CVE-2020-11494

MEDIUMNVD 4.44.4—
EchelonGraph scoreMEDIUM confidence

Score 4.4 from GitHub Security Advisory (severity: LOW) published 2022-05-24. 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 slc_bump in drivers/net/can/slcan.c in the Linux kernel 3.16 through 5.6.2. It allows attackers to read uninitialized can_frame data, potentially containing sensitive information from kernel stack memory, if the configuration lacks CONFIG_INIT_STACK_ALL, aka CID-b9258a2cece4.

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

April 2, 2020

Last Modified

November 21, 2024

References (26)

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-image-virtual-hwe-16.04-edge (4.15.0.101.108) @ xenial2026-05-23ubuntu
ubuntulowlatency-4.4 (4.4.0-168) @ xenial2026-05-23ubuntu
ubuntulinux-image-virtual (5.3.0.53.45) @ eoan2026-05-23ubuntu
ubuntulinux-image-virtual-lts-xenial (4.4.0.179.187) @ xenial2026-05-23ubuntu
ubuntulinux-image-oem-osp1 (5.0.0.1052.55) @ bionic2026-05-23ubuntu

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

(7 across 6 ecosystems)
Debian:8(2)
PackageVulnerable rangeFixed inDependents
linux3.16.36-1 ... 3.16.81-1 (70 versions)3.16.84-1—
linux-4.94.9.110-1~deb8u1, 4.9.144-3.1~deb8u1, 4.9.168-1~deb8u1, 4.9.189-3~deb8u1, 4.9.210-1~deb8u14.9.210-1+deb9u1~deb8u1—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux—5.5.17-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux—5.5.17-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—5.5.17-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—5.5.17-1—
Debian:9(1)
PackageVulnerable rangeFixed inDependents
linux4.9.107-1 ... 4.9.88-1~bpo8+1 (59 versions)4.9.210-1+deb9u1—

Weakness Classification(3)

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

All Vendor Advisories

(8)

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 3× in last 7d / 25× 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 127 total refreshes for this CVE.

  1. 2026-08-25 13:45 UTCEPSS rescore
  2. 2026-08-20 22:51 UTCEPSS rescore
  3. 2026-08-19 17:00 UTCEPSS rescore
  4. 2026-08-18 13:44 UTCEPSS rescore
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  9. 2026-08-14 22:54 UTCOSV refresh
  10. 2026-08-13 21:57 UTCEPSS rescore
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  22. 2026-07-30 16:24 UTCEPSS rescore
  23. 2026-07-30 11:44 UTCOSV refresh
  24. 2026-07-30 01:27 UTCEPSS rescore
  25. 2026-07-28 15:32 UTCEPSS rescore
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  1. 2026-07-26 14:51 UTCEPSS rescore
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  6. 2026-07-23 01:48 UTCEG score recompute
  7. 2026-07-22 22:33 UTCEG score recompute
  8. 2026-07-22 14:05 UTCEPSS rescore
  9. 2026-07-21 15:22 UTCEPSS rescore
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  11. 2026-07-20 17:04 UTCEPSS rescore
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  19. 2026-07-15 16:55 UTCEPSS rescore
  20. 2026-07-13 22:27 UTCEPSS rescore
  21. 2026-07-13 06:10 UTCEPSS rescore
  22. 2026-07-13 06:10 UTCEPSS rescore
  23. 2026-07-12 20:38 UTCOSV refresh
  24. 2026-07-12 05:44 UTCEPSS rescore
  25. 2026-07-11 08:24 UTCEPSS rescore
  26. 2026-07-09 19:06 UTCEPSS rescore
  27. 2026-07-08 15:11 UTCEPSS rescore
  28. 2026-07-07 13:43 UTCEPSS rescore
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  42. 2026-06-25 13:47 UTCEPSS rescore
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  44. 2026-06-24 14:03 UTCEPSS rescore
  45. 2026-06-24 14:03 UTCEPSS rescore
  46. 2026-06-24 06:29 UTCOSV refresh
  47. 2026-06-23 21:31 UTCEPSS rescore
  48. 2026-06-23 21:31 UTCEPSS rescore
  49. 2026-06-22 14:23 UTCEPSS rescore
  50. 2026-06-22 14:23 UTCEPSS rescore
  51. 2026-06-21 14:54 UTCEPSS rescore
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  55. 2026-06-19 19:23 UTCEPSS rescore
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  75. 2026-06-07 15:23 UTCEPSS rescore

Frequently asked(5)

What is CVE-2020-11494?
CVE-2020-11494 is a medium vulnerability published on April 2, 2020. An issue was discovered in slcbump in drivers/net/can/slcan.c in the Linux kernel 3.16 through 5.6.2. It allows attackers to read uninitialized canframe data, potentially containing sensitive information from kernel stack memory, if the configuration lacks CONFIGINITSTACK_ALL, aka CID-b9258a2cece4.
When was CVE-2020-11494 disclosed?
CVE-2020-11494 was first published in the National Vulnerability Database on April 2, 2020, 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-2020-11494 actively exploited?
CVE-2020-11494 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 48.8% of all scored CVEs.
What is the CVSS score of CVE-2020-11494?
CVE-2020-11494 has a CVSS v3 base score of 4.4 (NVD).
How do I remediate CVE-2020-11494?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-11494, 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

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