{"dataType": "CVE_RECORD", "dataVersion": "5.1", "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": "2025-01-08T17:49:17.889Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-01-08T17:49:17.889Z"}, "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't 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->s_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"}]}, {"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-rc2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "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-5f407fcff5a0"}}}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "17432972-1EC7-4C0A-9A09-36F90BE8963A", "versionEndExcluding": "4.20", "versionStartIncluding": "4.19.295", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "95D33EF5-7C1B-4CC4-AA45-A372E660A8FF", "versionEndExcluding": "5.4.287", "versionStartIncluding": "5.4.257", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "22259BCA-C415-4B49-82E6-AF53F0942450", "versionEndExcluding": "5.10.231", "versionStartIncluding": "5.10.195", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "48D64CF9-6F08-4ED9-A1A0-4BB057B44945", "versionEndExcluding": "5.15.174", "versionStartIncluding": "5.15.132", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4328D19A-54C2-4D2B-BBA7-D85BE5956B7D", "versionEndExcluding": "6.1.120", "versionStartIncluding": "6.1.53", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "A5099559-2D15-42A5-A561-71B34FEFF36F", "versionEndExcluding": "6.5", "versionStartIncluding": "6.4.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "713AA9D9-DD05-4AE0-8B46-932A79D99EF8", "versionEndExcluding": "6.6.64", "versionStartIncluding": "6.5.3", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "04756810-D093-4B43-B1D9-CF5035968061", "versionEndExcluding": "6.12.4", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*", "matchCriteriaId": "62567B3C-6CEE-46D0-BC2E-B3717FBF7D13", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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't 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->s_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 carrera: 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->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."}], "id": "CVE-2024-56780", "lastModified": "2025-01-09T21:50:02.050", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-01-08T18:15:18.910", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3e6ff207cd5bd924ad94cd1a7c633bcdac0ba1cb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6f3821acd7c3143145999248087de5fb4b48cf26"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8ea87e34792258825d290f4dc5216276e91cb224"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a5abba5e0e586e258ded3e798fe5f69c66fec198"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ab6cfcf8ed2c7496f55d020b65b1d8cd55d9a2cb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ac6f420291b3fee1113f21d612fa88b628afab5b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bcacb52a985f1b6d280f698a470b873dfe52728a"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: quota: flush quota_release_work upon quota writeback", "id": "2336549", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2336549"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nquota: flush quota_release_work upon quota writeback\nOne of the paths quota writeback is called from is:\nfreeze_super()\nsync_filesystem()\next4_sync_fs()\ndquot_writeback_dquots()\nSince we currently don't always flush the quota_release_work queue in\nthis path, we can end up with the following race:\n1. dquot are added to releasing_dquots list during regular operations.\n2. FS Freeze starts, however, this does not flush the quota_release_work queue.\n3. Freeze completes.\n4. Kernel eventually tries to flush the workqueue while FS is frozen which\nhits a WARN_ON since transaction gets started during frozen state:\next4_journal_check_start+0x28/0x110 [ext4] (unreliable)\n__ext4_journal_start_sb+0x64/0x1c0 [ext4]\next4_release_dquot+0x90/0x1d0 [ext4]\nquota_release_workfn+0x43c/0x4d0\nWhich is the following line:\nWARN_ON(sb->s_writers.frozen == SB_FREEZE_COMPLETE);\nWhich ultimately results in generic/390 failing due to dmesg\nnoise. This was detected on powerpc machine 15 cores.\nTo avoid this, make sure to flush the workqueue during\ndquot_writeback_dquots() so we dont have any pending workitems after\nfreeze."], "name": "CVE-2024-56780", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-01-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-56780\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-56780\nhttps://lore.kernel.org/linux-cve-announce/2025010813-CVE-2024-56780-6b91@gregkh/T"], "threat_severity": "Low"}