CVE-2022-49685
Estado: AnalizadaAlta (7.8)—
In the Linux kernel, the following vulnerability has been resolved:
iio: trigger: sysfs: fix use-after-free on remove
Ensure that the irq_work has completed before the trigger is freed.
==================================================================
Detalles técnicos trazas, registros y código del informe original
================================================================== BUG: KASAN: use-after-free in irq_work_run_list Read of size 8 at addr 0000000064702248 by task python3/25 Call Trace: irq_work_run_list irq_work_tick update_process_times tick_sched_handle tick_sched_timer __hrtimer_run_queues hrtimer_interrupt Allocated by task 25: kmem_cache_alloc_trace iio_sysfs_trig_add dev_attr_store sysfs_kf_write kernfs_fop_write_iter new_sync_write vfs_write ksys_write sys_write Freed by task 25: kfree iio_sysfs_trig_remove dev_attr_store sysfs_kf_write kernfs_fop_write_iter new_sync_write vfs_write ksys_write sys_write
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 7.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.28%
- Percentil entre todas las CVEs puntuadas: 18
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1068Exploitation for Privilege Escalationprivilege escalation75 % - Impacto principal
T1059Command and Scripting Interpreterexecution60 %
Vulnerabilidad de use-after-free (CWE-416) en kernel Linux con acceso local sin privilegios de root requeridos (PR:L). Permite ejecución de código arbitrario mediante liberación de memoria prematuro en iio_sysfs_trig_remove durante operación sysfs, escalando privilegios localmente.
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
CWE
- CWE-416
Referencias
- https://git.kernel.org/stable/c/31ff3309b47d98313c61b8301bf595820cc3cc33
- https://git.kernel.org/stable/c/4687c3f955240ca2a576bdc3f742d4d915b6272d
- https://git.kernel.org/stable/c/4ef1e521be610b720daeb7cf899fedc7db0274c4
- https://git.kernel.org/stable/c/5e39397d60dacc7f5d81d442c1c958eaaaf31128
- https://git.kernel.org/stable/c/78601726d4a59a291acc5a52da1d3a0a6831e4e8
- https://git.kernel.org/stable/c/b07a30a774b3c3e584a68dc91779c68ea2da4813
- https://git.kernel.org/stable/c/d6111e7bdb8ec27eb43d01c4cd4ff1620a75f7f2
- https://git.kernel.org/stable/c/fd5d8fb298a2866c337da635c79d63c3afabcaf7
JSON original (NVD)
Mostrar
{
"id": "CVE-2022-49685",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2022-49685",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2025-02-27T18:15:09.914625Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.8,
"attackVector": "LOCAL",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 1.8
}
]
},
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "f38bc926d022ebd67baad6ac7fc22c95fbc6238c",
"lessThan": "d6111e7bdb8ec27eb43d01c4cd4ff1620a75f7f2",
"versionType": "git"
},
{
"status": "affected",
"version": "f38bc926d022ebd67baad6ac7fc22c95fbc6238c",
"lessThan": "fd5d8fb298a2866c337da635c79d63c3afabcaf7",
"versionType": "git"
},
{
"status": "affected",
"version": "f38bc926d022ebd67baad6ac7fc22c95fbc6238c",
"lessThan": "31ff3309b47d98313c61b8301bf595820cc3cc33",
"versionType": "git"
},
{
"status": "affected",
"version": "f38bc926d022ebd67baad6ac7fc22c95fbc6238c",
"lessThan": "5e39397d60dacc7f5d81d442c1c958eaaaf31128",
"versionType": "git"
},
{
"status": "affected",
"version": "f38bc926d022ebd67baad6ac7fc22c95fbc6238c",
"lessThan": "b07a30a774b3c3e584a68dc91779c68ea2da4813",
"versionType": "git"
},
{
"status": "affected",
"version": "f38bc926d022ebd67baad6ac7fc22c95fbc6238c",
"lessThan": "4687c3f955240ca2a576bdc3f742d4d915b6272d",
"versionType": "git"
},
{
"status": "affected",
"version": "f38bc926d022ebd67baad6ac7fc22c95fbc6238c",
"lessThan": "4ef1e521be610b720daeb7cf899fedc7db0274c4",
"versionType": "git"
},
{
"status": "affected",
"version": "f38bc926d022ebd67baad6ac7fc22c95fbc6238c",
"lessThan": "78601726d4a59a291acc5a52da1d3a0a6831e4e8",
"versionType": "git"
}
],
"programFiles": [
"drivers/iio/trigger/iio-trig-sysfs.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.7"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.7",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.9.321",
"versionType": "semver",
"lessThanOrEqual": "4.9.*"
},
{
"status": "unaffected",
"version": "4.14.286",
"versionType": "semver",
"lessThanOrEqual": "4.14.*"
},
{
"status": "unaffected",
"version": "4.19.250",
"versionType": "semver",
"lessThanOrEqual": "4.19.*"
},
{
"status": "unaffected",
