CVE-2019-3701

MEDIUMNVD 4.44.4—
EchelonGraph scoreMEDIUM confidence

Score 4.4 from GitHub Security Advisory published 2022-05-14. NVD baseline CVSS 4.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
4.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 4.4Exploit: None knownExposed: 0

A fix is available — apply it.

An issue was discovered in can_can_gw_rcv in net/can/gw.c in the Linux kernel through 4.19.13. The CAN frame modification rules allow bitwise logical operations that can be also applied to the can_dlc field. The privileged user "root" with CAP_NET_ADMIN can create a CAN frame modification rule that makes the data length code a higher value than the available CAN frame data size. In combination with a configured checksum calculation where the result is stored relatively to the end of the data (e.g. cgw_csum_xor_rel) the tail of the skb (e.g. frag_list pointer in skb_shared_info) can be rewritten which finally can cause a system crash. Because of a missing check, the CAN drivers may write arbitrary content beyond the data registers in the CAN controller's I/O memory when processing can-gw manipulated outgoing frames.

CVSS v3
4.4
EG Score
4.4(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
Severity44% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
51%
KEV
Not listed

Published

January 3, 2019

Last Modified

November 21, 2024

References (28)

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-virtual-lts-xenial (4.4.0.145.153) @ xenial2026-05-27ubuntu
ubuntulinux-image-aws-hwe (4.15.0.1047.47) @ xenial2026-05-27ubuntu
ubuntulinux-image-virtual-lts-xenial (4.4.0.144.127) @ trusty2026-05-27ubuntu
ubuntulinux-image-virtual-hwe-16.04-edge (4.15.0.60.62) @ bionic2026-05-27ubuntu

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

(6 across 5 ecosystems)
Debian:8(2)
PackageVulnerable rangeFixed inDependents
linux3.16.36-1 ... 3.16.7-ckt9-3~deb8u1~bpo70+1 (61 versions)3.16.64-1—
linux-4.94.9.110-1~deb8u1, 4.9.144-3.1~deb8u14.9.168-1~deb8u1—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux—4.19.20-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux—4.19.20-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—4.19.20-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—4.19.20-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(4)

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 6× in last 7d / 24× 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 152 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2019-3701?
CVE-2019-3701 is a medium vulnerability published on January 3, 2019. An issue was discovered in cancangwrcv in net/can/gw.c in the Linux kernel through 4.19.13. The CAN frame modification rules allow bitwise logical operations that can be also applied to the candlc field. The privileged user "root" with CAPNETADMIN can create a CAN frame modification rule that makes…
When was CVE-2019-3701 disclosed?
CVE-2019-3701 was first published in the National Vulnerability Database on January 3, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-3701 actively exploited?
CVE-2019-3701 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 49.0% of all scored CVEs.
What is the CVSS score of CVE-2019-3701?
CVE-2019-3701 has a CVSS v3 base score of 4.4 (NVD).
How do I remediate CVE-2019-3701?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-3701, 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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