary
In the Linux kernel, the following vulnerability has been resolved:
serial: max3100: Lock port->lock when calling uart_handle_cts_change()
uart_handle_cts_change() has to be called with port lock taken,
Since we run it in a separate work, the lock may not be taken at
the time of running. Make sure that it's taken by explicitly doing
that. Without it we got a splat:
WARNING: CPU: 0 PID: 10 at drivers/tty/serial/serial_core.c:3491 uart_handle_cts_change+0xa6/0xb0
...
Workqueue: max3100-0 max3100_work [max3100]
RIP: 0010:uart_handle_cts_change+0xa6/0xb0
...
max3100_handlerx+0xc5/0x110 [max3100]
max3100_work+0x12a/0x340 [max3100]
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-21 13:19 UTC
Assigner
References
9 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
7831d56b0a3544cbb6f82f76c34ca95e24d5b676 , < 44b38924135d2093e2ec1812969464845dd66dc9
(git)
Affected: 7831d56b0a3544cbb6f82f76c34ca95e24d5b676 , < ea9b35372b58ac2931bfc1d5bc25e839d1221e30 (git) Affected: 7831d56b0a3544cbb6f82f76c34ca95e24d5b676 , < cc121e3722a0a2c8f716ef991e5425b180a5fb94 (git) Affected: 7831d56b0a3544cbb6f82f76c34ca95e24d5b676 , < 78dbda51bb4241b88a52d71620f06231a341f9ba (git) Affected: 7831d56b0a3544cbb6f82f76c34ca95e24d5b676 , < 8296bb9e5925b6634259c5d4daee88f0cc0884ec (git) Affected: 7831d56b0a3544cbb6f82f76c34ca95e24d5b676 , < 93df2fba6c7dfa9a2f08546ea9a5ca4728758458 (git) Affected: 7831d56b0a3544cbb6f82f76c34ca95e24d5b676 , < 865b30c8661924ee9145f442bf32cea549faa869 (git) Affected: 7831d56b0a3544cbb6f82f76c34ca95e24d5b676 , < 77ab53371a2066fdf9b895246505f5ef5a4b5d47 (git) |
guessed | |
| Linux | Linux |
Affected:
2.6.30
Unaffected: 0 , < 2.6.30 (semver) Unaffected: 4.19.316 , ≤ 4.19.* (semver) Unaffected: 5.4.278 , ≤ 5.4.* (semver) Unaffected: 5.10.219 , ≤ 5.10.* (semver) Unaffected: 5.15.161 , ≤ 5.15.* (semver) Unaffected: 6.1.93 , ≤ 6.1.* (semver) Unaffected: 6.6.33 , ≤ 6.6.* (semver) Unaffected: 6.9.4 , ≤ 6.9.* (semver) Unaffected: 6.10 , ≤ * (original_commit_for_fix) |
guessed |
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nserial: max3100: Lock port-\u003elock when calling uart_handle_cts_change()\n\nuart_handle_cts_change() has to be called with port lock taken,\nSince we run it in a separate work, the lock may not be taken at\nthe time of running. Make sure that it\u0027s taken by explicitly doing\nthat. Without it we got a splat:\n\n WARNING: CPU: 0 PID: 10 at drivers/tty/serial/serial_core.c:3491 uart_handle_cts_change+0xa6/0xb0\n ...\n Workqueue: max3100-0 max3100_work [max3100]\n RIP: 0010:uart_handle_cts_change+0xa6/0xb0\n ...\n max3100_handlerx+0xc5/0x110 [max3100]\n max3100_work+0x12a/0x340 [max3100]"
}
],
"providerMetadata": {
"dateUpdated": "2025-05-04T09:15:46.722Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/44b38924135d2093e2ec1812969464845dd66dc9"
},
{
"url": "https://git.kernel.org/stable/c/ea9b35372b58ac2931bfc1d5bc25e839d1221e30"
},
{
"url": "https://git.kernel.org/stable/c/cc121e3722a0a2c8f716ef991e5425b180a5fb94"
},
{
"url": "https://git.kernel.org/stable/c/78dbda51bb4241b88a52d71620f06231a341f9ba"
},
{
"url": "https://git.kernel.org/stable/c/8296bb9e5925b6634259c5d4daee88f0cc0884ec"
},
{
"url": "https://git.kernel.org/stable/c/93df2fba6c7dfa9a2f08546ea9a5ca4728758458"
},
{
"url": "https://git.kernel.org/stable/c/865b30c8661924ee9145f442bf32cea549faa869"
},
{
"url": "https://git.kernel.org/stable/c/77ab53371a2066fdf9b895246505f5ef5a4b5d47"
}
],
"title": "serial: max3100: Lock port-\u003elock when calling uart_handle_cts_change()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2024-38634",
"datePublished": "2024-06-21T10:18:23.573Z",
"dateReserved": "2024-06-18T19:36:34.947Z",
"dateUpdated": "2025-11-04T17:21:53.204Z",
"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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