{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2024-40904 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2024-40904 is a medium-severity denial of service vulnerability in Linux kernel, published on 12 Jul 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-2024-40904 and fix it if it is affected.\n\nWhat it is: CVE-2024-40904 is a medium-severity denial of service vulnerability in Linux kernel, published on 12 Jul 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-2024-40904 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-2024-40904/ (Markdown: https://insights.sbomify.com/CVE-2024-40904/index.md)","id":"CVE-2024-40904","markdown":"https://insights.sbomify.com/CVE-2024-40904/index.md","name":"CVE-2024-40904","record":{"aliases":["BELL-CVE-2024-40904","DEBIAN-CVE-2024-40904","GHSA-jjjh-v5hm-j72m","UBUNTU-CVE-2024-40904"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel USB driver","requires_auth":"low_privilege","summary":"A local attacker can cause a CPU lockup and system hang in the Linux kernel by triggering excessive log messages in the cdc-wdm USB driver.","user_interaction":"not_required","vuln_class":"denial_of_service"},"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":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: class: cdc-wdm: Fix CPU lockup caused by excessive log messages\n\nThe syzbot fuzzer found that the interrupt-URB completion callback in\nthe cdc-wdm driver was taking too long, and the driver's immediate\nresubmission of interrupt URBs with -EPROTO status combined with the\ndummy-hcd emulation to cause a CPU lockup:\n\ncdc_wdm 1-1:1.0: nonzero urb status received: -71\ncdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes\nwatchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor782:6625]\nCPU#0 Utilization every 4s during lockup:\n\t#1:  98% system,\t  0% softirq,\t  3% hardirq,\t  0% idle\n\t#2:  98% system,\t  0% softirq,\t  3% hardirq,\t  0% idle\n\t#3:  98% system,\t  0% softirq,\t  3% hardirq,\t  0% idle\n\t#4:  98% system,\t  0% softirq,\t  3% hardirq,\t  0% idle\n\t#5:  98% system,\t  1% softirq,\t  3% hardirq,\t  0% idle\nModules linked in:\nirq event stamp: 73096\nhardirqs last  enabled at (73095): [\u003cffff80008037bc00\u003e] console_emit_next_record kernel/printk/printk.c:2935 [inline]\nhardirqs last  enabled at (73095): [\u003cffff80008037bc00\u003e] console_flush_all+0x650/0xb74 kernel/printk/printk.c:2994\nhardirqs last disabled at (73096): [\u003cffff80008af10b00\u003e] __el1_irq arch/arm64/kernel/entry-common.c:533 [inline]\nhardirqs last disabled at (73096): [\u003cffff80008af10b00\u003e] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:551\nsoftirqs last  enabled at (73048): [\u003cffff8000801ea530\u003e] softirq_handle_end kernel/softirq.c:400 [inline]\nsoftirqs last  enabled at (73048): [\u003cffff8000801ea530\u003e] handle_softirqs+0xa60/0xc34 kernel/softirq.c:582\nsoftirqs last disabled at (73043): [\u003cffff800080020de8\u003e] __do_softirq+0x14/0x20 kernel/softirq.c:588\nCPU: 0 PID: 6625 Comm: syz-executor782 Tainted: G        W          6.10.0-rc2-syzkaller-g8867bbd4a056 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024\n\nTesting showed that the problem did not occur if the two error\nmessages -- the first two lines above -- were removed; apparently adding\nmaterial to the kernel log takes a surprisingly large amount of time.\n\nIn any case, the best approach for preventing these lockups and to\navoid spamming the log with thousands of error messages per second is\nto ratelimit the two dev_err() calls.  Therefore we replace them with\ndev_err_ratelimited().","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":"USB: class: cdc-wdm: Fix CPU lockup caused by excessive log messages","id":"CVE-2024-40904","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"denial_of_service","year":"2024"},"n_packages":0,"n_references":8,"next":{"headline":"ipv6: fix possible race in __fib6_drop_pcpu_from()","id":"CVE-2024-40905"},"packages":[],"prev":{"headline":"usb: typec: tcpm: fix use-after-free case in tcpm_register_source_caps","id":"CVE-2024-40903"},"products":["Linux"],"published":"2024-07-12","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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A local attacker can cause a CPU lockup and system hang in the Linux kernel by triggering excessive log messages in the cdc-wdm USB driver.","url":"https://insights.sbomify.com/CVE-2024-40904/"}