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CVE-2025-71182 (GCVE-0-2025-71182)

Vulnerability from cvelistv5 – Published: 2026-01-31 11:38 – Updated: 2026-06-11 18:44
VLAI
Title
can: j1939: make j1939_session_activate() fail if device is no longer registered
Summary
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.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 20:42 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 9d71dd0c70099914fcd063135da3c580865e924c , < ebb0dfd718dd31c8d3600612ca4b7207ec3d923a (git)
Affected: 9d71dd0c70099914fcd063135da3c580865e924c , < c3a4316e3c746af415c0fd6c6d489ad13f53714d (git)
Affected: 9d71dd0c70099914fcd063135da3c580865e924c , < 46ca9dc978923c5e1247a9e9519240ba7ace413c (git)
Affected: 9d71dd0c70099914fcd063135da3c580865e924c , < 78d87b72cebe2a993fd5b017e9f14fb6278f2eae (git)
Affected: 9d71dd0c70099914fcd063135da3c580865e924c , < ba6f0d1832eeb5eb3a6dc5cb30e0f720b3cb3536 (git)
Affected: 9d71dd0c70099914fcd063135da3c580865e924c , < 79dd3f1d9dd310c2af89b09c71f34d93973b200f (git)
Affected: 9d71dd0c70099914fcd063135da3c580865e924c , < 5d5602236f5db19e8b337a2cd87a90ace5ea776d (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.4
Unaffected: 0 , < 5.4 (semver)
Unaffected: 5.10.248 , ≤ 5.10.* (semver)
Unaffected: 5.15.198 , ≤ 5.15.* (semver)
Unaffected: 6.1.161 , ≤ 6.1.* (semver)
Unaffected: 6.6.121 , ≤ 6.6.* (semver)
Unaffected: 6.12.66 , ≤ 6.12.* (semver)
Unaffected: 6.18.6 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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Un parche de depuraci\u00f3n printk() encontr\u00f3 que j1939_session_activate() puede tener \u00e9xito incluso despu\u00e9s de que j1939_cancel_active_session() de j1939_netdev_notify(NETDEV_UNREGISTER) se haya completado.\\n\\nDado que j1939_cancel_active_session() se procesa con el bloqueo de la lista de sesiones mantenido, verificar ndev-\u0026gt;reg_state en j1939_session_activate() con el bloqueo de la lista de sesiones mantenido puede cerrar de forma fiable la ventana de 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Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.4.1\",\"versionEndExcluding\":\"5.10.248\",\"matchCriteriaId\":\"6E08423B-6154-4881-8FBD-3953775735D0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.198\",\"matchCriteriaId\":\"82159CAA-B6BA-43C6-85D8-65BDBC175A7E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.161\",\"matchCriteriaId\":\"E135B7E2-61FC-4DC1-8570-ABD67894FFDE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.121\",\"matchCriteriaId\":\"BB7A164B-7422-4A1C-82FB-5FCAEE53C06C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.66\",\"matchCriteriaId\":\"F72B884C-B44F-40E4-9895-CE421AC663D0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.18.6\",\"matchCriteriaId\":\"879529BC-5B4C-4EBE-BF1D-1A31404A8B2E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.4:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"4D70AB13-37BE-4BD3-A652-10191F1642E4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"17B67AA7-40D6-4AFA-8459-F200F3D7CFD1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"C47E4CC9-C826-4FA9-B014-7FE3D9B318B2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"F71D92C0-C023-48BD-B3B6-70B638EEE298\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"13580667-0A98-40CC-B29F-D12790B91BDB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"CAD1FED7-CF48-47BF-AC7D-7B6FA3C065FC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"3EF854A1-ABB1-4E93-BE9A-44569EC76C0D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*\",\"matchCriteriaId\":\"F5DC0CA6-F0AF-4DDF-A882-3DADB9A886A7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc8:*:*:*:*:*:*\",\"matchCriteriaId\":\"EB5B7DFC-C36B-45D8-922C-877569FDDF43\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/46ca9dc978923c5e1247a9e9519240ba7ace413c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5d5602236f5db19e8b337a2cd87a90ace5ea776d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/78d87b72cebe2a993fd5b017e9f14fb6278f2eae\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/79dd3f1d9dd310c2af89b09c71f34d93973b200f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ba6f0d1832eeb5eb3a6dc5cb30e0f720b3cb3536\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c3a4316e3c746af415c0fd6c6d489ad13f53714d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ebb0dfd718dd31c8d3600612ca4b7207ec3d923a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T11:38:18+00:00",
      "cve": "CVE-2025-71182",
      "id": "CVE-2025-71182",
