FKIE_CVE-2024-46698
Vulnerability from fkie_nvd - Published: 2024-09-13 06:15 - Updated: 2026-06-17 07:55
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
video/aperture: optionally match the device in sysfb_disable()
In aperture_remove_conflicting_pci_devices(), we currently only
call sysfb_disable() on vga class devices. This leads to the
following problem when the pimary device is not VGA compatible:
1. A PCI device with a non-VGA class is the boot display
2. That device is probed first and it is not a VGA device so
sysfb_disable() is not called, but the device resources
are freed by aperture_detach_platform_device()
3. Non-primary GPU has a VGA class and it ends up calling sysfb_disable()
4. NULL pointer dereference via sysfb_disable() since the resources
have already been freed by aperture_detach_platform_device() when
it was called by the other device.
Fix this by passing a device pointer to sysfb_disable() and checking
the device to determine if we should execute it or not.
v2: Fix build when CONFIG_SCREEN_INFO is not set
v3: Move device check into the mutex
Drop primary variable in aperture_remove_conflicting_pci_devices()
Drop __init on pci sysfb_pci_dev_is_enabled()
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | 6.11 | |
| linux | linux_kernel | 6.11 | |
| linux | linux_kernel | 6.11 | |
| linux | linux_kernel | 6.11 | |
| linux | linux_kernel | 6.11 |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/firmware/sysfb.c",
"drivers/of/platform.c",
"drivers/video/aperture.c",
"include/linux/sysfb.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "17e78f43de0c6da34204cc858b4cc05671ea9acf",
"status": "affected",
"version": "5ae3716cfdcd286268133867f67d0803847acefc",
"versionType": "git"
},
{
"lessThan": "b49420d6a1aeb399e5b107fc6eb8584d0860fbd7",
"status": "affected",
"version": "5ae3716cfdcd286268133867f67d0803847acefc",
"versionType": "git"
},
{
"status": "affected",
"version": "485ec8f8e1d8ae12aa1daa5ad345ba8940ad2db7",
"versionType": "git"
},
{
"lessThan": "6.2",
"status": "affected",
"version": "6.1.47",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/firmware/sysfb.c",
"drivers/of/platform.c",
"drivers/video/aperture.c",
"include/linux/sysfb.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.5"
},
{
"lessThan": "6.5",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.10.*",
"status": "unaffected",
"version": "6.10.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.11",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "44B0C10F-3694-48FB-9556-944BD815090B",
"versionEndExcluding": "6.10.8",
"versionStartIncluding": "6.5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*",
"matchCriteriaId": "8B3CE743-2126-47A3-8B7C-822B502CF119",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*",
"matchCriteriaId": "4DEB27E7-30AA-45CC-8934-B89263EF3551",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*",
"matchCriteriaId": "E0005AEF-856E-47EB-BFE4-90C46899394D",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:*",
"matchCriteriaId": "39889A68-6D34-47A6-82FC-CD0BF23D6754",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.11:rc5:*:*:*:*:*:*",
"matchCriteriaId": "B8383ABF-1457-401F-9B61-EE50F4C61F4F",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvideo/aperture: optionally match the device in sysfb_disable()\n\nIn aperture_remove_conflicting_pci_devices(), we currently only\ncall sysfb_disable() on vga class devices. This leads to the\nfollowing problem when the pimary device is not VGA compatible:\n\n1. A PCI device with a non-VGA class is the boot display\n2. That device is probed first and it is not a VGA device so\n sysfb_disable() is not called, but the device resources\n are freed by aperture_detach_platform_device()\n3. Non-primary GPU has a VGA class and it ends up calling sysfb_disable()\n4. NULL pointer dereference via sysfb_disable() since the resources\n have already been freed by aperture_detach_platform_device() when\n it was called by the other device.\n\nFix this by passing a device pointer to sysfb_disable() and checking\nthe device to determine if we should execute it or not.\n\nv2: Fix build when CONFIG_SCREEN_INFO is not set\nv3: Move device check into the mutex\n Drop primary variable in aperture_remove_conflicting_pci_devices()\n Drop __init on pci sysfb_pci_dev_is_enabled()"
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: video/aperture: opcionalmente hacer coincidir el dispositivo en sysfb_disable() En aperture_remove_conflicting_pci_devices(), actualmente solo llamamos a sysfb_disable() en dispositivos de clase vga. Esto lleva al siguiente problema cuando el dispositivo principal no es compatible con VGA: 1. Un dispositivo PCI con una clase que no es VGA es la pantalla de arranque 2. Ese dispositivo se sondea primero y no es un dispositivo VGA, por lo que no se llama a sysfb_disable(), pero los recursos del dispositivo se liberan mediante aperture_detach_platform_device() 3. La GPU no principal tiene una clase VGA y termina llamando a sysfb_disable() 4. Desreferencia de puntero NULL a trav\u00e9s de sysfb_disable() ya que los recursos ya se han liberado mediante aperture_detach_platform_device() cuando fue llamado por el otro dispositivo. Solucione esto pasando un puntero de dispositivo a sysfb_disable() y verificando el dispositivo para determinar si debemos ejecutarlo o no. v2: Arreglar la compilaci\u00f3n cuando CONFIG_SCREEN_INFO no est\u00e1 configurado v3: Mover la verificaci\u00f3n del dispositivo al mutex Eliminar la variable principal en aperture_remove_conflicting_pci_devices() Eliminar __init en pci sysfb_pci_dev_is_enabled()"
}
],
"id": "CVE-2024-46698",
"lastModified": "2026-06-17T07:55:45.233",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2024-46698",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-09-29T15:04:59.820597Z",
"version": "2.0.3"
}
}
]
},
"published": "2024-09-13T06:15:14.563",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/17e78f43de0c6da34204cc858b4cc05671ea9acf"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/b49420d6a1aeb399e5b107fc6eb8584d0860fbd7"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-476"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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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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