CVE-2024-36012 (GCVE-0-2024-36012)
Vulnerability from cvelistv5 – Published: 2024-05-23 07:03 – Updated: 2026-08-05 11:31
VLAI
EPSS
VEX
Title
Bluetooth: msft: fix slab-use-after-free in msft_do_close()
Summary
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: msft: fix slab-use-after-free in msft_do_close()
Tying the msft->data lifetime to hdev by freeing it in
hci_release_dev() to fix the following case:
[use]
msft_do_close()
msft = hdev->msft_data;
if (!msft) ...(1) <- passed.
return;
mutex_lock(&msft->filter_lock); ...(4) <- used after freed.
[free]
msft_unregister()
msft = hdev->msft_data;
hdev->msft_data = NULL; ...(2)
kfree(msft); ...(3) <- msft is freed.
==================================================================
BUG: KASAN: slab-use-after-free in __mutex_lock_common
kernel/locking/mutex.c:587 [inline]
BUG: KASAN: slab-use-after-free in __mutex_lock+0x8f/0xc30
kernel/locking/mutex.c:752
Read of size 8 at addr ffff888106cbbca8 by task kworker/u5:2/309
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-10 18:54 UTC
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
bf6a4e30ffbd9e9ef8934582feb937f6532f8b68 , < e3880b531b68f98d3941d83f2f6dd11cf4fd6b76
(git)
Affected: bf6a4e30ffbd9e9ef8934582feb937f6532f8b68 , < a85a60e62355e3bf4802dead7938966824b23940 (git) Affected: bf6a4e30ffbd9e9ef8934582feb937f6532f8b68 , < 4f1de02de07748da80a8178879bc7a1df37fdf56 (git) Affected: bf6a4e30ffbd9e9ef8934582feb937f6532f8b68 , < 10f9f426ac6e752c8d87bf4346930ba347aaabac (git) |
guessed | |
| Linux | Linux |
Affected:
5.12
Unaffected: 0 , < 5.12 (semver) Unaffected: 6.1.91 , ≤ 6.1.* (semver) Unaffected: 6.6.31 , ≤ 6.6.* (semver) Unaffected: 6.8.10 , ≤ 6.8.* (semver) Unaffected: 6.9 , ≤ * (original_commit_for_fix) |
guessed |
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[gratis] msft_unregister() msft = hdev-\u0026gt;msft_data; hdev-\u0026gt;msft_data = NULL; ...(2) klibre(msft); ...(3) \u0026lt;- se libera msft. ==================================================== ================ ERROR: KASAN: slab-use-after-free en __mutex_lock_common kernel/locking/mutex.c:587 [en l\u00ednea] ERROR: KASAN: slab-use-after -free en __mutex_lock+0x8f/0xc30 kernel/locking/mutex.c:752 Lectura de tama\u00f1o 8 en addr ffff888106cbbca8 por tarea 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"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2026-08-04T22:46:31+00:00",
"cve": "CVE-2024-36012",
"id": "CVE-2024-36012",
"initial_release_date": "2024-05-23T00:00:00+00:00",
"product_status:fixed": "305",
"product_status:known_affected": "98",
"product_status:known_not_affected": "14",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: Bluetooth: msft: fix slab-use-after-free in msft_do_close()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-36012.json",
"version": "3"
},
"vulnrichment": {
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The vulnerable `msft_do_close()` path is only reachable through local device-lifecycle operations.\\nAC:L - The attacker controls both sides of the race \\u2014 it creates the HCI device, arms the close path (the 2-second `power_off` auto-off delayed work, or an injected HCI Hardware Error that queues `error_reset`), then tears the transport down to run `msft_unregister()` concurrently. The window is wide (no shared lock between the free and the use) and the attempt is infinitely retryable.\\nPR:L - An unprivileged local user reaching the Bluetooth HCI device-management interfaces can drive both the adapter power-down path and the transport teardown that frees `msft_data`; no real root in the initial namespace is required to win this race. This matches the privilege level assigned to the equivalent HCI teardown use-after-frees (CVE-2024-53208, CVE-2024-58013, CVE-2024-58241).\\nUI:N - The race is driven entirely by the attacker\u0027s own sequence of device-lifecycle and power-state operations. No victim action or interaction is needed at any point.\\nS:U - The freed object, the corrupted heap, and the resulting compromise all reside within the kernel\u0027s own security authority. There is no crossing of a VM, IOMMU, or sandbox boundary.\\nC:H - After the freed `msft_data` slab is reallocated with sprayed data, `msft_do_close()` walks `msft-\u003ehandle_map` and reads `handle_data-\u003emgmt_handle` from attacker-controlled memory and feeds it to `idr_find()`, yielding an arbitrary kernel read primitive. 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"dataType": "CVE_RECORD",
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}
}
}
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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.
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.
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