CVE-2024-56780 (GCVE-0-2024-56780)
Vulnerability from cvelistv5
Published
2025-01-08 17:49
Modified
2025-10-01 19:57
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: quota: flush quota_release_work upon quota writeback One of the paths quota writeback is called from is: freeze_super() sync_filesystem() ext4_sync_fs() dquot_writeback_dquots() Since we currently don't always flush the quota_release_work queue in this path, we can end up with the following race: 1. dquot are added to releasing_dquots list during regular operations. 2. FS Freeze starts, however, this does not flush the quota_release_work queue. 3. Freeze completes. 4. Kernel eventually tries to flush the workqueue while FS is frozen which hits a WARN_ON since transaction gets started during frozen state: ext4_journal_check_start+0x28/0x110 [ext4] (unreliable) __ext4_journal_start_sb+0x64/0x1c0 [ext4] ext4_release_dquot+0x90/0x1d0 [ext4] quota_release_workfn+0x43c/0x4d0 Which is the following line: WARN_ON(sb->s_writers.frozen == SB_FREEZE_COMPLETE); Which ultimately results in generic/390 failing due to dmesg noise. This was detected on powerpc machine 15 cores. To avoid this, make sure to flush the workqueue during dquot_writeback_dquots() so we dont have any pending workitems after freeze.
References
Impacted products
Vendor Product Version
Linux Linux Version: d40c192e119892799dd4ddf94f5cea6fa93775ef
Version: 86d89987f0998c98f57d641e308b40452a994045
Version: 89602de9a2d7080b7a4029d5c1bf8f78d295ff5f
Version: 3027e200dd58d5b437f16634dbbd355b29ffe0a6
Version: dabc8b20756601b9e1cc85a81d47d3f98ed4d13a
Version: dabc8b20756601b9e1cc85a81d47d3f98ed4d13a
Version: dabc8b20756601b9e1cc85a81d47d3f98ed4d13a
Version: f3e9a2bbdeb8987508dd6bb2b701dea911d4daec
Version: 903fc5d8cb48b0d2de7095ef40e39fd32bb27bd0
Version: 31bed65eecbc5ce57592cfe31947eaa64e3d678e
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Kernel eventually tries to flush the workqueue while FS is frozen which\\n    hits a WARN_ON since transaction gets started during frozen state:\\n\\n  ext4_journal_check_start+0x28/0x110 [ext4] (unreliable)\\n  __ext4_journal_start_sb+0x64/0x1c0 [ext4]\\n  ext4_release_dquot+0x90/0x1d0 [ext4]\\n  quota_release_workfn+0x43c/0x4d0\\n\\nWhich is the following line:\\n\\n  WARN_ON(sb-\u003es_writers.frozen == SB_FREEZE_COMPLETE);\\n\\nWhich ultimately results in generic/390 failing due to dmesg\\nnoise. This was detected on powerpc machine 15 cores.\\n\\nTo avoid this, make sure to flush the workqueue during\\ndquot_writeback_dquots() so we dont have any pending workitems after\\nfreeze.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: quota: vaciar quota_release_work al reescribir la cuota Una de las rutas desde las que se llama a la reescritura de cuota es: freeze_super() sync_filesystem() ext4_sync_fs() dquot_writeback_dquots() Dado que actualmente no siempre vaciamos la cola quota_release_work en esta ruta, podemos terminar con la siguiente ejecuci\u00f3n: 1. dquot se agregan a la lista release_dquots durante las operaciones regulares. 2. FS Freeze comienza, sin embargo, esto no vac\u00eda la cola quota_release_work. 3. Freeze se completa. 4. El kernel finalmente intenta vaciar la cola de trabajo mientras FS est\u00e1 congelado, lo que genera un WARN_ON ya que la transacci\u00f3n se inicia durante el estado congelado: ext4_journal_check_start+0x28/0x110 [ext4] (no confiable) __ext4_journal_start_sb+0x64/0x1c0 [ext4] ext4_release_dquot+0x90/0x1d0 [ext4] quota_release_workfn+0x43c/0x4d0 Que es la siguiente l\u00ednea: WARN_ON(sb-\u0026gt;s_writers.frozen == SB_FREEZE_COMPLETE); Lo que finalmente da como resultado que generic/390 falle debido al ruido de dmesg. Esto se detect\u00f3 en una m\u00e1quina PowerPC de 15 n\u00facleos. 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    "vulnrichment": {
      "containers": "{\"cna\": {\"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T13:01:23.140Z\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nquota: flush quota_release_work upon quota writeback\\n\\nOne of the paths quota writeback is called from is:\\n\\nfreeze_super()\\n  sync_filesystem()\\n    ext4_sync_fs()\\n      dquot_writeback_dquots()\\n\\nSince we currently don\u0027t always flush the quota_release_work queue in\\nthis path, we can end up with the following race:\\n\\n 1. dquot are added to releasing_dquots list during regular operations.\\n 2. FS Freeze starts, however, this does not flush the quota_release_work queue.\\n 3. Freeze completes.\\n 4. Kernel eventually tries to flush the workqueue while FS is frozen which\\n    hits a WARN_ON since transaction gets started during frozen state:\\n\\n  ext4_journal_check_start+0x28/0x110 [ext4] (unreliable)\\n  __ext4_journal_start_sb+0x64/0x1c0 [ext4]\\n  ext4_release_dquot+0x90/0x1d0 [ext4]\\n  quota_release_workfn+0x43c/0x4d0\\n\\nWhich is the following line:\\n\\n  WARN_ON(sb-\u003es_writers.frozen == SB_FREEZE_COMPLETE);\\n\\nWhich ultimately results in generic/390 failing due to dmesg\\nnoise. This was detected on powerpc machine 15 cores.