"version": "5.4.202",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.127",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.51",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "5.18.8",
"versionType": "semver",
"lessThanOrEqual": "5.18.*"
},
{
"status": "unaffected",
"version": "5.19",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/iio/trigger/iio-trig-sysfs.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2025-02-26T07:01:43.340",
"references": [
{
"url": "https://git.kernel.org/stable/c/31ff3309b47d98313c61b8301bf595820cc3cc33",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/4687c3f955240ca2a576bdc3f742d4d915b6272d",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/4ef1e521be610b720daeb7cf899fedc7db0274c4",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/5e39397d60dacc7f5d81d442c1c958eaaaf31128",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/78601726d4a59a291acc5a52da1d3a0a6831e4e8",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/b07a30a774b3c3e584a68dc91779c68ea2da4813",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/d6111e7bdb8ec27eb43d01c4cd4ff1620a75f7f2",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/fd5d8fb298a2866c337da635c79d63c3afabcaf7",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"description": [
{
"lang": "en",
"value": "CWE-416"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: trigger: sysfs: fix use-after-free on remove\n\nEnsure that the irq_work has completed before the trigger is freed.\n\n ==================================================================\n BUG: KASAN: use-after-free in irq_work_run_list\n Read of size 8 at addr 0000000064702248 by task python3/25\n\n Call Trace:\n irq_work_run_list\n irq_work_tick\n update_process_times\n tick_sched_handle\n tick_sched_timer\n __hrtimer_run_queues\n hrtimer_interrupt\n\n Allocated by task 25:\n kmem_cache_alloc_trace\n iio_sysfs_trig_add\n dev_attr_store\n sysfs_kf_write\n kernfs_fop_write_iter\n new_sync_write\n vfs_write\n ksys_write\n sys_write\n\n Freed by task 25:\n kfree\n iio_sysfs_trig_remove\n dev_attr_store\n sysfs_kf_write\n kernfs_fop_write_iter\n new_sync_write\n vfs_write\n ksys_write\n sys_write\n\n =================================================================="
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: iio: trigger: sysfs: fix use-after-free on remove Asegúrese de que irq_work se haya completado antes de que se libere el disparador.================================================================== BUG: KASAN: use-after-free in irq_work_run_list Read of size 8 at addr 0000000064702248 by task python3/25 Call Trace: irq_work_run_list irq_work_tick update_process_times tick_sched_handle tick_sched_timer __hrtimer_run_queues hrtimer_interrupt Allocated by task 25: kmem_cache_alloc_trace iio_sysfs_trig_add dev_attr_store sysfs_kf_write kernfs_fop_write_iter new_sync_write vfs_write ksys_write sys_write Freed by task 25: kfree iio_sysfs_trig_remove dev_attr_store sysfs_kf_write kernfs_fop_write_iter new_sync_write vfs_write ksys_write sys_write ================================================================== "
}
],
"lastModified": "2026-06-17T05:18:51.680",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "59A5EE02-2844-49CB-93F4-511FFBACF9CF",
"versionEndExcluding": "4.9.321",
"versionStartIncluding": "3.7"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1425627F-375A-4BB1-9AB9-5EE617FF8D45",
"versionEndExcluding": "4.14.286",
"versionStartIncluding": "4.10"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "022AD3A2-7FC8-41A3-9709-72100A894A55",
"versionEndExcluding": "4.19.250",
"versionStartIncluding": "4.15"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F90471AA-9F14-4DC3-9688-99E9F537D3F1",
"versionEndExcluding": "5.4.202",
"versionStartIncluding": "4.20"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "758A1E17-EBCF-401B-83C7-B682D38D61BE",
"versionEndExcluding": "5.10.127",
"versionStartIncluding": "5.5"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B43F7696-8D52-482D-9080-84279B0CB38C",
"versionEndExcluding": "5.15.51",
"versionStartIncluding": "5.11"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0172D3FA-DDEB-482A-A270-4A1495A8798C",
"versionEndExcluding": "5.18.8",
"versionStartIncluding": "5.16"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A8C30C2D-F82D-4D37-AB48-D76ABFBD5377"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "BF8547FC-C849-4F1B-804B-A93AE2F04A92"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F3068028-F453-4A1C-B80F-3F5609ACEF60"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}