      "initial_release_date": "2025-01-01T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: can: j1939: make j1939_session_activate() fail if device is no longer registered",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-71182.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-71182\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-06-10T20:42:04.625425Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-06-11T17:39:00.826Z\"}}], \"cna\": {\"title\": \"can: j1939: make j1939_session_activate() fail if device is no longer registered\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"9d71dd0c70099914fcd063135da3c580865e924c\", \"lessThan\": \"ebb0dfd718dd31c8d3600612ca4b7207ec3d923a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9d71dd0c70099914fcd063135da3c580865e924c\", \"lessThan\": \"c3a4316e3c746af415c0fd6c6d489ad13f53714d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9d71dd0c70099914fcd063135da3c580865e924c\", \"lessThan\": \"46ca9dc978923c5e1247a9e9519240ba7ace413c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9d71dd0c70099914fcd063135da3c580865e924c\", \"lessThan\": \"78d87b72cebe2a993fd5b017e9f14fb6278f2eae\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9d71dd0c70099914fcd063135da3c580865e924c\", \"lessThan\": \"ba6f0d1832eeb5eb3a6dc5cb30e0f720b3cb3536\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9d71dd0c70099914fcd063135da3c580865e924c\", \"lessThan\": \"79dd3f1d9dd310c2af89b09c71f34d93973b200f\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9d71dd0c70099914fcd063135da3c580865e924c\", \"lessThan\": \"5d5602236f5db19e8b337a2cd87a90ace5ea776d\", \"versionType\": \"git\"}], \"programFiles\": [\"net/can/j1939/transport.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.4\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.4\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.248\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.198\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.161\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.121\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.66\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.18.6\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.18.*\"}, {\"status\": \"unaffected\", \"version\": \"6.19\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/can/j1939/transport.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/ebb0dfd718dd31c8d3600612ca4b7207ec3d923a\"}, {\"url\": \"https://git.kernel.org/stable/c/c3a4316e3c746af415c0fd6c6d489ad13f53714d\"}, {\"url\": \"https://git.kernel.org/stable/c/46ca9dc978923c5e1247a9e9519240ba7ace413c\"}, {\"url\": \"https://git.kernel.org/stable/c/78d87b72cebe2a993fd5b017e9f14fb6278f2eae\"}, {\"url\": \"https://git.kernel.org/stable/c/ba6f0d1832eeb5eb3a6dc5cb30e0f720b3cb3536\"}, {\"url\": \"https://git.kernel.org/stable/c/79dd3f1d9dd310c2af89b09c71f34d93973b200f\"}, {\"url\": \"https://git.kernel.org/stable/c/5d5602236f5db19e8b337a2cd87a90ace5ea776d\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncan: j1939: make j1939_session_activate() fail if device is no longer registered\\n\\nsyzbot is still reporting\\n\\n  unregister_netdevice: waiting for vcan0 to become free. Usage count = 2\\n\\neven after commit 93a27b5891b8 (\\\"can: j1939: add missing calls in\\nNETDEV_UNREGISTER notification handler\\\") was added. A debug printk() patch\\nfound that j1939_session_activate() can succeed even after\\nj1939_cancel_active_session() from j1939_netdev_notify(NETDEV_UNREGISTER)\\nhas completed.\\n\\nSince j1939_cancel_active_session() is processed with the session list lock\\nheld, checking ndev-\u003ereg_state in j1939_session_activate() with the session\\nlist lock held can reliably close the race window.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.248\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.198\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.161\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.121\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.66\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.18.6\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.19\", \"versionStartIncluding\": \"5.4\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T21:56:15.065Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-71182\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-11T18:44:19.058Z\", \"dateReserved\": \"2026-01-31T11:36:51.185Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2026-01-31T11:38:55.157Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.