CVE-2025-71182

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-01-31. 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:

can: j1939: make j1939_session_activate() fail if device is no longer registered

syzbot is still reporting

unregister_netdevice: waiting for vcan0 to become free. Usage count = 2

even after commit 93a27b5891b8 ("can: j1939: add missing calls in NETDEV_UNREGISTER notification handler") was added. A debug printk() patch found that j1939_session_activate() can succeed even after j1939_cancel_active_session() from j1939_netdev_notify(NETDEV_UNREGISTER) has completed.

Since j1939_cancel_active_session() is processed with the session list lock held, checking ndev->reg_state in j1939_session_activate() with the session list lock held can reliably close the race window.

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
6%
KEV
Not listed

Published

January 31, 2026

Last Modified

June 17, 2026

Advisory Details (7)

Auto-updated Aug 9, 2026
No patch confirmed yet.
generic

can: j1939: make j1939_session_activate() fail if device is no longer registered - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ebb0dfd718dd31c8d3600612ca4b7207ec3d923a
generic

can: j1939: make j1939_session_activate() fail if device is no longer registered - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c3a4316e3c746af415c0fd6c6d489ad13f53714d
generic

can: j1939: make j1939_session_activate() fail if device is no longer registered - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ba6f0d1832eeb5eb3a6dc5cb30e0f720b3cb3536
generic

can: j1939: make j1939_session_activate() fail if device is no longer registered - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/79dd3f1d9dd310c2af89b09c71f34d93973b200f
generic

can: j1939: make j1939_session_activate() fail if device is no longer registered - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/78d87b72cebe2a993fd5b017e9f14fb6278f2eae
generic

can: j1939: make j1939_session_activate() fail if device is no longer registered - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5d5602236f5db19e8b337a2cd87a90ace5ea776d
generic

can: j1939: make j1939_session_activate() fail if device is no longer registered - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/46ca9dc978923c5e1247a9e9519240ba7ace413c

Patch Availability(18)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1067 (5.15.0-1067.71) @ jammy2026-06-07ubuntu
ubuntulinux-tools-gcp-fips-5.15 (5.15.0.1103.93) @ jammy2026-06-07ubuntu
ubuntulinux-tools-gke-5.15 (5.15.0.1099.98) @ jammy2026-06-07ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1094.98) @ jammy2026-06-07ubuntu
ubuntulinux-tools-realtime-5.15 (5.15.0.1102.106) @ jammy2026-06-07ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1109.94) @ jammy2026-06-07ubuntu
ubuntulinux-tools-nvidia-tegra-igx-rt-5.15 (5.15.0.1044.46) @ jammy2026-06-07ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1097.95) @ jammy2026-06-07ubuntu
ubuntulinux-tools-azure-lts-22.04 (5.15.0.1109.107) @ jammy2026-06-07ubuntu
ubuntulinux-tools-azure-edge (5.15.0.1110.119~20.04.1) @ focal2026-06-07ubuntu
ubuntulinux-virtual-6.8 (6.8.0-117.117) @ noble2026-06-07ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1054.57.1) @ noble2026-06-07ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-116.116+fips1) @ noble2026-06-07ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1024.24) @ noble2026-06-07ubuntu
ubuntulinux-tools-nvidia-hwe-22.04-edge (6.8.0-1054.57~22.04.1) @ jammy2026-06-07ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1056.62) @ noble2026-06-07ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1059.65+fips1) @ noble2026-06-07ubuntu
linuxKernel @ 5.10.248—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.

Affected Packages

(5 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (48 versions)5.10.249-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.159-1~deb11u1 (14 versions)6.1.162-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (46 versions)6.1.162-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.69-1~bpo12+1 (10 versions)6.12.69-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.18~rc7-1~exp1 (96 versions)6.18.8-1—

All Vendor Advisories

(24)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 7× in last 7d / 27× 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.

Showing the most recent 100 of 161 total refreshes for this CVE.

