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

Vulnerability from cvelistv5 – Published: 2025-09-18 13:33 – Updated: 2026-05-11 19:18
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
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-14 18:47 UTC
CWE
  • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
Impacted products
Vendor Product Version CPE status
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)
guessed Create a notification for this product.
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)
guessed Create a notification for this product.
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-30T10:37:29+00:00",
      "cve": "CVE-2022-50379",
      "id": "CVE-2022-50379",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "28",
      "product_status:known_not_affected": "246",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Linux kernel (btrfs): Use-after-free vulnerability leads to Denial of Service",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50379.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-31T01:24:12Z",
      "cve": "CVE-2022-50379",
      "id": "CVE-2022-50379",
      "initial_release_date": "2025-09-18T23:43:32Z",
      "product_status:known_affected": "419",
      "product_status:known_not_affected": "359",
      "product_status:recommended": "206",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50379",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50379.json",
      "version": "37"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"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\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-01-14T18:47:09.974Z\"}}], \"cna\": {\"title\": \"btrfs: fix race between quota enable and quota rescan ioctl\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5d23515be66904fa3b1b5d6bd72d2199cd2447ab\", \"lessThan\": \"c97f6d528c3f1c83a6b792a8a7928c236c80b8fe\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5d23515be66904fa3b1b5d6bd72d2199cd2447ab\", \"lessThan\": \"26b7c0ac49a3eea15559c9d84863736a6d1164b4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5d23515be66904fa3b1b5d6bd72d2199cd2447ab\", \"lessThan\": \"47b5ffe86332af95f0f52be0a63d4da7c2b37b55\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5d23515be66904fa3b1b5d6bd72d2199cd2447ab\", \"lessThan\": \"4b996a3014ef014af8f97b60c35f5289210a4720\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5d23515be66904fa3b1b5d6bd72d2199cd2447ab\", \"lessThan\": \"0efd9dfc00d677a1d0929319a6103cb2dfc41c22\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5d23515be66904fa3b1b5d6bd72d2199cd2447ab\", \"lessThan\": \"6c22f86dd221eba0c7af645b1af73dcbc04ee27b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5d23515be66904fa3b1b5d6bd72d2199cd2447ab\", \"lessThan\": \"331cd9461412e103d07595a10289de90004ac890\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/btrfs/qgroup.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.17\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.17\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.19.262\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.220\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.150\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.75\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.19.17\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.19.*\"}, {\"status\": \"unaffected\", \"version\": \"6.0.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.0.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/btrfs/qgroup.c\"], \"defaultStatus\": \"affected\"}], \"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\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbtrfs: fix race between quota enable and quota rescan ioctl\\n\\nWhen enabling quotas, at btrfs_quota_enable(), after committing the\\ntransaction, we change fs_info-\u003equota_root to point to the quota root we\\ncreated and set BTRFS_FS_QUOTA_ENABLED at fs_info-\u003eflags. Then we try\\nto start the qgroup rescan worker, first by initializing it with a call\\nto qgroup_rescan_init() - however if that fails we end up freeing the\\nquota root but we leave fs_info-\u003equota_root still pointing to it, this\\ncan later result in a use-after-free somewhere else.\\n\\nWe have previously set the flags BTRFS_FS_QUOTA_ENABLED and\\nBTRFS_QGROUP_STATUS_FLAG_ON, so we can only fail with -EINPROGRESS at\\nbtrfs_quota_enable(), which is possible if someone already called the\\nquota rescan ioctl, and therefore started the rescan worker.\\n\\nSo fix this by ignoring an -EINPROGRESS and asserting we can\u0027t get any\\nother error.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.262\", \"versionStartIncluding\": \"4.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.220\", \"versionStartIncluding\": \"4.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.150\", \"versionStartIncluding\": \"4.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.75\", \"versionStartIncluding\": \"4.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.19.17\", \"versionStartIncluding\": \"4.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.0.3\", \"versionStartIncluding\": \"4.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1\", \"versionStartIncluding\": \"4.17\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T19:18:23.937Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-50379\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T19:18:23.937Z\", \"dateReserved\": \"2025-09-17T14:53:06.996Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-09-18T13:33:01.502Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.