CVE-2025-40164

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2025-11-12. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

usbnet: Fix using smp_processor_id() in preemptible code warnings

Syzbot reported the following warning:

BUG: using smp_processor_id() in preemptible [00000000] code: dhcpcd/2879 caller is usbnet_skb_return+0x74/0x490 drivers/net/usb/usbnet.c:331 CPU: 1 UID: 0 PID: 2879 Comm: dhcpcd Not tainted 6.15.0-rc4-syzkaller-00098-g615dca38c2ea #0 PREEMPT(voluntary) Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120 check_preemption_disabled+0xd0/0xe0 lib/smp_processor_id.c:49 usbnet_skb_return+0x74/0x490 drivers/net/usb/usbnet.c:331 usbnet_resume_rx+0x4b/0x170 drivers/net/usb/usbnet.c:708 usbnet_change_mtu+0x1be/0x220 drivers/net/usb/usbnet.c:417 __dev_set_mtu net/core/dev.c:9443 [inline] netif_set_mtu_ext+0x369/0x5c0 net/core/dev.c:9496 netif_set_mtu+0xb0/0x160 net/core/dev.c:9520 dev_set_mtu+0xae/0x170 net/core/dev_api.c:247 dev_ifsioc+0xa31/0x18d0 net/core/dev_ioctl.c:572 dev_ioctl+0x223/0x10e0 net/core/dev_ioctl.c:821 sock_do_ioctl+0x19d/0x280 net/socket.c:1204 sock_ioctl+0x42f/0x6a0 net/socket.c:1311 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl fs/ioctl.c:892 [inline] __x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f

For historical and portability reasons, the netif_rx() is usually run in the softirq or interrupt context, this commit therefore add local_bh_disable/enable() protection in the usbnet_resume_rx().

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
25(Track)
EG Risk 25/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity55% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
8%
KEV
Not listed

Published

November 12, 2025

Last Modified

June 19, 2026

Advisory Details (7)

Auto-updated Jun 19, 2026
No patch confirmed yet.
generic

usbnet: Fix using smp_processor_id() in preemptible code warnings - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f45fffae5e2549bd0a4670cc52a15ad54c9f121e
generic

usbnet: Fix using smp_processor_id() in preemptible code warnings - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d1944bab8e0c1511f0cbf364aa06547735bb0ddb
generic

usbnet: Fix using smp_processor_id() in preemptible code warnings - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6635e52bc4165793aefd686962d912d73d323afe
generic

usbnet: Fix using smp_processor_id() in preemptible code warnings - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/65d04291adf7c59338f87aab9c6fe0bfa9993e64
generic

usbnet: Fix using smp_processor_id() in preemptible code warnings - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/327cd4b68b4398b6c24f10eb2b2533ffbfc10185
generic

usbnet: Fix using smp_processor_id() in preemptible code warnings - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/17fbad93879e87a334062882b45fa727ba1b3dd7
generic

usbnet: Fix using smp_processor_id() in preemptible code warnings - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0134c7bff14bd50314a4f92b182850ddfc38e255

