FKIE_CVE-2024-38618
Vulnerability from fkie_nvd - Published: 2024-06-19 14:15 - Updated: 2026-06-17 07:40
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
5.3 (Medium) - CVSS:3.1/
Summary
In the Linux kernel, the following vulnerability has been resolved:
ALSA: timer: Set lower bound of start tick time
Currently ALSA timer doesn't have the lower limit of the start tick
time, and it allows a very small size, e.g. 1 tick with 1ns resolution
for hrtimer. Such a situation may lead to an unexpected RCU stall,
where the callback repeatedly queuing the expire update, as reported
by fuzzer.
This patch introduces a sanity check of the timer start tick time, so
that the system returns an error when a too small start size is set.
As of this patch, the lower limit is hard-coded to 100us, which is
small enough but can still work somehow.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"sound/core/timer.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "68396c825c43664b20a3a1ba546844deb2b4e48f",
"status": "affected",
"version": "bbaf5e97337287479eb78dbc3822d9560bbfd2e2",
"versionType": "git"
},
{
"lessThan": "74bfb8d90f2601718ae203faf45a196844c01fa1",
"status": "affected",
"version": "bbaf5e97337287479eb78dbc3822d9560bbfd2e2",
"versionType": "git"
},
{
"lessThan": "bdd0aa055b8ec7e24bbc19513f3231958741d0ab",
"status": "affected",
"version": "bbaf5e97337287479eb78dbc3822d9560bbfd2e2",
"versionType": "git"
},
{
"lessThan": "83f0ba8592b9e258fd80ac6486510ab1dcd7ad6e",
"status": "affected",
"version": "bbaf5e97337287479eb78dbc3822d9560bbfd2e2",
"versionType": "git"
},
{
"lessThan": "ceab795a67dd28dd942d0d8bba648c6c0f7a044b",
"status": "affected",
"version": "bbaf5e97337287479eb78dbc3822d9560bbfd2e2",
"versionType": "git"
},
{
"lessThan": "2c95241ac5fc90c929d6c0c023e84bf0d30e84c3",
"status": "affected",
"version": "bbaf5e97337287479eb78dbc3822d9560bbfd2e2",
"versionType": "git"
},
{
"lessThan": "abb1ad69d98cf1ff25bb14fff0e7c3f66239e1cd",
"status": "affected",
"version": "bbaf5e97337287479eb78dbc3822d9560bbfd2e2",
"versionType": "git"
},
{
"lessThan": "4a63bd179fa8d3fcc44a0d9d71d941ddd62f0c4e",
"status": "affected",
"version": "bbaf5e97337287479eb78dbc3822d9560bbfd2e2",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"sound/core/timer.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.29"
},
{
"lessThan": "2.6.29",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"version": "4.19.316",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.278",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.219",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.161",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.93",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.33",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.9.*",
"status": "unaffected",
"version": "6.9.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.10",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "86D353F1-8F3A-45CF-8A7A-0DB46F77D2BF",
"versionEndExcluding": "4.19.316",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "7FDBF235-DA18-49A1-8690-6C7272FD0701",
"versionEndExcluding": "5.4.278",
"versionStartIncluding": "4.20",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "E9063AF3-D593-43B7-810D-58B87F82F9F9",
"versionEndExcluding": "5.10.219",
"versionStartIncluding": "5.5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "31130639-53FE-4726-8986-434EE2528CB2",
"versionEndExcluding": "5.15.161",
"versionStartIncluding": "5.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "EEFB78EE-F990-4197-BF1C-156760A55667",
"versionEndExcluding": "6.1.93",
"versionStartIncluding": "5.16",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "FCE796DF-3B50-4DC6-BAE5-95271068FC9E",
"versionEndExcluding": "6.6.33",
"versionStartIncluding": "6.2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "FCA0512F-0CF0-452C-AC87-115E8529DE51",
"versionEndExcluding": "6.9.3",
"versionStartIncluding": "6.7",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: timer: Set lower bound of start tick time\n\nCurrently ALSA timer doesn\u0027t have the lower limit of the start tick\ntime, and it allows a very small size, e.g. 1 tick with 1ns resolution\nfor hrtimer. Such a situation may lead to an unexpected RCU stall,\nwhere the callback repeatedly queuing the expire update, as reported\nby fuzzer.\n\nThis patch introduces a sanity check of the timer start tick time, so\nthat the system returns an error when a too small start size is set.\nAs of this patch, the lower limit is hard-coded to 100us, which is\nsmall enough but can still work somehow."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ALSA: temporizador: establece el l\u00edmite inferior del tiempo de inicio. Actualmente, el temporizador ALSA no tiene el l\u00edmite inferior del tiempo de inicio y permite un tama\u00f1o muy peque\u00f1o, por ejemplo, 1 tic. con resoluci\u00f3n de 1ns para hrtimer. Tal situaci\u00f3n puede provocar una parada inesperada de la RCU, donde la devoluci\u00f3n de llamada pone en cola repetidamente la actualizaci\u00f3n caducada, seg\u00fan lo informado por fuzzer. Este parche introduce una verificaci\u00f3n de cordura del tiempo de inicio del temporizador, de modo que el sistema devuelve un error cuando se establece un tama\u00f1o de inicio demasiado peque\u00f1o. A partir de este parche, el l\u00edmite inferior est\u00e1 codificado en 100us, que es bastante peque\u00f1o pero a\u00fan puede funcionar de alguna manera."
}
],
"id": "CVE-2024-38618",
"lastModified": "2026-06-17T07:40:43.870",
"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"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 1.4,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2024-38618",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-06-21T16:01:19.317734Z",
"version": "2.0.3"
}
}
]
},
"published": "2024-06-19T14:15:21.567",
"references": [
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"tags": [
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"url": "https://git.kernel.org/stable/c/2c95241ac5fc90c929d6c0c023e84bf0d30e84c3"
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{
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}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
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{
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"value": "NVD-CWE-noinfo"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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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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