\\n\\nTo avoid this, make sure to flush the workqueue during\\ndquot_writeback_dquots() so we dont have any pending workitems after\\nfreeze.\"}], \"affected\": [{\"product\": \"Linux\", \"vendor\": \"Linux\", \"defaultStatus\": \"unaffected\", \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"programFiles\": [\"fs/quota/dquot.c\"], \"versions\": [{\"version\": \"d40c192e119892799dd4ddf94f5cea6fa93775ef\", \"lessThan\": \"a5abba5e0e586e258ded3e798fe5f69c66fec198\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"86d89987f0998c98f57d641e308b40452a994045\", \"lessThan\": \"6f3821acd7c3143145999248087de5fb4b48cf26\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"89602de9a2d7080b7a4029d5c1bf8f78d295ff5f\", \"lessThan\": \"ab6cfcf8ed2c7496f55d020b65b1d8cd55d9a2cb\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"3027e200dd58d5b437f16634dbbd355b29ffe0a6\", \"lessThan\": \"3e6ff207cd5bd924ad94cd1a7c633bcdac0ba1cb\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"dabc8b20756601b9e1cc85a81d47d3f98ed4d13a\", \"lessThan\": \"bcacb52a985f1b6d280f698a470b873dfe52728a\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"dabc8b20756601b9e1cc85a81d47d3f98ed4d13a\", \"lessThan\": \"8ea87e34792258825d290f4dc5216276e91cb224\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"dabc8b20756601b9e1cc85a81d47d3f98ed4d13a\", \"lessThan\": \"ac6f420291b3fee1113f21d612fa88b628afab5b\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"f3e9a2bbdeb8987508dd6bb2b701dea911d4daec\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"903fc5d8cb48b0d2de7095ef40e39fd32bb27bd0\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"31bed65eecbc5ce57592cfe31947eaa64e3d678e\", \"status\": \"affected\", \"versionType\": \"git\"}]}, {\"product\": \"Linux\", \"vendor\": \"Linux\", \"defaultStatus\": \"affected\", \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"programFiles\": [\"fs/quota/dquot.c\"], \"versions\": [{\"version\": \"6.6\", \"status\": \"affected\"}, {\"version\": \"0\", \"lessThan\": \"6.6\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"5.4.287\", \"lessThanOrEqual\": \"5.4.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"5.10.231\", \"lessThanOrEqual\": \"5.10.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"5.15.174\", \"lessThanOrEqual\": \"5.15.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"6.1.120\", \"lessThanOrEqual\": \"6.1.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"6.6.64\", \"lessThanOrEqual\": \"6.6.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"6.12.4\", \"lessThanOrEqual\": \"6.12.*\", \"status\": \"unaffected\", \"versionType\": \"semver\"}, {\"version\": \"6.13\", \"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\": \"5.4.257\", \"versionEndExcluding\": \"5.4.287\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.10.195\", \"versionEndExcluding\": \"5.10.231\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.15.132\", \"versionEndExcluding\": \"5.15.174\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.1.53\", \"versionEndExcluding\": \"6.1.120\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.6\", \"versionEndExcluding\": \"6.6.64\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.6\", \"versionEndExcluding\": \"6.12.4\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.6\", \"versionEndExcluding\": \"6.13\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.19.295\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.4.16\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.5.3\"}]}]}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/a5abba5e0e586e258ded3e798fe5f69c66fec198\"}, {\"url\": \"https://git.kernel.org/stable/c/6f3821acd7c3143145999248087de5fb4b48cf26\"}, {\"url\": \"https://git.kernel.org/stable/c/ab6cfcf8ed2c7496f55d020b65b1d8cd55d9a2cb\"}, {\"url\": \"https://git.kernel.org/stable/c/3e6ff207cd5bd924ad94cd1a7c633bcdac0ba1cb\"}, {\"url\": \"https://git.kernel.org/stable/c/bcacb52a985f1b6d280f698a470b873dfe52728a\"}, {\"url\": \"https://git.kernel.org/stable/c/8ea87e34792258825d290f4dc5216276e91cb224\"}, {\"url\": \"https://git.kernel.org/stable/c/ac6f420291b3fee1113f21d612fa88b628afab5b\"}], \"title\": \"quota: flush quota_release_work upon quota writeback\", \"x_generator\": {\"engine\": \"bippy-1.2.0\"}}, \"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-56780\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T19:56:25.354258Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"description\": \"CWE-noinfo Not enough information\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T15:51:18.226Z\"}}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-56780\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"Linux\", \"dateReserved\": \"2024-12-29T11:26:39.768Z\", \"datePublished\": \"2025-01-08T17:49:17.889Z\", \"dateUpdated\": \"2025-10-01T19:57:23.949Z\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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