Vendor Advisories for CVE-2025-40164(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(31)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-gcp-64k-6.17 (6.17.0-1007.7) @ questing2026-05-29ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.17.0-14.14) @ questing2026-05-29ubuntu
ubuntulinux-tools-oracle-64k-6.17 (6.17.0-1007.7) @ questing2026-05-29ubuntu
ubuntulinux-tools-oem-6.17 (6.17.0-1011.11) @ noble2026-05-29ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1057.57~20.04.1) @ focal2026-05-29ubuntu
ubuntulinux-tools-azure-6.17 (6.17.0-1008.8) @ questing2026-05-29ubuntu
ubuntulinux-virtual-6.8 (6.8.0-110.110) @ noble2026-05-29ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.176.161) @ jammy2026-05-29ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1054.57+fips1) @ noble2026-05-29ubuntu
ubuntulinux-tools-nvidia-64k-6.8 (6.8.0-1051.54) @ noble2026-05-29ubuntu
ubuntulinux-tools-realtime-6.8.1 (6.8.1-1047.48) @ noble2026-05-29ubuntu
ubuntulinux-tools-gcp-fips-5.15 (5.15.0.1105.95) @ jammy2026-05-29ubuntu
ubuntulinux-tools-realtime-5.15 (5.15.0.1104.108) @ jammy2026-05-29ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1057.57) @ jammy2026-05-29ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.176.186~20.04.1) @ focal2026-05-29ubuntu
ubuntulinux-tools-raspi-6.8 (6.8.0-1052.56) @ noble2026-05-29ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1049.50~22.04.1) @ jammy2026-05-29ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2042.43) @ noble2026-05-29ubuntu
ubuntulinux-tools-kvm-5.15 (5.15.0.1097.93) @ jammy2026-05-29ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1051.54.1) @ noble2026-05-29ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1054.60) @ noble2026-05-29ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1054.60+fips1) @ noble2026-05-29ubuntu
ubuntulinux-tools-ibm-5.15 (5.15.0.1099.95) @ jammy2026-05-29ubuntu
ubuntulinux-tools-gcp-edge (6.8.0-1054.57~22.04.1) @ jammy2026-05-29ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1110.95) @ jammy2026-05-29ubuntu
ubuntulinux-tools-azure-edge (5.15.0.1110.119~20.04.1) @ focal2026-05-29ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1099.97) @ jammy2026-05-29ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1029.30) @ noble2026-05-29ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1106.115~20.04.1) @ focal2026-05-29ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1022.22) @ noble2026-05-29ubuntu
linuxKernel @ 5.10.259—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Additional Vendor Advisories

(24)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 5× in last 7d / 38× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-01 04:15 UTCEPSS rescore
  2. 2026-07-30 16:27 UTCEPSS rescore
  3. 2026-07-30 01:29 UTCEPSS rescore
  4. 2026-07-28 15:35 UTCEPSS rescore
  5. 2026-07-26 14:54 UTCEPSS rescore
  6. 2026-07-25 14:17 UTCEPSS rescore
  7. 2026-07-25 14:17 UTCEPSS rescore
  8. 2026-07-24 14:17 UTCEPSS rescore
  9. 2026-07-23 15:11 UTCOSV refresh
  10. 2026-07-23 02:55 UTCEG score recompute
  11. 2026-07-22 14:07 UTCEPSS rescore
  12. 2026-07-22 14:07 UTCEPSS rescore
  13. 2026-07-20 17:07 UTCEPSS rescore
  14. 2026-07-19 14:30 UTCEPSS rescore
  15. 2026-07-19 14:30 UTCEPSS rescore
  16. 2026-07-19 02:28 UTCEPSS rescore
  17. 2026-07-19 02:28 UTCEPSS rescore
  18. 2026-07-18 10:04 UTCEPSS rescore
  19. 2026-07-18 10:04 UTCEPSS rescore
  20. 2026-07-16 17:02 UTCEPSS rescore
  21. 2026-07-15 16:57 UTCEPSS rescore
  22. 2026-07-15 16:57 UTCEPSS rescore
  23. 2026-07-15 01:59 UTCEPSS rescore
  24. 2026-07-15 01:59 UTCEPSS rescore
  25. 2026-07-13 22:29 UTCEPSS rescore
Show 73 more
  1. 2026-07-13 22:29 UTCEPSS rescore
  2. 2026-07-13 06:12 UTCEPSS rescore
  3. 2026-07-12 05:46 UTCEPSS rescore
  4. 2026-07-11 08:27 UTCEPSS rescore
  5. 2026-07-11 08:27 UTCEPSS rescore
  6. 2026-07-09 19:09 UTCEPSS rescore
  7. 2026-07-09 19:09 UTCEPSS rescore
  8. 2026-07-07 13:45 UTCEPSS rescore
  9. 2026-07-06 16:27 UTCEPSS rescore
  10. 2026-07-06 16:27 UTCEPSS rescore
  11. 2026-07-06 10:11 UTCOSV refresh
  12. 2026-07-05 02:30 UTCEPSS rescore
  13. 2026-07-04 06:30 UTCEPSS rescore
  14. 2026-07-01 15:06 UTCEPSS rescore
  15. 2026-07-01 15:06 UTCEPSS rescore
  16. 2026-06-30 23:22 UTCEPSS rescore
  17. 2026-06-30 23:22 UTCEPSS rescore
  18. 2026-06-29 14:06 UTCEPSS rescore
  19. 2026-06-29 14:06 UTCEPSS rescore
  20. 2026-06-28 14:07 UTCEPSS rescore
  21. 2026-06-28 14:07 UTCEPSS rescore
  22. 2026-06-28 04:55 UTCEPSS rescore
  23. 2026-06-28 04:55 UTCEPSS rescore
  24. 2026-06-27 03:08 UTCEPSS rescore
  25. 2026-06-27 03:08 UTCEPSS rescore
  26. 2026-06-25 13:49 UTCEPSS rescore
  27. 2026-06-25 13:49 UTCEPSS rescore
  28. 2026-06-24 14:04 UTCEPSS rescore
  29. 2026-06-24 14:04 UTCEPSS rescore
  30. 2026-06-23 21:32 UTCEPSS rescore
  31. 2026-06-23 21:32 UTCEPSS rescore
  32. 2026-06-22 14:25 UTCEPSS rescore
  33. 2026-06-22 14:25 UTCEPSS rescore
  34. 2026-06-21 14:56 UTCEPSS rescore
  35. 2026-06-21 14:56 UTCEPSS rescore
  36. 2026-06-21 01:59 UTCEPSS rescore
  37. 2026-06-21 01:59 UTCEPSS rescore
  38. 2026-06-19 19:25 UTCEPSS rescore
  39. 2026-06-19 19:25 UTCEPSS rescore
  40. 2026-06-19 15:13 UTCNVD updateCVSS v3 → 5.5 · severity → MEDIUM
  41. 2026-06-18 17:52 UTCEPSS rescore
  42. 2026-06-18 17:52 UTCEPSS rescore
  43. 2026-06-17 22:05 UTCOSV refresh
  44. 2026-06-17 17:52 UTCEPSS rescore
  45. 2026-06-16 17:52 UTCEPSS rescore
  46. 2026-06-16 17:52 UTCEPSS rescore
  47. 2026-06-14 23:18 UTCMITRE cvelistV5
  48. 2026-06-14 23:17 UTCEPSS rescore
  49. 2026-06-13 23:00 UTCEPSS rescore
  50. 2026-06-12 23:11 UTCEPSS rescore
  51. 2026-06-11 14:00 UTCEPSS rescore
  52. 2026-06-10 13:22 UTCEPSS rescore
  53. 2026-06-08 14:16 UTCEPSS rescore
  54. 2026-06-08 14:16 UTCEPSS rescore
  55. 2026-06-07 15:24 UTCEPSS rescore
  56. 2026-06-06 13:47 UTCEPSS rescore
  57. 2026-06-06 13:47 UTCEPSS rescore
  58. 2026-06-05 22:46 UTCEPSS rescore
  59. 2026-06-05 22:46 UTCEPSS rescore
  60. 2026-06-05 06:10 UTCEPSS rescore
  61. 2026-06-05 06:10 UTCEPSS rescore
  62. 2026-06-04 13:12 UTCEPSS rescore
  63. 2026-06-04 13:12 UTCEPSS rescore
  64. 2026-06-02 20:12 UTCEPSS rescore
  65. 2026-06-01 13:51 UTCEPSS rescore
  66. 2026-06-01 13:51 UTCEPSS rescore
  67. 2026-05-31 22:30 UTCEPSS rescore
  68. 2026-05-31 22:30 UTCEPSS rescore
  69. 2026-05-31 00:16 UTCEPSS rescore
  70. 2026-05-29 19:24 UTCEG score recompute
  71. 2026-05-29 19:24 UTCVendor advisory
  72. 2026-05-29 19:23 UTCGHSA enrichment
  73. 2026-05-29 13:44 UTCEPSS rescore

Related CVEs(same product + same vendor)

Frequently asked(5)

What is CVE-2025-40164?
CVE-2025-40164 is a medium vulnerability published on November 12, 2025. In the Linux kernel, the following vulnerability has been resolved: usbnet: Fix using smpprocessorid() in preemptible code warnings Syzbot reported the following warning: BUG: using smpprocessorid() in preemptible [00000000] code: dhcpcd/2879 caller is usbnetskbreturn+0x74/0x490…
When was CVE-2025-40164 disclosed?
CVE-2025-40164 was first published in the National Vulnerability Database on November 12, 2025, with the most recent update on June 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-40164 actively exploited?
CVE-2025-40164 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 91.8% of all scored CVEs.
What is the CVSS score of CVE-2025-40164?
CVE-2025-40164 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2025-40164?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-40164, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2025-40164

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