CVE-2024-49927 (GCVE-0-2024-49927)
Vulnerability from cvelistv5 – Published: 2024-10-21 18:01 – Updated: 2026-05-11 20:41
VLAI
EPSS
VEX
Title
x86/ioapic: Handle allocation failures gracefully
Summary
In the Linux kernel, the following vulnerability has been resolved:
x86/ioapic: Handle allocation failures gracefully
Breno observed panics when using failslab under certain conditions during
runtime:
can not alloc irq_pin_list (-1,0,20)
Kernel panic - not syncing: IO-APIC: failed to add irq-pin. Can not proceed
panic+0x4e9/0x590
mp_irqdomain_alloc+0x9ab/0xa80
irq_domain_alloc_irqs_locked+0x25d/0x8d0
__irq_domain_alloc_irqs+0x80/0x110
mp_map_pin_to_irq+0x645/0x890
acpi_register_gsi_ioapic+0xe6/0x150
hpet_open+0x313/0x480
That's a pointless panic which is a leftover of the historic IO/APIC code
which panic'ed during early boot when the interrupt allocation failed.
The only place which might justify panic is the PIT/HPET timer_check() code
which tries to figure out whether the timer interrupt is delivered through
the IO/APIC. But that code does not require to handle interrupt allocation
failures. If the interrupt cannot be allocated then timer delivery fails
and it either panics due to that or falls back to legacy mode.
Cure this by removing the panic wrapper around __add_pin_to_irq_node() and
making mp_irqdomain_alloc() aware of the failure condition and handle it as
any other failure in this function gracefully.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-22 13:39 UTC
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
49c7e60022912d10da88ba67e8eb2927f1143f6a , < e479cb835feeb2abff97f25766e23b96a6eabe28
(git)
Affected: 49c7e60022912d10da88ba67e8eb2927f1143f6a , < ec862cd843faa6f0e84a7a07362f2786446bf697 (git) Affected: 49c7e60022912d10da88ba67e8eb2927f1143f6a , < 077e1b7cd521163ded545987bbbd389519aeed71 (git) Affected: 49c7e60022912d10da88ba67e8eb2927f1143f6a , < 649a5c2ffae797ce792023a70e84c7fe4b6fb8e0 (git) Affected: 49c7e60022912d10da88ba67e8eb2927f1143f6a , < f17efbeb2922327ea01a9efa8829fea9a30e547d (git) Affected: 49c7e60022912d10da88ba67e8eb2927f1143f6a , < 830802a0fea8fb39d3dc9fb7d6b5581e1343eb1f (git) |
guessed | |
| Linux | Linux |
Affected:
4.2
Unaffected: 0 , < 4.2 (semver) Unaffected: 5.15.168 , ≤ 5.15.* (semver) Unaffected: 6.1.113 , ≤ 6.1.* (semver) Unaffected: 6.6.55 , ≤ 6.6.* (semver) Unaffected: 6.10.14 , ≤ 6.10.* (semver) Unaffected: 6.11.3 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix) |
guessed |
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: x86/ioapic: Manejar errores de asignaci\u00f3n con elegancia Breno observ\u00f3 p\u00e1nicos al usar failslab bajo ciertas condiciones durante el tiempo de ejecuci\u00f3n: no se puede asignar irq_pin_list (-1,0,20) P\u00e1nico del kernel: no se sincroniza: IO-APIC: no se pudo agregar irq-pin. No se puede continuar panic+0x4e9/0x590 mp_irqdomain_alloc+0x9ab/0xa80 irq_domain_alloc_irqs_locked+0x25d/0x8d0 __irq_domain_alloc_irqs+0x80/0x110 mp_map_pin_to_irq+0x645/0x890 acpi_register_gsi_ioapic+0xe6/0x150 hpet_open+0x313/0x480 Ese es un p\u00e1nico sin sentido que es un remanente del c\u00f3digo IO/APIC hist\u00f3rico que entr\u00f3 en p\u00e1nico durante el arranque temprano cuando fall\u00f3 la asignaci\u00f3n de interrupci\u00f3n. El \u00fanico lugar que podr\u00eda justificar el p\u00e1nico es el c\u00f3digo timer_check() de PIT/HPET que intenta averiguar si la interrupci\u00f3n del temporizador se entrega a trav\u00e9s de IO/APIC. Pero ese c\u00f3digo no requiere manejar fallos de asignaci\u00f3n de interrupciones. Si no se puede asignar la interrupci\u00f3n, la entrega del temporizador fallo y entra en p\u00e1nico debido a eso o vuelve al modo heredado. Solucione esto eliminando el contenedor de p\u00e1nico alrededor de __add_pin_to_irq_node() y haciendo que mp_irqdomain_alloc() sea consciente de la condici\u00f3n de fallo y la maneje como cualquier otra fallo en esta funci\u00f3n de manera elegante."
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],
"url": "https://git.kernel.org/stable/c/ec862cd843faa6f0e84a7a07362f2786446bf697"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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],
"url": "https://git.kernel.org/stable/c/f17efbeb2922327ea01a9efa8829fea9a30e547d"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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}
],
"source": "nvd@nist.gov",
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"current_release_date": "2026-11-05T13:08:47+00:00",
"cve": "CVE-2024-49927",
"id": "CVE-2024-49927",
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"product_status:fixed": "305",
"product_status:known_affected": "90",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: x86/ioapic: Handle allocation failures gracefully",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-49927.json",
"version": "3"
},
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/ioapic: Handle allocation failures gracefully\n\nBreno observed panics when using failslab under certain conditions during\nruntime:\n\n can not alloc irq_pin_list (-1,0,20)\n Kernel panic - not syncing: IO-APIC: failed to add irq-pin. Can not proceed\n\n panic+0x4e9/0x590\n mp_irqdomain_alloc+0x9ab/0xa80\n irq_domain_alloc_irqs_locked+0x25d/0x8d0\n __irq_domain_alloc_irqs+0x80/0x110\n mp_map_pin_to_irq+0x645/0x890\n acpi_register_gsi_ioapic+0xe6/0x150\n hpet_open+0x313/0x480\n\nThat\u0027s a pointless panic which is a leftover of the historic IO/APIC code\nwhich panic\u0027ed during early boot when the interrupt allocation failed.\n\nThe only place which might justify panic is the PIT/HPET timer_check() code\nwhich tries to figure out whether the timer interrupt is delivered through\nthe IO/APIC. But that code does not require to handle interrupt allocation\nfailures. If the interrupt cannot be allocated then timer delivery fails\nand it either panics due to that or falls back to legacy mode.\n\nCure this by removing the panic wrapper around __add_pin_to_irq_node() and\nmaking mp_irqdomain_alloc() aware of the failure condition and handle it as\nany other failure in this function gracefully."
}
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}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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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.