{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-40196", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.178Z", "datePublished": "2025-11-12T21:56:32.578Z", "dateUpdated": "2026-07-24T14:33:26.656Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-24T14:33:26.656Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs: quota: create dedicated workqueue for quota_release_work\n\nThere is a kernel panic due to WARN_ONCE when panic_on_warn is set.\n\nThis issue occurs when writeback is triggered due to sync call for an\nopened file(ie, writeback reason is WB_REASON_SYNC). When f2fs balance\nis needed at sync path, flush for quota_release_work is triggered.\nBy default quota_release_work is queued to \"events_unbound\" queue which\ndoes not have WQ_MEM_RECLAIM flag. During f2fs balance \"writeback\"\nworkqueue tries to flush quota_release_work causing kernel panic due to\nMEM_RECLAIM flag mismatch errors.\n\nThis patch creates dedicated workqueue with WQ_MEM_RECLAIM flag\nfor work quota_release_work.\n\n------------[ cut here ]------------\nWARNING: CPU: 4 PID: 14867 at kernel/workqueue.c:3721 check_flush_dependency+0x13c/0x148\nCall trace:\n check_flush_dependency+0x13c/0x148\n __flush_work+0xd0/0x398\n flush_delayed_work+0x44/0x5c\n dquot_writeback_dquots+0x54/0x318\n f2fs_do_quota_sync+0xb8/0x1a8\n f2fs_write_checkpoint+0x3cc/0x99c\n f2fs_gc+0x190/0x750\n f2fs_balance_fs+0x110/0x168\n f2fs_write_single_data_page+0x474/0x7dc\n f2fs_write_data_pages+0x7d0/0xd0c\n do_writepages+0xe0/0x2f4\n __writeback_single_inode+0x44/0x4ac\n writeback_sb_inodes+0x30c/0x538\n wb_writeback+0xf4/0x440\n wb_workfn+0x128/0x5d4\n process_scheduled_works+0x1c4/0x45c\n worker_thread+0x32c/0x3e8\n kthread+0x11c/0x1b0\n ret_from_fork+0x10/0x20\nKernel panic - not syncing: kernel: panic_on_warn set ..." } ], "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": "3e6ff207cd5bd924ad94cd1a7c633bcdac0ba1cb", "lessThan": "8df2eedd371a1c24ecc4283581299d7737dfcd06", "status": "affected", "versionType": "git" }, { "version": "bcacb52a985f1b6d280f698a470b873dfe52728a", "lessThan": "f846eacde280ecc3daedfe001580e3033565179e", "status": "affected", "versionType": "git" }, { "version": "8ea87e34792258825d290f4dc5216276e91cb224", "lessThan": "f12039df1515d5daf7d92e586ece5cefeb39561b", "status": "affected", "versionType": "git" }, { "version": "ac6f420291b3fee1113f21d612fa88b628afab5b", "lessThan": "8a09a62f0c8c6123c2f1864ed6d5f9eb144afaf0", "status": "affected", "versionType": "git" }, { "version": "ac6f420291b3fee1113f21d612fa88b628afab5b", "lessThan": "72b7ceca857f38a8ca7c5629feffc63769638974", "status": "affected", "versionType": "git" }, { "version": "a5abba5e0e586e258ded3e798fe5f69c66fec198", "status": "affected", "versionType": "git" }, { "version": "6f3821acd7c3143145999248087de5fb4b48cf26", "status": "affected", "versionType": "git" }, { "version": "ab6cfcf8ed2c7496f55d020b65b1d8cd55d9a2cb", "status": "affected", "versionType": "git" }, { "version": "6.1.120", "lessThan": "6.1.178", "status": "affected", "versionType": "semver" }, { "version": "6.6.64", "lessThan": "6.6.114", "status": "affected", "versionType": "semver" }, { "version": "6.12.4", "lessThan": "6.12.54", "status": "affected", "versionType": "semver" }, { "version": "5.4.287", "lessThan": "5.5", "status": "affected", "versionType": "semver" }, { "version": "5.10.231", "lessThan": "5.11", "status": "affected", "versionType": "semver" }, { "version": "5.15.174", "lessThan": "5.16", "status": "affected", "versionType": "semver" } ] }, { "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": "6.13", "status": "affected" }, { "version": "0", "lessThan": "6.13", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.114", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.54", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.17.4", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18", "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": "6.1.120", "versionEndExcluding": "6.1.178" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.64", "versionEndExcluding": "6.6.114" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.4", "versionEndExcluding": "6.12.54" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "6.17.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "6.18" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4.287" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.231" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15.174" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/8df2eedd371a1c24ecc4283581299d7737dfcd06" }, { "url": "https://git.kernel.org/stable/c/f846eacde280ecc3daedfe001580e3033565179e" }, { "url": "https://git.kernel.org/stable/c/f12039df1515d5daf7d92e586ece5cefeb39561b" }, { "url": "https://git.kernel.org/stable/c/8a09a62f0c8c6123c2f1864ed6d5f9eb144afaf0" }, { "url": "https://git.kernel.org/stable/c/72b7ceca857f38a8ca7c5629feffc63769638974" } ], "title": "fs: quota: create dedicated workqueue for quota_release_work", "x_generator": { "engine": "bippy-1.2.0" } } } }