{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2024-56780", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-56780", "idYear": 2024, "status": "PUBLISHED", "publishedAt": "2025-01-08T17:49:17.889Z", "updatedAt": "2026-10-15T01:00:38.732Z", "importedAt": "2026-10-24T01:57:20.494Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "quota: flush quota_release_work upon quota writeback", "summary": "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": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "d40c192e119892799dd4ddf94f5cea6fa93775ef", "status": "affected", "versionType": "git", "lessThan": "a5abba5e0e586e258ded3e798fe5f69c66fec198" }, { "version": "86d89987f0998c98f57d641e308b40452a994045", "status": "affected", "versionType": "git", "lessThan": "6f3821acd7c3143145999248087de5fb4b48cf26" }, { "version": "89602de9a2d7080b7a4029d5c1bf8f78d295ff5f", "status": "affected", "versionType": "git", "lessThan": "ab6cfcf8ed2c7496f55d020b65b1d8cd55d9a2cb" }, { "version": "3027e200dd58d5b437f16634dbbd355b29ffe0a6", "status": "affected", "versionType": "git", "lessThan": "3e6ff207cd5bd924ad94cd1a7c633bcdac0ba1cb" }, { "version": "dabc8b20756601b9e1cc85a81d47d3f98ed4d13a", "status": "affected", "versionType": "git", "lessThan": "bcacb52a985f1b6d280f698a470b873dfe52728a" }, { "version": "dabc8b20756601b9e1cc85a81d47d3f98ed4d13a", "status": "affected", "versionType": "git", "lessThan": "8ea87e34792258825d290f4dc5216276e91cb224" }, { "version": "dabc8b20756601b9e1cc85a81d47d3f98ed4d13a", "status": "affected", "versionType": "git", "lessThan": "ac6f420291b3fee1113f21d612fa88b628afab5b" }, { "version": "f3e9a2bbdeb8987508dd6bb2b701dea911d4daec", "status": "affected", "versionType": "git" }, { "version": "903fc5d8cb48b0d2de7095ef40e39fd32bb27bd0", "status": "affected", "versionType": "git" }, { "version": "31bed65eecbc5ce57592cfe31947eaa64e3d678e", "status": "affected", "versionType": "git" }, { "version": "5.4.257", "status": "affected", "versionType": "semver", "lessThan": "5.4.287" }, { "version": "5.10.195", "status": "affected", "versionType": "semver", "lessThan": "5.10.231" }, { "version": "5.15.132", "status": "affected", "versionType": "semver", "lessThan": "5.15.174" }, { "version": "6.1.53", "status": "affected", "versionType": "semver", "lessThan": "6.1.120" }, { "version": "4.19.295", "status": "affected", "versionType": "semver", "lessThan": "4.20" }, { "version": "6.4.16", "status": "affected", "versionType": "semver", "lessThan": "6.5" }, { "version": "6.5.3", "status": "affected", "versionType": "semver", "lessThan": "6.6" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "6.6", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "6.6" }, { "version": "5.4.287", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.231", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.174", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.120", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.64", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.4", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.13", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }