{ "dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": { "cveId": "CVE-2024-35892", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-17T13:50:33.113Z", "datePublished": "2024-05-19T08:34:47.914Z", "dateUpdated": "2024-08-02T03:21:48.741Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-05-29T05:30:48.746Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: fix lockdep splat in qdisc_tree_reduce_backlog()\n\nqdisc_tree_reduce_backlog() is called with the qdisc lock held,\nnot RTNL.\n\nWe must use qdisc_lookup_rcu() instead of qdisc_lookup()\n\nsyzbot reported:\n\nWARNING: suspicious RCU usage\n6.1.74-syzkaller #0 Not tainted\n-----------------------------\nnet/sched/sch_api.c:305 suspicious rcu_dereference_protected() usage!\n\nother info that might help us debug this:\n\nrcu_scheduler_active = 2, debug_locks = 1\n3 locks held by udevd/1142:\n #0: ffffffff87c729a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:306 [inline]\n #0: ffffffff87c729a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]\n #0: ffffffff87c729a0 (rcu_read_lock){....}-{1:2}, at: net_tx_action+0x64a/0x970 net/core/dev.c:5282\n #1: ffff888171861108 (&sch->q.lock){+.-.}-{2:2}, at: spin_lock include/linux/spinlock.h:350 [inline]\n #1: ffff888171861108 (&sch->q.lock){+.-.}-{2:2}, at: net_tx_action+0x754/0x970 net/core/dev.c:5297\n #2: ffffffff87c729a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:306 [inline]\n #2: ffffffff87c729a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]\n #2: ffffffff87c729a0 (rcu_read_lock){....}-{1:2}, at: qdisc_tree_reduce_backlog+0x84/0x580 net/sched/sch_api.c:792\n\nstack backtrace:\nCPU: 1 PID: 1142 Comm: udevd Not tainted 6.1.74-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024\nCall Trace:\n \n [] __dump_stack lib/dump_stack.c:88 [inline]\n [] dump_stack_lvl+0x1b1/0x28f lib/dump_stack.c:106\n [] dump_stack+0x15/0x1e lib/dump_stack.c:113\n [] lockdep_rcu_suspicious+0x1b9/0x260 kernel/locking/lockdep.c:6592\n [] qdisc_lookup+0xac/0x6f0 net/sched/sch_api.c:305\n [] qdisc_tree_reduce_backlog+0x243/0x580 net/sched/sch_api.c:811\n [] pfifo_tail_enqueue+0x32c/0x4b0 net/sched/sch_fifo.c:51\n [] qdisc_enqueue include/net/sch_generic.h:833 [inline]\n [] netem_dequeue+0xeb3/0x15d0 net/sched/sch_netem.c:723\n [] dequeue_skb net/sched/sch_generic.c:292 [inline]\n [] qdisc_restart net/sched/sch_generic.c:397 [inline]\n [] __qdisc_run+0x249/0x1e60 net/sched/sch_generic.c:415\n [] qdisc_run+0xd6/0x260 include/net/pkt_sched.h:125\n [] net_tx_action+0x7c9/0x970 net/core/dev.c:5313\n [] __do_softirq+0x2bd/0x9bd kernel/softirq.c:616\n [] invoke_softirq kernel/softirq.c:447 [inline]\n [] __irq_exit_rcu+0xca/0x230 kernel/softirq.c:700\n [] irq_exit_rcu+0x9/0x20 kernel/softirq.c:712\n [] sysvec_apic_timer_interrupt+0x42/0x90 arch/x86/kernel/apic/apic.c:1107\n [] asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:656" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/sched/sch_api.c" ], "versions": [ { "version": "9d9a38b5639f", "lessThan": "b7d1ce2cc719", "status": "affected", "versionType": "git" }, { "version": "d636fc5dd692", "lessThan": "c040b99461a5", "status": "affected", "versionType": "git" }, { "version": "d636fc5dd692", "lessThan": "07696415526b", "status": "affected", "versionType": "git" }, { "version": "d636fc5dd692", "lessThan": "7eb322360b02", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/sched/sch_api.c" ], "versions": [ { "version": "6.4", "status": "affected" }, { "version": "0", "lessThan": "6.4", "status": "unaffected", "versionType": "custom" }, { "version": "6.1.85", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.26", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.8.5", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.9", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/b7d1ce2cc7192e8a037faa3f5d3ba72c25976460" }, { "url": "https://git.kernel.org/stable/c/c040b99461a5bfc14c2d0cbb1780fcc3a4706c7e" }, { "url": "https://git.kernel.org/stable/c/07696415526bee0607e495017369c7303a4792e1" }, { "url": "https://git.kernel.org/stable/c/7eb322360b0266481e560d1807ee79e0cef5742b" } ], "title": "net/sched: fix lockdep splat in qdisc_tree_reduce_backlog()", "x_generator": { "engine": "bippy-a5840b7849dd" } }, "adp": [ { "title": "CISA ADP Vulnrichment", "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-35892", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-05-23T19:36:07.702598Z" } } } ], "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:34:22.702Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T03:21:48.741Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/b7d1ce2cc7192e8a037faa3f5d3ba72c25976460", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/c040b99461a5bfc14c2d0cbb1780fcc3a4706c7e", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/07696415526bee0607e495017369c7303a4792e1", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/7eb322360b0266481e560d1807ee79e0cef5742b", "tags": [ "x_transferred" ] } ] } ] } }