CVE-2022-50379 (GCVE-0-2022-50379)

Vulnerability from cvelistv5 – Published: 2025-09-18 13:33 – Updated: 2026-01-14 18:53
VLAI?
Title
btrfs: fix race between quota enable and quota rescan ioctl
Summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix race between quota enable and quota rescan ioctl When enabling quotas, at btrfs_quota_enable(), after committing the transaction, we change fs_info->quota_root to point to the quota root we created and set BTRFS_FS_QUOTA_ENABLED at fs_info->flags. Then we try to start the qgroup rescan worker, first by initializing it with a call to qgroup_rescan_init() - however if that fails we end up freeing the quota root but we leave fs_info->quota_root still pointing to it, this can later result in a use-after-free somewhere else. We have previously set the flags BTRFS_FS_QUOTA_ENABLED and BTRFS_QGROUP_STATUS_FLAG_ON, so we can only fail with -EINPROGRESS at btrfs_quota_enable(), which is possible if someone already called the quota rescan ioctl, and therefore started the rescan worker. So fix this by ignoring an -EINPROGRESS and asserting we can't get any other error.
Severity ?
4.7 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 5d23515be66904fa3b1b5d6bd72d2199cd2447ab , < c97f6d528c3f1c83a6b792a8a7928c236c80b8fe (git)
Affected: 5d23515be66904fa3b1b5d6bd72d2199cd2447ab , < 26b7c0ac49a3eea15559c9d84863736a6d1164b4 (git)
Affected: 5d23515be66904fa3b1b5d6bd72d2199cd2447ab , < 47b5ffe86332af95f0f52be0a63d4da7c2b37b55 (git)
Affected: 5d23515be66904fa3b1b5d6bd72d2199cd2447ab , < 4b996a3014ef014af8f97b60c35f5289210a4720 (git)
Affected: 5d23515be66904fa3b1b5d6bd72d2199cd2447ab , < 0efd9dfc00d677a1d0929319a6103cb2dfc41c22 (git)
Affected: 5d23515be66904fa3b1b5d6bd72d2199cd2447ab , < 6c22f86dd221eba0c7af645b1af73dcbc04ee27b (git)
Affected: 5d23515be66904fa3b1b5d6bd72d2199cd2447ab , < 331cd9461412e103d07595a10289de90004ac890 (git)
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    Linux Linux Affected: 4.17
Unaffected: 0 , < 4.17 (semver)
Unaffected: 4.19.262 , ≤ 4.19.* (semver)
Unaffected: 5.4.220 , ≤ 5.4.* (semver)
Unaffected: 5.10.150 , ≤ 5.10.* (semver)
Unaffected: 5.15.75 , ≤ 5.15.* (semver)
Unaffected: 5.19.17 , ≤ 5.19.* (semver)
Unaffected: 6.0.3 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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\"semver\"}, {\"version\": \"5.19.17\", \"lessThanOrEqual\": \"5.19.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"6.0.3\", \"lessThanOrEqual\": \"6.0.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"6.1\", \"lessThanOrEqual\": \"*\", \"status\": \"unaffected\", \"versionType\": \"original_commit_for_fix\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.17\", \"versionEndExcluding\": \"4.19.262\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.17\", \"versionEndExcluding\": \"5.4.220\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.17\", \"versionEndExcluding\": \"5.10.150\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.17\", \"versionEndExcluding\": \"5.15.75\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.17\", \"versionEndExcluding\": \"5.19.17\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.17\", \"versionEndExcluding\": \"6.0.3\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.17\", \"versionEndExcluding\": \"6.1\"}]}]}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/c97f6d528c3f1c83a6b792a8a7928c236c80b8fe\"}, {\"url\": \"https://git.kernel.org/stable/c/26b7c0ac49a3eea15559c9d84863736a6d1164b4\"}, {\"url\": \"https://git.kernel.org/stable/c/47b5ffe86332af95f0f52be0a63d4da7c2b37b55\"}, {\"url\": \"https://git.kernel.org/stable/c/4b996a3014ef014af8f97b60c35f5289210a4720\"}, {\"url\": \"https://git.kernel.org/stable/c/0efd9dfc00d677a1d0929319a6103cb2dfc41c22\"}, {\"url\": \"https://git.kernel.org/stable/c/6c22f86dd221eba0c7af645b1af73dcbc04ee27b\"}, {\"url\": \"https://git.kernel.org/stable/c/331cd9461412e103d07595a10289de90004ac890\"}], \"title\": \"btrfs: fix race between quota enable and quota rescan ioctl\", \"x_generator\": {\"engine\": \"bippy-1.2.0\"}}, \"adp\": [{\"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 4.7, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-50379\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-14T18:47:13.915355Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-362\", \"description\": \"CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)\"}]}], \"providerMetadata\": {\"shortName\": \"CISA-ADP\", \"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"dateUpdated\": \"2026-01-14T18:47:09.974Z\"}, \"title\": \"CISA ADP Vulnrichment\"}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-50379\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"Linux\", \"dateReserved\": \"2025-09-17T14:53:06.996Z\", \"datePublished\": \"2025-09-18T13:33:01.502Z\", \"dateUpdated\": \"2025-12-23T13:29:14.404Z\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.