cve-2021-47088
Vulnerability from cvelistv5
Published
2024-03-04 18:10
Modified
2024-11-04 11:59
Severity ?
EPSS score ?
Summary
mm/damon/dbgfs: protect targets destructions with kdamond_lock
References
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"url": "https://git.kernel.org/stable/c/34796417964b8d0aef45a99cf6c2d20cebe33733"
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"id": "CVE-2021-47088",
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"timestamp": "2024-09-10T15:56:11.291300Z",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/dbgfs: protect targets destructions with kdamond_lock\n\nDAMON debugfs interface iterates current monitoring targets in\n\u0027dbgfs_target_ids_read()\u0027 while holding the corresponding\n\u0027kdamond_lock\u0027. However, it also destructs the monitoring targets in\n\u0027dbgfs_before_terminate()\u0027 without holding the lock. This can result in\na use_after_free bug. This commit avoids the race by protecting the\ndestruction with the corresponding \u0027kdamond_lock\u0027."
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"title": "mm/damon/dbgfs: protect targets destructions with kdamond_lock",
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"datePublished": "2024-03-04T18:10:26.511Z",
"dateReserved": "2024-02-29T22:33:44.299Z",
"dateUpdated": "2024-11-04T11:59:10.376Z",
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"nvd": "{\"cve\":{\"id\":\"CVE-2021-47088\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-03-04T18:15:07.510\",\"lastModified\":\"2024-03-05T13:41:01.900\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmm/damon/dbgfs: protect targets destructions with kdamond_lock\\n\\nDAMON debugfs interface iterates current monitoring targets in\\n\u0027dbgfs_target_ids_read()\u0027 while holding the corresponding\\n\u0027kdamond_lock\u0027. However, it also destructs the monitoring targets in\\n\u0027dbgfs_before_terminate()\u0027 without holding the lock. This can result in\\na use_after_free bug. This commit avoids the race by protecting the\\ndestruction with the corresponding \u0027kdamond_lock\u0027.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm/damon/dbgfs: protege las destrucciones de objetivos con kdamond_lock La interfaz DAMON debugfs itera los objetivos de monitoreo actuales en \u0027dbgfs_target_ids_read()\u0027 mientras mantiene el correspondiente \u0027kdamond_lock\u0027. Sin embargo, tambi\u00e9n destruye los objetivos de monitoreo en \u0027dbgfs_before_terminate()\u0027 sin mantener el bloqueo. Esto puede provocar un error use_after_free. Este compromiso evita la ejecuci\u00f3n protegiendo la destrucci\u00f3n con el correspondiente \u0027kdamond_lock\u0027.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/330c6117a82c16a9a365a51cec5c9ab30b13245c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/34796417964b8d0aef45a99cf6c2d20cebe33733\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.