CVE-2024-50124 (GCVE-0-2024-50124)
Vulnerability from cvelistv5 – Published: 2024-11-05 17:10 – Updated: 2026-08-05 11:41
VLAI
EPSS
VEX
Title
Bluetooth: ISO: Fix UAF on iso_sock_timeout
Summary
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: ISO: Fix UAF on iso_sock_timeout
conn->sk maybe have been unlinked/freed while waiting for iso_conn_lock
so this checks if the conn->sk is still valid by checking if it part of
iso_sk_list.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-12-11 14:25 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
ccf74f2390d60a2f9a75ef496d2564abb478f46a , < 876ac72d535fa94f4ac57bba651987c6f990f646
(git)
Affected: ccf74f2390d60a2f9a75ef496d2564abb478f46a , < 14bcb721d241e62fdd18f6f434a2ed2ab6e71a9b (git) Affected: ccf74f2390d60a2f9a75ef496d2564abb478f46a , < d75aad1d3143ca68cda52ff80ac392e1bbd84325 (git) Affected: ccf74f2390d60a2f9a75ef496d2564abb478f46a , < 246b435ad668596aa0e2bbb9d491b6413861211a (git) |
guessed | |
| Linux | Linux |
Affected:
6.0
Unaffected: 0 , < 6.0 (semver) Unaffected: 6.1.115 , ≤ 6.1.* (semver) Unaffected: 6.6.59 , ≤ 6.6.* (semver) Unaffected: 6.11.6 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix) |
guessed |
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"baseScore": 8.0,
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"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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"impactScore": 5.9,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
},
{
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"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"cvssData": {
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"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2024-50124",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-12-11T14:25:58.935460Z",
"version": "2.0.3"
}
}
]
},
"published": "2024-11-05T18:15:15.487",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/14bcb721d241e62fdd18f6f434a2ed2ab6e71a9b"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/246b435ad668596aa0e2bbb9d491b6413861211a"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/876ac72d535fa94f4ac57bba651987c6f990f646"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/d75aad1d3143ca68cda52ff80ac392e1bbd84325"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-416"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-416"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-08-04T17:47:54+00:00",
"cve": "CVE-2024-50124",
"id": "CVE-2024-50124",
"initial_release_date": "2024-11-05T17:10:52.434000+00:00",
"product_status:fixed": "280",
"product_status:known_affected": "22",
"product_status:known_not_affected": "90",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: Bluetooth: ISO: Fix UAF on iso_sock_timeout",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-50124.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2026-09-19T02:15:50Z",
"cve": "CVE-2024-50124",
"id": "CVE-2024-50124",
"initial_release_date": "2024-11-06T03:48:48Z",
"product_status:known_affected": "374",
"product_status:known_not_affected": "401",
"product_status:recommended": "579",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2024-50124",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-50124.json",
"version": "70"
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2025-11-03T22:25:43.040Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2024-50124",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-12-11T14:25:58.935460Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-416",
"description": "CWE-416 Use After Free",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-12-11T14:26:00.242Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/bluetooth/iso.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
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"status": "affected",
"version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
"versionType": "git"
},
{
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"status": "affected",
"version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
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{
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"status": "affected",
"version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
"versionType": "git"
},
{
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"status": "affected",
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"versionType": "git"
}
]
},
{
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"product": "Linux",
"programFiles": [
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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"version": "6.0"
},
{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.1.115",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.6.59",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.11.6",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.12",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
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"versionEndExcluding": "6.1.115",
"versionStartIncluding": "6.0",
"vulnerable": true
},
{
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"versionEndExcluding": "6.6.59",
"versionStartIncluding": "6.0",
"vulnerable": true
},
{
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"versionEndExcluding": "6.11.6",
"versionStartIncluding": "6.0",
"vulnerable": true
},
{
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"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: Fix UAF on iso_sock_timeout\n\nconn-\u003esk maybe have been unlinked/freed while waiting for iso_conn_lock\nso this checks if the conn-\u003esk is still valid by checking if it part of\niso_sk_list."
}
],
"metrics": [
{
"cvssV3_1": {
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"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:A - The vulnerable `iso_conn` and its `timeout_work` exist only while a real ISO/CIS/BIS link or PA sync is established with an in-range Bluetooth LE Audio peer, and the second patched call site `iso_conn_del()` is driven directly by `iso_connect_cfm`/`iso_disconn_cfm` from adjacent-device HCI events. Bluetooth radio proximity is required, matching the Adjacent classification.\nAC:L - The attacker controls both sides of the race: `SO_SNDTIMEO` sets `sk-\u003esk_sndtimeo`, which `iso_connect_cis()`/`iso_connect_bis()` pass verbatim to `iso_sock_set_timer()`, so the timeout work can be scheduled to fire at an arbitrarily chosen moment and raced against `close()`, and `iso_sock_clear_timer()` uses non-sync `cancel_delayed_work()` so an in-flight work item is never waited for. The sequence is freely repeatable until it wins.\nPR:L - There is no `capable()` or `CAP_NET_*` check anywhere in `bt_sock_create()`, `iso_sock_create()`, `iso_sock_bind()`, `iso_sock_listen()` or `iso_sock_connect()`, so any unprivileged local user can create BTPROTO_ISO sockets and drive the connect/close sequence that frees the socket. Only basic local account access is needed, not root.\nUI:N - The whole sequence \u2014 socket creation, `SO_SNDTIMEO`, connect/listen, close \u2014 is performed by the attacker\u0027s own process against the system Bluetooth adapter. No victim action is required.\nS:U - The use-after-free corrupts kernel heap memory within the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - `iso_proto` is registered with `proto_register(\u0026iso_proto, 0)`, so `struct iso_pinfo` is allocated from the generic kmalloc caches; the attacker can respray the freed object and read its contents back through subsequent socket operations, giving a path to arbitrary kernel memory disclosure.\nI:H - The stale pointer is written through \u2014 `sock_hold()` performs an atomic increment on freed memory and `sk-\u003esk_err = ETIMEDOUT` writes into it \u2014 and `sk-\u003esk_state_change(sk)` performs an indirect call through a function pointer read from the freed object, providing a control-flow hijack primitive.\nA:H - Even without successful exploitation the UAF produces a KASAN splat, oops, or panic inside `iso_sock_timeout()` running on the system workqueue, and it can be triggered repeatedly by an unprivileged process."
}
]
}
],
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
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},
{
"url": "https://git.kernel.org/stable/c/14bcb721d241e62fdd18f6f434a2ed2ab6e71a9b"
},
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}
],
"title": "Bluetooth: ISO: Fix UAF on iso_sock_timeout",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2024-50124",
"datePublished": "2024-11-05T17:10:52.434Z",
"dateReserved": "2024-10-21T19:36:19.954Z",
"dateUpdated": "2026-08-05T11:41:49.895Z",
"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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