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EUVD-2026-312937

European Vulnerability Database identifier assigned by ENISA

Reserved

2026-10-02 07:25

Assigner

ENISA

Alias of

a CVE record, shown under related vulnerabilities. This identifier carries no description, severity or references of its own: they belong to that CVE.

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{
  "assigner": "ENISA",
  "date_reserved": "2026-10-02T07:25:42.836113+00:00",
  "id": "EUVD-2026-312937"
}

CVE-2024-40904 (GCVE-0-2024-40904)

Vulnerability from cvelistv5 – Published: 2024-07-12 12:20 – Updated: 2026-05-11 20:22

Title

USB: class: cdc-wdm: Fix CPU lockup caused by excessive log messages

Summary

In the Linux kernel, the following vulnerability has been resolved: USB: class: cdc-wdm: Fix CPU lockup caused by excessive log messages The syzbot fuzzer found that the interrupt-URB completion callback in the cdc-wdm driver was taking too long, and the driver's immediate resubmission of interrupt URBs with -EPROTO status combined with the dummy-hcd emulation to cause a CPU lockup: cdc_wdm 1-1:1.0: nonzero urb status received: -71 cdc_wdm 1-1:1.0: wdm_int_callback - 0 bytes watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor782:6625] CPU#0 Utilization every 4s during lockup: #1: 98% system, 0% softirq, 3% hardirq, 0% idle #2: 98% system, 0% softirq, 3% hardirq, 0% idle #3: 98% system, 0% softirq, 3% hardirq, 0% idle #4: 98% system, 0% softirq, 3% hardirq, 0% idle #5: 98% system, 1% softirq, 3% hardirq, 0% idle Modules linked in: irq event stamp: 73096 hardirqs last enabled at (73095): [<ffff80008037bc00>] console_emit_next_record kernel/printk/printk.c:2935 [inline] hardirqs last enabled at (73095): [<ffff80008037bc00>] console_flush_all+0x650/0xb74 kernel/printk/printk.c:2994 hardirqs last disabled at (73096): [<ffff80008af10b00>] __el1_irq arch/arm64/kernel/entry-common.c:533 [inline] hardirqs last disabled at (73096): [<ffff80008af10b00>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:551 softirqs last enabled at (73048): [<ffff8000801ea530>] softirq_handle_end kernel/softirq.c:400 [inline] softirqs last enabled at (73048): [<ffff8000801ea530>] handle_softirqs+0xa60/0xc34 kernel/softirq.c:582 softirqs last disabled at (73043): [<ffff800080020de8>] __do_softirq+0x14/0x20 kernel/softirq.c:588 CPU: 0 PID: 6625 Comm: syz-executor782 Tainted: G W 6.10.0-rc2-syzkaller-g8867bbd4a056 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Testing showed that the problem did not occur if the two error messages -- the first two lines above -- were removed; apparently adding material to the kernel log takes a surprisingly large amount of time. In any case, the best approach for preventing these lockups and to avoid spamming the log with thousands of error messages per second is to ratelimit the two dev_err() calls. Therefore we replace them with dev_err_ratelimited().

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 17:06 UTC

Assigner

Linux mitre root Scorecard

References

9 references

URL	Tags
https://git.kernel.org/stable/c/217d1f44fff560b39…
https://git.kernel.org/stable/c/05b2cd6d33f700597…
https://git.kernel.org/stable/c/c0747d76eb05542b5…
https://git.kernel.org/stable/c/53250b54c92fe087f…
https://git.kernel.org/stable/c/02a4c0499fc3a02e9…
https://git.kernel.org/stable/c/72a3fe36cf9f0d030…
https://git.kernel.org/stable/c/82075aff7ffccb1e7…
https://git.kernel.org/stable/c/22f00812862564b31…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 9908a32e94de2141463e104c9924279ed3509447 , < 217d1f44fff560b3995a685a60aa66e55a7f0f56 (git) Affected: 9908a32e94de2141463e104c9924279ed3509447 , < 05b2cd6d33f700597e6f081b53c668a226a96d28 (git) Affected: 9908a32e94de2141463e104c9924279ed3509447 , < c0747d76eb05542b5d49f67069b64ef5ff732c6c (git) Affected: 9908a32e94de2141463e104c9924279ed3509447 , < 53250b54c92fe087fd4b0c48f85529efe1ebd879 (git) Affected: 9908a32e94de2141463e104c9924279ed3509447 , < 02a4c0499fc3a02e992b4c69a9809912af372d94 (git) Affected: 9908a32e94de2141463e104c9924279ed3509447 , < 72a3fe36cf9f0d030865e571f45a40f9c1e07e8a (git) Affected: 9908a32e94de2141463e104c9924279ed3509447 , < 82075aff7ffccb1e72b0ac8aa349e473624d857c (git) Affected: 9908a32e94de2141463e104c9924279ed3509447 , < 22f00812862564b314784167a89f27b444f82a46 (git)
Linux	Linux	Affected: 2.6.28 Unaffected: 0 , < 2.6.28 (semver) Unaffected: 4.19.317 , ≤ 4.19.* (semver) Unaffected: 5.4.279 , ≤ 5.4.* (semver) Unaffected: 5.10.221 , ≤ 5.10.* (semver) Unaffected: 5.15.162 , ≤ 5.15.* (semver) Unaffected: 6.1.95 , ≤ 6.1.* (semver) Unaffected: 6.6.35 , ≤ 6.6.* (semver) Unaffected: 6.9.6 , ≤ 6.9.* (semver) Unaffected: 6.10 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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          "value": "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\u0027s 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()."
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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EUVD-2026-312937

CVE-2024-40904 (GCVE-0-2024-40904)

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Nomenclature

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