{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2024-35892 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2024-35892 is a medium-severity vulnerability in Linux kernel, published on 19 May 2024. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2024-35892 and fix it if it is affected.\n\nWhat it is: CVE-2024-35892 is a medium-severity vulnerability in Linux kernel, published on 19 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2024-35892 in the wild and no public exploit code.\n\nAffected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2024-35892/ (Markdown: https://insights.sbomify.com/CVE-2024-35892/index.md)","id":"CVE-2024-35892","markdown":"https://insights.sbomify.com/CVE-2024-35892/index.md","name":"CVE-2024-35892","record":{"aliases":["BELL-CVE-2024-35892","DEBIAN-CVE-2024-35892","GHSA-gv5w-824r-r7xx","UBUNTU-CVE-2024-35892"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel networking","requires_auth":"low_privilege","summary":"A race condition in the Linux kernel's network scheduler can trigger a lockdep warning and potential system instability due to incorrect RCU usage.","user_interaction":"not_required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-667","name":"Improper Locking"}],"description":"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 (\u0026sch-\u003eq.lock){+.-.}-{2:2}, at: spin_lock include/linux/spinlock.h:350 [inline]\n  #1: ffff888171861108 (\u0026sch-\u003eq.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 \u003cTASK\u003e\n  [\u003cffffffff85b85f14\u003e] __dump_stack lib/dump_stack.c:88 [inline]\n  [\u003cffffffff85b85f14\u003e] dump_stack_lvl+0x1b1/0x28f lib/dump_stack.c:106\n  [\u003cffffffff85b86007\u003e] dump_stack+0x15/0x1e lib/dump_stack.c:113\n  [\u003cffffffff81802299\u003e] lockdep_rcu_suspicious+0x1b9/0x260 kernel/locking/lockdep.c:6592\n  [\u003cffffffff84f0054c\u003e] qdisc_lookup+0xac/0x6f0 net/sched/sch_api.c:305\n  [\u003cffffffff84f037c3\u003e] qdisc_tree_reduce_backlog+0x243/0x580 net/sched/sch_api.c:811\n  [\u003cffffffff84f5b78c\u003e] pfifo_tail_enqueue+0x32c/0x4b0 net/sched/sch_fifo.c:51\n  [\u003cffffffff84fbcf63\u003e] qdisc_enqueue include/net/sch_generic.h:833 [inline]\n  [\u003cffffffff84fbcf63\u003e] netem_dequeue+0xeb3/0x15d0 net/sched/sch_netem.c:723\n  [\u003cffffffff84eecab9\u003e] dequeue_skb net/sched/sch_generic.c:292 [inline]\n  [\u003cffffffff84eecab9\u003e] qdisc_restart net/sched/sch_generic.c:397 [inline]\n  [\u003cffffffff84eecab9\u003e] __qdisc_run+0x249/0x1e60 net/sched/sch_generic.c:415\n  [\u003cffffffff84d7aa96\u003e] qdisc_run+0xd6/0x260 include/net/pkt_sched.h:125\n  [\u003cffffffff84d85d29\u003e] net_tx_action+0x7c9/0x970 net/core/dev.c:5313\n  [\u003cffffffff85e002bd\u003e] __do_softirq+0x2bd/0x9bd kernel/softirq.c:616\n  [\u003cffffffff81568bca\u003e] invoke_softirq kernel/softirq.c:447 [inline]\n  [\u003cffffffff81568bca\u003e] __irq_exit_rcu+0xca/0x230 kernel/softirq.c:700\n  [\u003cffffffff81568ae9\u003e] irq_exit_rcu+0x9/0x20 kernel/softirq.c:712\n  [\u003cffffffff85b89f52\u003e] sysvec_apic_timer_interrupt+0x42/0x90 arch/x86/kernel/apic/apic.c:1107\n  [\u003cffffffff85c00ccb\u003e] asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:656","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"net/sched: fix lockdep splat in qdisc_tree_reduce_backlog()","id":"CVE-2024-35892","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"race_condition","year":"2024"},"n_packages":0,"n_references":4,"next":{"headline":"net/sched: act_skbmod: prevent kernel-infoleak","id":"CVE-2024-35893"},"packages":[],"prev":{"headline":"net: phy: micrel: Fix potential null pointer dereference","id":"CVE-2024-35891"},"products":["Linux"],"published":"2024-05-19","related":[{"cvss_score":8.8,"headline":"Linux Kernel Out-of-Bounds Write","id":"CVE-2026-53266","kev_date_added":"2026-09-18","published":"2026-06-25"},{"cvss_score":8.8,"headline":"Linux Kernel Improper Input Validation","id":"CVE-2013-6282","kev_date_added":"2022-09-15","published":"2013-11-19"},{"cvss_score":8.4,"headline":"Linux Kernel Heap-Based Buffer Overflow","id":"CVE-2022-0185","kev_date_added":"2024-08-21","published":"2022-02-11"},{"cvss_score":8.4,"headline":"Linux Kernel Privilege Escalation","id":"CVE-2013-2094","kev_date_added":"2022-09-15","published":"2013-05-14"},{"cvss_score":7.8,"headline":"Linux Kernel Unspecified","id":"CVE-2026-53362","kev_date_added":"2026-08-27","published":"2026-07-04"},{"cvss_score":7.8,"headline":"Linux Kernel Missing Initialization of a Variable","id":"CVE-2026-46300","kev_date_added":"2026-10-28","published":"2026-05-23"},{"cvss_score":7.8,"headline":"Linux Kernel Race Condition","id":"CVE-2025-39964","kev_date_added":"2026-09-18","published":"2025-10-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-23","vendors":["Linux"]},"summary":"A race condition in the Linux kernel's network scheduler can trigger a lockdep warning and potential system instability due to incorrect RCU usage.","url":"https://insights.sbomify.com/CVE-2024-35892/"}