CVE-2026-46266

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-03. a secondary CVSS source baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.1Exploit: NoneExposed: 0

A fix is available — apply it.

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

inet: RAW sockets using IPPROTO_RAW MUST drop incoming ICMP

Yizhou Zhao reported that simply having one RAW socket on protocol IPPROTO_RAW (255) was dangerous.

socket(AF_INET, SOCK_RAW, 255);

A malicious incoming ICMP packet can set the protocol field to 255 and match this socket, leading to FNHE cache changes.

inner = IP(src="192.168.2.1", dst="8.8.8.8", proto=255)/Raw("TEST") pkt = IP(src="192.168.1.1", dst="192.168.2.1")/ICMP(type=3, code=4, nexthopmtu=576)/inner

"man 7 raw" states:

A protocol of IPPROTO_RAW implies enabled IP_HDRINCL and is able to send any IP protocol that is specified in the passed header. Receiving of all IP protocols via IPPROTO_RAW is not possible using raw sockets.

Make sure we drop these malicious packets.

CVSS v3
9.1
EG Score
9.1(medium)
EPSS
26.8%
KEV
Not listed

Published

June 3, 2026

Last Modified

June 9, 2026

Advisory Details (5)

Auto-updated Jun 5, 2026
No patch confirmed yet.
generic

inet: RAW sockets using IPPROTO_RAW MUST drop incoming ICMP - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/db76b75ede3810e7cf9cfea5067d4f3e0993768b
generic

inet: RAW sockets using IPPROTO_RAW MUST drop incoming ICMP - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c89477ad79446867394360b29bb801010fc3ff22
generic

inet: RAW sockets using IPPROTO_RAW MUST drop incoming ICMP - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/719d3932b8f6e3348ce2f0ac58e278301fc17575
generic

inet: RAW sockets using IPPROTO_RAW MUST drop incoming ICMP - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/531c1aec81bfe19d00af13da5531fbb8209e4bd2
generic

inet: RAW sockets using IPPROTO_RAW MUST drop incoming ICMP - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/19e42490c89bac9a388f28179e66bebbef350f99

Vendor Advisories for CVE-2026-46266(1)

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

Patch Availability(12)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (6.17.0-40.40) @ questing2026-07-14ubuntu
ubuntulinux-tools-oem-6.17 (6.17.0-1028.28) @ noble2026-07-14ubuntu
ubuntulinux-virtual-6.8 (6.8.0-134.134) @ noble2026-07-14ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1058.61.1) @ noble2026-07-14ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (6.8.0-134.134.1) @ noble2026-07-14ubuntu
ubuntulinux-tools-nvidia-hwe-24.04 (6.17.0-1026.26) @ noble2026-07-14ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2049.50) @ noble2026-07-14ubuntu
ubuntulinux-tools-raspi-6.8 (6.8.0-1060.64) @ noble2026-07-14ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-134.134+fips1) @ noble2026-07-14ubuntu
ubuntulinux-tools-raspi-6.17 (6.17.0-1021.21) @ questing2026-07-14ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1029.30) @ noble2026-07-14ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1032.33) @ noble2026-07-14ubuntu

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.

All Vendor Advisories

(12)

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 30× in last 7d / 205× 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 331 total refreshes for this CVE.

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

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2026-46266?
CVE-2026-46266 is a critical vulnerability published on June 3, 2026. In the Linux kernel, the following vulnerability has been resolved: inet: RAW sockets using IPPROTO_RAW MUST drop incoming ICMP Yizhou Zhao reported that simply having one RAW socket on protocol IPPROTO_RAW (255) was dangerous. socket(AFINET, SOCKRAW, 255); A malicious incoming ICMP packet can set…
When was CVE-2026-46266 disclosed?
CVE-2026-46266 was first published in the National Vulnerability Database on June 3, 2026, with the most recent update on June 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46266 actively exploited?
CVE-2026-46266 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 26.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-46266?
CVE-2026-46266 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-46266?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46266, 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

Explore the affected products and dependency analysis for CVE-2026-46266

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