FKIE_CVE-2024-38582
Vulnerability from fkie_nvd - Published: 2024-06-19 14:15 - Updated: 2026-06-17 07:40
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
nilfs2: fix potential hang in nilfs_detach_log_writer()
Syzbot has reported a potential hang in nilfs_detach_log_writer() called
during nilfs2 unmount.
Analysis revealed that this is because nilfs_segctor_sync(), which
synchronizes with the log writer thread, can be called after
nilfs_segctor_destroy() terminates that thread, as shown in the call trace
below:
nilfs_detach_log_writer
nilfs_segctor_destroy
nilfs_segctor_kill_thread --> Shut down log writer thread
flush_work
nilfs_iput_work_func
nilfs_dispose_list
iput
nilfs_evict_inode
nilfs_transaction_commit
nilfs_construct_segment (if inode needs sync)
nilfs_segctor_sync --> Attempt to synchronize with
log writer thread
*** DEADLOCK ***
Fix this issue by changing nilfs_segctor_sync() so that the log writer
thread returns normally without synchronizing after it terminates, and by
forcing tasks that are already waiting to complete once after the thread
terminates.
The skipped inode metadata flushout will then be processed together in the
subsequent cleanup work in nilfs_segctor_destroy().
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 | * | |
| linux | linux_kernel | * |
{
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{
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},
{
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}
]
},
{
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"product": "Linux",
"programFiles": [
"fs/nilfs2/segment.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
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"version": "3.19"
},
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"status": "unaffected",
"version": "0",
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},
{
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"version": "4.19.316",
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},
{
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"version": "5.4.278",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "5.10.219",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "5.15.161",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.1.93",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.33",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.8.*",
"status": "unaffected",
"version": "6.8.12",
"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": [
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix potential hang in nilfs_detach_log_writer()\n\nSyzbot has reported a potential hang in nilfs_detach_log_writer() called\nduring nilfs2 unmount.\n\nAnalysis revealed that this is because nilfs_segctor_sync(), which\nsynchronizes with the log writer thread, can be called after\nnilfs_segctor_destroy() terminates that thread, as shown in the call trace\nbelow:\n\nnilfs_detach_log_writer\n nilfs_segctor_destroy\n nilfs_segctor_kill_thread --\u003e Shut down log writer thread\n flush_work\n nilfs_iput_work_func\n nilfs_dispose_list\n iput\n nilfs_evict_inode\n nilfs_transaction_commit\n nilfs_construct_segment (if inode needs sync)\n nilfs_segctor_sync --\u003e Attempt to synchronize with\n log writer thread\n *** DEADLOCK ***\n\nFix this issue by changing nilfs_segctor_sync() so that the log writer\nthread returns normally without synchronizing after it terminates, and by\nforcing tasks that are already waiting to complete once after the thread\nterminates.\n\nThe skipped inode metadata flushout will then be processed together in the\nsubsequent cleanup work in nilfs_segctor_destroy()."
},
{
"lang": "es",
"value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: nilfs2: soluciona un posible bloqueo en nilfs_detach_log_writer() Syzbot ha informado de un posible bloqueo en nilfs_detach_log_writer() llamado durante el desmontaje de nilfs2. El an\u00e1lisis revel\u00f3 que esto se debe a que nilfs_segctor_sync(), que se sincroniza con el hilo del escritor de registros, puede ser llamado despu\u00e9s de que nilfs_segctor_destroy() finalice ese hilo, como se muestra en el seguimiento de llamadas a continuaci\u00f3n: nilfs_detach_log_writer nilfs_segctor_destroy nilfs_segctor_kill_thread --\u0026gt; Apagar el hilo del escritor de registros Flush_work nilfs_iput_work_func nilfs_dispose_list iput nilfs_evict_inode nilfs_transaction_commit nilfs_construct_segment (si el inodo necesita sincronizaci\u00f3n) nilfs_segctor_sync --\u0026gt; Intente sincronizar con el hilo del escritor de registros *** DEADLOCK *** Solucione este problema cambiando nilfs_segctor_sync() para que el hilo del escritor de registros regrese normalmente sin sincronizarse despu\u00e9s de que termine y forzando las tareas que ya est\u00e1n esperando a completarse una vez que finaliza el hilo. La eliminaci\u00f3n de metadatos del inodo omitido se procesar\u00e1 en conjunto en el trabajo de limpieza posterior en nilfs_segctor_destroy()."
}
],
"id": "CVE-2024-38582",
"lastModified": "2026-06-17T07:40:38.210",
"metrics": {
"cvssMetricV31": [
{
"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",
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"options": [
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{
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],
"role": "CISA Coordinator",
"timestamp": "2024-06-20T14:52:09.028015Z",
"version": "2.0.3"
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"published": "2024-06-19T14:15:18.273",
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}
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|---|
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