| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/slab/kvfree_rcu: Switch to WQ_MEM_RECLAIM wq\n\nCurrently kvfree_rcu() APIs use a system workqueue which is\n\"system_unbound_wq\" to driver RCU machinery to reclaim a memory.\n\nRecently, it has been noted that the following kernel warning can\nbe observed:\n\n<snip>\nworkqueue: WQ_MEM_RECLAIM nvme-wq:nvme_scan_work is flushing !WQ_MEM_RECLAIM events_unbound:kfree_rcu_work\n WARNING: CPU: 21 PID: 330 at kernel/workqueue.c:3719 check_flush_dependency+0x112/0x120\n Modules linked in: intel_uncore_frequency(E) intel_uncore_frequency_common(E) skx_edac(E) ...\n CPU: 21 UID: 0 PID: 330 Comm: kworker/u144:6 Tainted: G E 6.13.2-0_g925d379822da #1\n Hardware name: Wiwynn Twin Lakes MP/Twin Lakes Passive MP, BIOS YMM20 02/01/2023\n Workqueue: nvme-wq nvme_scan_work\n RIP: 0010:check_flush_dependency+0x112/0x120\n Code: 05 9a 40 14 02 01 48 81 c6 c0 00 00 00 48 8b 50 18 48 81 c7 c0 00 00 00 48 89 f9 48 ...\n RSP: 0018:ffffc90000df7bd8 EFLAGS: 00010082\n RAX: 000000000000006a RBX: ffffffff81622390 RCX: 0000000000000027\n RDX: 00000000fffeffff RSI: 000000000057ffa8 RDI: ffff88907f960c88\n RBP: 0000000000000000 R08: ffffffff83068e50 R09: 000000000002fffd\n R10: 0000000000000004 R11: 0000000000000000 R12: ffff8881001a4400\n R13: 0000000000000000 R14: ffff88907f420fb8 R15: 0000000000000000\n FS: 0000000000000000(0000) GS:ffff88907f940000(0000) knlGS:0000000000000000\n CR2: 00007f60c3001000 CR3: 000000107d010005 CR4: 00000000007726f0\n PKRU: 55555554\n Call Trace:\n <TASK>\n ? __warn+0xa4/0x140\n ? check_flush_dependency+0x112/0x120\n ? report_bug+0xe1/0x140\n ? check_flush_dependency+0x112/0x120\n ? handle_bug+0x5e/0x90\n ? exc_invalid_op+0x16/0x40\n ? asm_exc_invalid_op+0x16/0x20\n ? timer_recalc_next_expiry+0x190/0x190\n ? check_flush_dependency+0x112/0x120\n ? check_flush_dependency+0x112/0x120\n __flush_work.llvm.1643880146586177030+0x174/0x2c0\n flush_rcu_work+0x28/0x30\n kvfree_rcu_barrier+0x12f/0x160\n kmem_cache_destroy+0x18/0x120\n bioset_exit+0x10c/0x150\n disk_release.llvm.6740012984264378178+0x61/0xd0\n device_release+0x4f/0x90\n kobject_put+0x95/0x180\n nvme_put_ns+0x23/0xc0\n nvme_remove_invalid_namespaces+0xb3/0xd0\n nvme_scan_work+0x342/0x490\n process_scheduled_works+0x1a2/0x370\n worker_thread+0x2ff/0x390\n ? pwq_release_workfn+0x1e0/0x1e0\n kthread+0xb1/0xe0\n ? __kthread_parkme+0x70/0x70\n ret_from_fork+0x30/0x40\n ? __kthread_parkme+0x70/0x70\n ret_from_fork_asm+0x11/0x20\n </TASK>\n ---[ end trace 0000000000000000 ]---\n<snip>\n\nTo address this switch to use of independent WQ_MEM_RECLAIM\nworkqueue, so the rules are not violated from workqueue framework\npoint of view.\n\nApart of that, since kvfree_rcu() does reclaim memory it is worth\nto go with WQ_MEM_RECLAIM type of wq because it is designed for\nthis purpose." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "mm/slab_common.c" |
| ], |
| "versions": [ |
| { |
| "version": "6c6c47b063b593785202be158e61fe5c827d6677", |
| "lessThan": "a74979dce9e9c61f6d797c3761020252c4d8dc63", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "6c6c47b063b593785202be158e61fe5c827d6677", |
| "lessThan": "656e35bf66a11e1adde44c4c12050086dc39f241", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "6c6c47b063b593785202be158e61fe5c827d6677", |
| "lessThan": "dfd3df31c9db752234d7d2e09bef2aeabb643ce4", |
| "status": "affected", |
| "versionType": "git" |
| } |
| ] |
| }, |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "affected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "mm/slab_common.c" |
| ], |
| "versions": [ |
| { |
| "version": "6.12", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "6.12", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.12.20", |
| "lessThanOrEqual": "6.12.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.13.8", |
| "lessThanOrEqual": "6.13.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "6.14", |
| "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": "6.12", |
| "versionEndExcluding": "6.12.20" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "6.12", |
| "versionEndExcluding": "6.13.8" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "6.12", |
| "versionEndExcluding": "6.14" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/a74979dce9e9c61f6d797c3761020252c4d8dc63" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/656e35bf66a11e1adde44c4c12050086dc39f241" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/dfd3df31c9db752234d7d2e09bef2aeabb643ce4" |
| } |
| ], |
| "title": "mm/slab/kvfree_rcu: Switch to WQ_MEM_RECLAIM wq", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2025-21983", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