  1. 2026-09-20 20:15 UTCEPSS rescore
  2. 2026-09-19 00:00 UTCOSV refresh
  3. 2026-09-18 19:27 UTCEPSS rescore
  4. 2026-09-17 19:30 UTCEPSS rescore
  5. 2026-09-16 14:07 UTCEPSS rescore
  6. 2026-09-16 05:14 UTCEPSS rescore
  7. 2026-09-15 03:10 UTCEPSS rescore
  8. 2026-09-13 16:46 UTCEPSS rescore
  9. 2026-09-12 15:00 UTCEPSS rescore
  10. 2026-09-11 14:52 UTCEPSS rescore
  11. 2026-09-11 09:36 UTCEPSS rescore
  12. 2026-09-10 09:34 UTCEPSS rescore
  13. 2026-09-08 22:00 UTCEPSS rescore
  14. 2026-09-07 16:00 UTCEPSS rescore
  15. 2026-09-06 13:47 UTCEPSS rescore
  16. 2026-09-04 05:06 UTCEPSS rescore
  17. 2026-09-02 14:11 UTCEPSS rescore
  18. 2026-09-01 13:53 UTCEPSS rescore
  19. 2026-08-31 04:02 UTCOSV refresh
  20. 2026-08-30 01:21 UTCEPSS rescore
  21. 2026-08-28 21:40 UTCEPSS rescore
  22. 2026-08-27 14:24 UTCEPSS rescore
  23. 2026-08-26 14:45 UTCEPSS rescore
  24. 2026-08-25 13:48 UTCEPSS rescore
  25. 2026-08-24 14:16 UTCEPSS rescore
Show 75 more
  1. 2026-08-23 00:18 UTCEPSS rescore
  2. 2026-08-21 23:48 UTCEPSS rescore
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-19 17:03 UTCEPSS rescore
  5. 2026-08-18 13:48 UTCEPSS rescore
  6. 2026-08-17 13:46 UTCEPSS rescore
  7. 2026-08-16 14:55 UTCEPSS rescore
  8. 2026-08-16 02:14 UTCEPSS rescore
  9. 2026-08-15 01:30 UTCEPSS rescore
  10. 2026-08-14 11:47 UTCEG score recompute
  11. 2026-08-14 11:47 UTCVendor advisory
  12. 2026-08-14 11:47 UTCGHSA enrichment
  13. 2026-08-13 22:00 UTCEPSS rescore
  14. 2026-08-13 03:56 UTCEG score recompute
  15. 2026-08-13 03:56 UTCVendor advisory
  16. 2026-08-13 03:56 UTCGHSA enrichment
  17. 2026-08-12 13:50 UTCEPSS rescore
  18. 2026-08-11 13:42 UTCEPSS rescore
  19. 2026-08-10 23:59 UTCEPSS rescore
  20. 2026-08-09 16:18 UTCEG score recompute
  21. 2026-08-09 16:18 UTCVendor advisory
  22. 2026-08-09 16:18 UTCGHSA enrichment
  23. 2026-08-09 13:46 UTCEPSS rescore
  24. 2026-08-08 16:36 UTCEPSS rescore
  25. 2026-08-07 23:07 UTCEG score recompute
  26. 2026-08-07 23:07 UTCVendor advisory
  27. 2026-08-07 23:07 UTCGHSA enrichment
  28. 2026-08-07 16:27 UTCEPSS rescore
  29. 2026-08-06 13:46 UTCEPSS rescore
  30. 2026-08-06 04:38 UTCEG score recompute
  31. 2026-08-06 04:38 UTCVendor advisory
  32. 2026-08-06 04:38 UTCGHSA enrichment
  33. 2026-08-05 19:17 UTCEPSS rescore
  34. 2026-08-04 10:37 UTCEPSS rescore
  35. 2026-08-03 10:35 UTCEPSS rescore
  36. 2026-08-02 21:46 UTCEG score recompute
  37. 2026-08-02 21:46 UTCVendor advisory
  38. 2026-08-02 21:46 UTCGHSA enrichment
  39. 2026-08-02 02:26 UTCEPSS rescore
  40. 2026-08-01 04:15 UTCEPSS rescore
  41. 2026-07-31 02:04 UTCOSV refresh
  42. 2026-07-30 16:27 UTCEPSS rescore
  43. 2026-07-30 01:30 UTCEPSS rescore
  44. 2026-07-27 14:13 UTCEPSS rescore
  45. 2026-07-25 14:17 UTCEPSS rescore
  46. 2026-07-25 14:17 UTCEPSS rescore
  47. 2026-07-24 14:17 UTCEPSS rescore
  48. 2026-07-23 14:18 UTCEPSS rescore
  49. 2026-07-23 14:18 UTCEPSS rescore
  50. 2026-07-23 03:03 UTCEG score recompute
  51. 2026-07-22 14:08 UTCEPSS rescore
  52. 2026-07-21 15:24 UTCEPSS rescore
  53. 2026-07-20 17:08 UTCEPSS rescore
  54. 2026-07-19 14:30 UTCEPSS rescore
  55. 2026-07-19 14:30 UTCEPSS rescore
  56. 2026-07-18 10:04 UTCEPSS rescore
  57. 2026-07-18 10:04 UTCEPSS rescore
  58. 2026-07-16 17:02 UTCEPSS rescore
  59. 2026-07-16 17:02 UTCEPSS rescore
  60. 2026-07-15 16:57 UTCEPSS rescore
  61. 2026-07-15 16:57 UTCEPSS rescore
  62. 2026-07-15 02:00 UTCEPSS rescore
  63. 2026-07-15 01:59 UTCEPSS rescore
  64. 2026-07-13 10:37 UTCOSV refresh
  65. 2026-07-13 06:12 UTCEPSS rescore
  66. 2026-07-12 05:46 UTCEPSS rescore
  67. 2026-07-12 05:46 UTCEPSS rescore
  68. 2026-07-11 08:27 UTCEPSS rescore
  69. 2026-07-11 08:27 UTCEPSS rescore
  70. 2026-07-09 19:10 UTCEPSS rescore
  71. 2026-07-08 15:15 UTCEPSS rescore
  72. 2026-07-07 13:46 UTCEPSS rescore
  73. 2026-07-06 16:27 UTCEPSS rescore
  74. 2026-07-06 02:23 UTCEPSS rescore
  75. 2026-07-04 06:31 UTCEPSS rescore

Related CVEs(same product + same vendor)

Frequently asked(5)

What is CVE-2025-71182?
CVE-2025-71182 is a medium vulnerability published on January 31, 2026. In the Linux kernel, the following vulnerability has been resolved: can: j1939: make j1939sessionactivate() fail if device is no longer registered syzbot is still reporting unregister_netdevice: waiting for vcan0 to become free. Usage count = 2 even after commit 93a27b5891b8 ("can: j1939: add…
When was CVE-2025-71182 disclosed?
CVE-2025-71182 was first published in the National Vulnerability Database on January 31, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-71182 actively exploited?
CVE-2025-71182 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 93.7% of all scored CVEs.
What is the CVSS score of CVE-2025-71182?
CVE-2025-71182 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2025-71182?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-71182, 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.

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