CVE-2023-39197

MEDIUMNVD 4.04.0—
EchelonGraph scoreMEDIUM confidence

Score 4.0 from GitHub Security Advisory published 2024-01-23. NVD baseline CVSS 4.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
4.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 4.0Exploit: None knownExposed: 0

A fix is available — apply it.

An out-of-bounds read vulnerability was found in Netfilter Connection Tracking (conntrack) in the Linux kernel. This flaw allows a remote user to disclose sensitive information via the DCCP protocol.

CVSS v3
4.0
EG Score
4.0(medium)
EG Risk
18(Track)
EG Risk 18/100SSVC: 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
Severity40% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
61%
KEV
Not listed

Published

January 23, 2024

Last Modified

August 6, 2026

Advisory Details (2)

Auto-updated Aug 6, 2026
Patch available. Sources: redhat.
redhat Patch Available

2218342 – (CVE-2023-39197, ZDI-CAN-21202) CVE-2023-39197 kernel: DCCP: conntrack out-of-bounds read in nf_conntrack_dccp_packet()

https://bugzilla.redhat.com/show_bug.cgi?id=2218342
redhat Patch Available

CVE-2023-39197 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 nor Red Hat Enterprise Linux 9 kernels compile with DCCP IP support. Therefore, neither product is

https://access.redhat.com/security/cve/CVE-2023-39197

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-aws (4.4.0.1167.171) @ xenial2026-05-24ubuntu
ubuntulinux-virtual-hwe-16.04-edge (4.15.0.223.7) @ xenial2026-05-24ubuntu
ubuntulinux-tools-oracle (4.15.0.1129.110) @ xenial2026-05-24ubuntu
ubuntulinux-tools-azure (4.15.0.1175.141) @ trusty2026-05-24ubuntu
ubuntulinux-virtual-lts-xenial (4.4.0.252.258) @ xenial2026-05-24ubuntu
ubuntulinux-tools-gke (4.15.0.1160.150) @ xenial2026-05-24ubuntu

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (33 versions)5.10.191-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.27-1 ... 6.1.38-4~bpo11+1 (8 versions)6.1.52-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—6.4.4-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—6.4.4-1—

Weakness Classification(1)

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

All Vendor Advisories

(6)

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 / 29× 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 180 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2023-39197?
CVE-2023-39197 is a medium vulnerability published on January 23, 2024. An out-of-bounds read vulnerability was found in Netfilter Connection Tracking (conntrack) in the Linux kernel. This flaw allows a remote user to disclose sensitive information via the DCCP protocol.
When was CVE-2023-39197 disclosed?
CVE-2023-39197 was first published in the National Vulnerability Database on January 23, 2024, with the most recent update on August 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-39197 actively exploited?
CVE-2023-39197 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 39.4% of all scored CVEs.
What is the CVSS score of CVE-2023-39197?
CVE-2023-39197 has a CVSS v3 base score of 4.0 (NVD).
How do I remediate CVE-2023-39197?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-39197, 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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