CVE-2026-53131

CRITICALPre-NVD 9.49.4—
EchelonGraph scoreHIGH confidence

Score 9.4 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-25. a secondary CVSS source baseline 9.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.4
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.4Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

In the Linux kernel, the following vulnerability has been resolved:

netfilter: require Ethernet MAC header before using eth_hdr()

ip6t_eui64, xt_mac, the bitmap:ip,mac, hash:ip,mac, and hash:mac ipset types, and nf_log_syslog access eth_hdr(skb) after either assuming that the skb is associated with an Ethernet device or checking only that the ETH_HLEN bytes at skb_mac_header(skb) lie between skb->head and skb->data.

Make these paths first verify that the skb is associated with an Ethernet device, that the MAC header was set, and that it spans at least a full Ethernet header before accessing eth_hdr(skb).

CVSS v3
9.4
EG Score
9.4(high)
EPSS
34.6%
KEV
Not listed

Published

June 25, 2026

Last Modified

July 6, 2026

Advisory Details (7)

Auto-updated Jun 28, 2026
No patch confirmed yet.
generic

netfilter: require Ethernet MAC header before using eth_hdr() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cea435ea7e868ea6fdf039bc4f2090c1d829b556
generic

netfilter: require Ethernet MAC header before using eth_hdr() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/726abf97566867f808fec9d8a408eb9698bd570a
generic

netfilter: require Ethernet MAC header before using eth_hdr() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/62443dc21114c0bbc476fa62973db89743f2f137
generic

netfilter: require Ethernet MAC header before using eth_hdr() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5d634afb8b83b49de562792fd0d047416a43bd4d
generic

netfilter: require Ethernet MAC header before using eth_hdr() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4435888e1bf139d2bfe5911643d4217382136743
generic

netfilter: require Ethernet MAC header before using eth_hdr() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/367abcacc13a8e2e7624408b7f593bd1e60e49d9
generic

netfilter: require Ethernet MAC header before using eth_hdr() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/063f43361e884acd7300790e90194430275d0d0c

Vendor Advisories for CVE-2026-53131(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Data Freshness Timeline

(refreshed 86× in last 7d / 112× 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 112 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-53131?
CVE-2026-53131 is a critical vulnerability published on June 25, 2026. In the Linux kernel, the following vulnerability has been resolved: netfilter: require Ethernet MAC header before using eth_hdr() ip6teui64, xtmac, the bitmap:ip,mac, hash:ip,mac, and hash:mac ipset types, and nflogsyslog access eth_hdr(skb) after either assuming that the skb is associated with an…
When was CVE-2026-53131 disclosed?
CVE-2026-53131 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on July 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53131 actively exploited?
CVE-2026-53131 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 34.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-53131?
CVE-2026-53131 has a CVSS v3 base score of 9.4 (NVD).
How do I remediate CVE-2026-53131?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53131, 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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