FKIE_CVE-2024-41051
Vulnerability from fkie_nvd - Published: 2024-07-29 15:15 - Updated: 2026-08-04 11:19
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/
Summary
In the Linux kernel, the following vulnerability has been resolved:
cachefiles: wait for ondemand_object_worker to finish when dropping object
When queuing ondemand_object_worker() to re-open the object,
cachefiles_object is not pinned. The cachefiles_object may be freed when
the pending read request is completed intentionally and the related
erofs is umounted. If ondemand_object_worker() runs after the object is
freed, it will incur use-after-free problem as shown below.
process A processs B process C process D
cachefiles_ondemand_send_req()
// send a read req X
// wait for its completion
// close ondemand fd
cachefiles_ondemand_fd_release()
// set object as CLOSE
cachefiles_ondemand_daemon_read()
// set object as REOPENING
queue_work(fscache_wq, &info->ondemand_work)
// close /dev/cachefiles
cachefiles_daemon_release
cachefiles_flush_reqs
complete(&req->done)
// read req X is completed
// umount the erofs fs
cachefiles_put_object()
// object will be freed
cachefiles_ondemand_deinit_obj_info()
kmem_cache_free(object)
// both info and object are freed
ondemand_object_worker()
When dropping an object, it is no longer necessary to reopen the object,
so use cancel_work_sync() to cancel or wait for ondemand_object_worker()
to finish.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | 6.10 | |
| linux | linux_kernel | 6.10 | |
| linux | linux_kernel | 6.10 | |
| linux | linux_kernel | 6.10 | |
| linux | linux_kernel | 6.10 | |
| linux | linux_kernel | 6.10 | |
| linux | linux_kernel | 6.10 |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/cachefiles/ondemand.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "ec9289369259d982e735a71437e32e6b4035290c",
"status": "affected",
"version": "f17443d52d805c9a7fab5e67a4e8b973626fe1cd",
"versionType": "git"
},
{
"lessThan": "d3179bae72b1b5e555ba839d6d9f40a350a4d78a",
"status": "affected",
"version": "f740fd943bb1fbf79b7eaba3c71eb7536f437f51",
"versionType": "git"
},
{
"lessThan": "b26525b2183632f16a3a4108fe6a4bfa8afac6ed",
"status": "affected",
"version": "0a7e54c1959c0feb2de23397ec09c7692364313e",
"versionType": "git"
},
{
"lessThan": "12e009d60852f7bce0afc373ca0b320f14150418",
"status": "affected",
"version": "0a7e54c1959c0feb2de23397ec09c7692364313e",
"versionType": "git"
},
{
"lessThan": "6.1.100",
"status": "affected",
"version": "6.1.95",
"versionType": "semver"
},
{
"lessThan": "6.6.41",
"status": "affected",
"version": "6.6.35",
"versionType": "semver"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/cachefiles/ondemand.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.8"
},
{
"lessThan": "6.8",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.100",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.41",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.9.*",
"status": "unaffected",
"version": "6.9.10",
"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": "9660509A-A7A9-4DF8-9C10-10EB2BE6B935",
"versionEndExcluding": "6.1.100",
"versionStartIncluding": "6.1.95",
"vulnerable": true
},
{
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"versionEndExcluding": "6.6.41",
"versionStartIncluding": "6.6.35",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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},
{
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"vulnerable": true
},
{
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:6.10:rc5:*:*:*:*:*:*",
"matchCriteriaId": "BD973AA4-A789-49BD-8D57-B2846935D3C7",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.10:rc6:*:*:*:*:*:*",
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"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.10:rc7:*:*:*:*:*:*",
"matchCriteriaId": "11AF4CB9-F697-4EA4-8903-8F9417EFDA8E",
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}
],
"negate": false,
"operator": "OR"
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]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncachefiles: wait for ondemand_object_worker to finish when dropping object\n\nWhen queuing ondemand_object_worker() to re-open the object,\ncachefiles_object is not pinned. The cachefiles_object may be freed when\nthe pending read request is completed intentionally and the related\nerofs is umounted. If ondemand_object_worker() runs after the object is\nfreed, it will incur use-after-free problem as shown below.\n\nprocess A processs B process C process D\n\ncachefiles_ondemand_send_req()\n// send a read req X\n// wait for its completion\n\n // close ondemand fd\n cachefiles_ondemand_fd_release()\n // set object as CLOSE\n\n cachefiles_ondemand_daemon_read()\n // set object as REOPENING\n queue_work(fscache_wq, \u0026info-\u003eondemand_work)\n\n // close /dev/cachefiles\n cachefiles_daemon_release\n cachefiles_flush_reqs\n complete(\u0026req-\u003edone)\n\n// read req X is completed\n// umount the erofs fs\ncachefiles_put_object()\n// object will be freed\ncachefiles_ondemand_deinit_obj_info()\nkmem_cache_free(object)\n // both info and object are freed\n ondemand_object_worker()\n\nWhen dropping an object, it is no longer necessary to reopen the object,\nso use cancel_work_sync() to cancel or wait for ondemand_object_worker()\nto finish."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cachefiles: espere a que finalice ondemand_object_worker al soltar el objeto Al poner en cola ondemand_object_worker() para volver a abrir el objeto, cachefiles_object no est\u00e1 fijado. El objeto cachefiles_object se puede liberar cuando la solicitud de lectura pendiente se completa intencionalmente y se desmontan los erofs relacionados. Si ondemand_object_worker() se ejecuta despu\u00e9s de liberar el objeto, incurrir\u00e1 en un problema de use after free como se muestra a continuaci\u00f3n. proceso A procesos B proceso C proceso D cachefiles_ondemand_send_req() // env\u00eda una solicitud de lectura X // espera a que se complete // cierra ondemand fd cachefiles_ondemand_fd_release() // establece el objeto como CERRAR cachefiles_ondemand_daemon_read() // establece el objeto como REAPERTURA queue_work(fscache_wq , \u0026amp;info-\u0026gt;ondemand_work) // cerrar /dev/cachefiles cachefiles_daemon_release cachefiles_flush_reqs complete(\u0026amp;req-\u0026gt;done) // leer la solicitud X est\u00e1 completa // desmontar el erofs fs cachefiles_put_object() // el objeto ser\u00e1 liberado cachefiles_ondemand_deinit_obj_info() kmem_cache_free(object ) // tanto la informaci\u00f3n como el objeto se liberan ondemand_object_worker() Cuando se suelta un objeto, ya no es necesario volver a abrirlo, as\u00ed que use cancel_work_sync() para cancelar o espere a que finalice ondemand_object_worker()."
}
],
"id": "CVE-2024-41051",
"lastModified": "2026-08-04T11:19:23.353",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"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"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
},
{
"cvssData": {
"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"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2024-41051",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-09-10T16:22:41.369243Z",
"version": "2.0.3"
}
}
]
},
"published": "2024-07-29T15:15:13.327",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
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],
"url": "https://git.kernel.org/stable/c/12e009d60852f7bce0afc373ca0b320f14150418"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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},
{
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{
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{
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},
{
"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"
}
]
}
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