github - ghsa-3f3q-cv7c-w6c7

ghsa-3f3q-cv7c-w6c7

Vulnerability from github

Published

2024-03-04 18:30

Modified

2024-03-04 18:30

Details

In the Linux kernel, the following vulnerability has been resolved:

mm/damon/dbgfs: protect targets destructions with kdamond_lock

DAMON debugfs interface iterates current monitoring targets in 'dbgfs_target_ids_read()' while holding the corresponding 'kdamond_lock'. However, it also destructs the monitoring targets in 'dbgfs_before_terminate()' without holding the lock. This can result in a use_after_free bug. This commit avoids the race by protecting the destruction with the corresponding 'kdamond_lock'.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47088"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-03-04T18:15:07Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-3f3q-cv7c-w6c7",
  "modified": "2024-03-04T18:30:37Z",
  "published": "2024-03-04T18:30:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47088"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/330c6117a82c16a9a365a51cec5c9ab30b13245c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/34796417964b8d0aef45a99cf6c2d20cebe33733"
    }
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  "schema_version": "1.4.0",
  "severity": []
}

cve-2021-47088

Vulnerability from cvelistv5

Published

2024-03-04 18:10

Modified

2024-12-19 07:34

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: mm/damon/dbgfs: protect targets destructions with kdamond_lock DAMON debugfs interface iterates current monitoring targets in 'dbgfs_target_ids_read()' while holding the corresponding 'kdamond_lock'. However, it also destructs the monitoring targets in 'dbgfs_before_terminate()' without holding the lock. This can result in a use_after_free bug. This commit avoids the race by protecting the destruction with the corresponding 'kdamond_lock'.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/330c6117a82c16a9a365a51cec5c9ab30b13245c
	https://git.kernel.org/stable/c/34796417964b8d0aef45a99cf6c2d20cebe33733

Impacted products

Vendor

Product

Version

▼

Linux

Version: 4bc05954d0076655cfaf6f0135585bdc20cd6b11
Version: 4bc05954d0076655cfaf6f0135585bdc20cd6b11

Linux

Version: 5.15

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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.

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