CVE-2024-50127 (GCVE-0-2024-50127)
Vulnerability from cvelistv5 – Published: 2024-11-05 17:10 – Updated: 2026-08-05 11:41
VLAI
EPSS
VEX
Title
net: sched: fix use-after-free in taprio_change()
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: sched: fix use-after-free in taprio_change()
In 'taprio_change()', 'admin' pointer may become dangling due to sched
switch / removal caused by 'advance_sched()', and critical section
protected by 'q->current_entry_lock' is too small to prevent from such
a scenario (which causes use-after-free detected by KASAN). Fix this
by prefer 'rcu_replace_pointer()' over 'rcu_assign_pointer()' to update
'admin' immediately before an attempt to schedule freeing.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-12-11 14:28 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
10 references
Impacted products
3 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
a3d43c0d56f1b94e74963a2fbadfb70126d92213 , < 2f868ce6013548a713c431c679ef73747a66fcf3
(git)
Affected: a3d43c0d56f1b94e74963a2fbadfb70126d92213 , < 8a283a19026aaae8a773fd8061263cfa315b127f (git) Affected: a3d43c0d56f1b94e74963a2fbadfb70126d92213 , < 999612996df28d81f163dad530d7f8026e03aec6 (git) Affected: a3d43c0d56f1b94e74963a2fbadfb70126d92213 , < fe371f084073e8672a2d7d46b335c3c060d1e301 (git) Affected: a3d43c0d56f1b94e74963a2fbadfb70126d92213 , < 0d4c0d2844e4eac3aed647f948fd7e60eea56a61 (git) Affected: a3d43c0d56f1b94e74963a2fbadfb70126d92213 , < 2240f9376f20f8b6463232b4ca7292569217237f (git) Affected: a3d43c0d56f1b94e74963a2fbadfb70126d92213 , < f504465970aebb2467da548f7c1efbbf36d0f44b (git) |
guessed | |
| Linux | Linux |
Affected:
5.2
Unaffected: 0 , < 5.2 (semver) Unaffected: 5.4.285 , ≤ 5.4.* (semver) Unaffected: 5.10.229 , ≤ 5.10.* (semver) Unaffected: 5.15.170 , ≤ 5.15.* (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 | |
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem |
Affected:
0 , < *
(custom)
|
guessed |
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: sched: fix use-after-free in taprio_change()\n\nIn \u0027taprio_change()\u0027, \u0027admin\u0027 pointer may become dangling due to sched\nswitch / removal caused by \u0027advance_sched()\u0027, and critical section\nprotected by \u0027q-\u003ecurrent_entry_lock\u0027 is too small to prevent from such\na scenario (which causes use-after-free detected by KASAN). Fix this\nby prefer \u0027rcu_replace_pointer()\u0027 over \u0027rcu_assign_pointer()\u0027 to update\n\u0027admin\u0027 immediately before an attempt to schedule freeing."
},
{
"lang": "es",
"value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: sched: arreglado use-after-free en taprio_change(). En \u0027taprio_change()\u0027, el puntero \u0027admin\u0027 puede quedar colgando debido al cambio/eliminaci\u00f3n de sched causado por \u0027advance_sched()\u0027, y la secci\u00f3n cr\u00edtica protegida por \u0027q-\u0026gt;current_entry_lock\u0027 es demasiado peque\u00f1a para evitar tal escenario (que causa el use-after-free detectado por KASAN). Solucione esto al preferir \u0027rcu_replace_pointer()\u0027 sobre \u0027rcu_assign_pointer()\u0027 para actualizar \u0027admin\u0027 inmediatamente antes de un intento de liberaci\u00f3n de programaci\u00f3n."
}
],
"id": "CVE-2024-50127",
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"metrics": {
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"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
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{
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"url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
}
],
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"current_release_date": "2026-06-28T11:24:30+00:00",
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"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-50127.json",
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},
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"title": "CISA ADP Vulnrichment"
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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.
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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