CVE-2024-56780 (GCVE-0-2024-56780)

Vulnerability from cvelistv5 – Published: 2025-01-08 17:49 – Updated: 2026-10-15 01:00
VLAI
Title
quota: flush quota_release_work upon quota writeback
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.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/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 2025-10-01 19:56 UTC
CWE
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7056 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: d40c192e119892799dd4ddf94f5cea6fa93775ef , < a5abba5e0e586e258ded3e798fe5f69c66fec198 (git)
Affected: 86d89987f0998c98f57d641e308b40452a994045 , < 6f3821acd7c3143145999248087de5fb4b48cf26 (git)
Affected: 89602de9a2d7080b7a4029d5c1bf8f78d295ff5f , < ab6cfcf8ed2c7496f55d020b65b1d8cd55d9a2cb (git)
Affected: 3027e200dd58d5b437f16634dbbd355b29ffe0a6 , < 3e6ff207cd5bd924ad94cd1a7c633bcdac0ba1cb (git)
Affected: dabc8b20756601b9e1cc85a81d47d3f98ed4d13a , < bcacb52a985f1b6d280f698a470b873dfe52728a (git)
Affected: dabc8b20756601b9e1cc85a81d47d3f98ed4d13a , < 8ea87e34792258825d290f4dc5216276e91cb224 (git)
Affected: dabc8b20756601b9e1cc85a81d47d3f98ed4d13a , < ac6f420291b3fee1113f21d612fa88b628afab5b (git)
Affected: f3e9a2bbdeb8987508dd6bb2b701dea911d4daec (git)
Affected: 903fc5d8cb48b0d2de7095ef40e39fd32bb27bd0 (git)
Affected: 31bed65eecbc5ce57592cfe31947eaa64e3d678e (git)
Affected: 5.4.257 , < 5.4.287 (semver)
Affected: 5.10.195 , < 5.10.231 (semver)
Affected: 5.15.132 , < 5.15.174 (semver)
Affected: 6.1.53 , < 6.1.120 (semver)
Affected: 4.19.295 , < 4.20 (semver)
Affected: 6.4.16 , < 6.5 (semver)
Affected: 6.5.3 , < 6.6 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 5.4.287 , ≤ 5.4.* (semver)
Unaffected: 5.10.231 , ≤ 5.10.* (semver)
Unaffected: 5.15.174 , ≤ 5.15.* (semver)
Unaffected: 6.1.120 , ≤ 6.1.* (semver)
Unaffected: 6.6.64 , ≤ 6.6.* (semver)
Unaffected: 6.12.4 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Siemens RUGGEDCOM RST2428P Affected: 0 , < V3.2 (custom)
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Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Affected: 0 , < V3.2 (custom)
guessed Create a notification for this product.
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family Affected: 0 , < V3.2 (custom)
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            "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."
          },
          {
            "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. Para evitar esto, aseg\u00farese de vaciar la cola de trabajo durante dquot_writeback_dquots() para que no tengamos ning\u00fan elemento de trabajo pendiente despu\u00e9s del congelamiento."
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                  "status": "affected",
                  "version": "3027e200dd58d5b437f16634dbbd355b29ffe0a6",
                  "versionType": "git"
                },
                {
                  "lessThan": "bcacb52a985f1b6d280f698a470b873dfe52728a",
                  "status": "affected",
                  "version": "dabc8b20756601b9e1cc85a81d47d3f98ed4d13a",
                  "versionType": "git"
                },
                {
                  "lessThan": "8ea87e34792258825d290f4dc5216276e91cb224",
                  "status": "affected",
                  "version": "dabc8b20756601b9e1cc85a81d47d3f98ed4d13a",
                  "versionType": "git"
                },
                {
                  "lessThan": "ac6f420291b3fee1113f21d612fa88b628afab5b",
                  "status": "affected",
                  "version": "dabc8b20756601b9e1cc85a81d47d3f98ed4d13a",
                  "versionType": "git"
                },
                {
                  "status": "affected",
                  "version": "f3e9a2bbdeb8987508dd6bb2b701dea911d4daec",
                  "versionType": "git"
                },
                {
                  "status": "affected",
                  "version": "903fc5d8cb48b0d2de7095ef40e39fd32bb27bd0",
                  "versionType": "git"
                },
                {
                  "status": "affected",
                  "version": "31bed65eecbc5ce57592cfe31947eaa64e3d678e",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "fs/quota/dquot.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "6.6"
                },
                {
                  "lessThan": "6.6",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.4.*",
                  "status": "unaffected",
                  "version": "5.4.287",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.231",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.174",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.120",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.64",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.12.*",
                  "status": "unaffected",
                  "version": "6.12.4",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.13",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.4.287",
                      "versionStartIncluding": "5.4.257",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.231",
                      "versionStartIncluding": "5.10.195",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.174",
                      "versionStartIncluding": "5.15.132",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.120",
                      "versionStartIncluding": "6.1.53",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.64",
                      "versionStartIncluding": "6.6",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.12.4",
                      "versionStartIncluding": "6.6",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.13",
                      "versionStartIncluding": "6.6",
                      "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",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "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."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-11T20:58:55.699Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "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"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-56780",
        "datePublished": "2025-01-08T17:49:17.889Z",
        "dateReserved": "2024-12-29T11:26:39.768Z",
        "dateUpdated": "2026-05-11T20:58:55.699Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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