CVE-2026-46244

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 — 3 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:

netfilter: nft_inner: Fix IPv6 inner_thoff desync

In nft_inner_parse_l2l3(), when processing inner IPv6 packets, ipv6_find_hdr() correctly computes the transport header offset traversing all extension headers, but the result is immediately overwritten with nhoff + sizeof(_ip6h) (40 bytes), which only accounts for the IPv6 base header. This creates a desync between inner_thoff (wrong — points to extension header start) and l4proto (correct — e.g., IPPROTO_TCP), enabling transport header forgery and potential firewall bypass. This issue affects stable versions from Linux 6.2.

For comparison, the normal (non-inner) IPv6 path correctly preserves ipv6_find_hdr()'s result. Removing the incorrect overwrite ensures that ipv6_find_hdr()'s calculated transport header offset is preserved, thereby fixing the desynchronization.

CVSS v3
9.1
EG Score
9.1(medium)
EPSS
24.5%
KEV
Not listed

Published

June 3, 2026

Last Modified

July 22, 2026

Advisory Details (5)

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

netfilter: nft_inner: Fix IPv6 inner_thoff desync - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d0f98a3617f6ae5b1e95cde1e68e7ead4a1279ce
generic

netfilter: nft_inner: Fix IPv6 inner_thoff desync - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c161ad9157f5a0429b5ff94d9770faf3bf48d273
generic

netfilter: nft_inner: Fix IPv6 inner_thoff desync - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b6a91f68ebfed9c38e0e9150f58a9b85da07181c
generic

netfilter: nft_inner: Fix IPv6 inner_thoff desync - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/870d59e2cf218e7418491e26bad768cb16654582
generic

netfilter: nft_inner: Fix IPv6 inner_thoff desync - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/689bbf48c1f45130086ae1c46ab83ea4c753c601

Vendor Advisories for CVE-2026-46244(7)

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

Patch Availability(22)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-lowlatency-hwe-20.04-edge (6.8.0-134.134.1) @ noble2026-07-16ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1013.13) @ resolute2026-07-16ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-134.134+fips1) @ noble2026-07-16ubuntu
ubuntulinux-virtual-hwe-24.04 (6.17.0-40.40~24.04.1) @ noble2026-07-16ubuntu
ubuntulinux-tools-raspi-6.17 (6.17.0-1021.21) @ questing2026-07-16ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-27.27) @ resolute2026-07-16ubuntu
ubuntulinux-tools-raspi-6.8 (6.8.0-1060.64) @ noble2026-07-16ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2049.50) @ noble2026-07-16ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1008.8) @ resolute2026-07-16ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1014.14) @ resolute2026-07-16ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1029.30) @ noble2026-07-16ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1032.33) @ noble2026-07-16ubuntu
ubuntulinux-tools-nvidia-hwe-24.04 (6.17.0-1026.26) @ noble2026-07-16ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.17.0-40.40) @ questing2026-07-16ubuntu
ubuntulinux-tools-oem-6.17 (6.17.0-1028.28) @ noble2026-07-16ubuntu
ubuntulinux-tools-realtime-hwe-22.04 (6.8.1-1055.56~22.04.1) @ jammy2026-07-16ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1058.61.1) @ noble2026-07-16ubuntu
redhatkernel-0:5.14.0-687.22.1.el9_82026-07-06redhat
redhatkernel-0:6.12.0-211.30.1.el10_22026-07-02redhat
redhatkernel-0:5.14.0-570.125.1.el9_62026-07-01redhat
redhatkernel-0:5.14.0-427.135.1.el9_42026-07-01redhat
redhatkernel-0:6.12.0-55.84.1.el10_02026-06-29redhat

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.

Weakness Classification(1)

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

Additional Vendor Advisories

(18)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 12× in last 7d / 141× 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 241 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-46244?
CVE-2026-46244 is a critical vulnerability published on June 3, 2026. In the Linux kernel, the following vulnerability has been resolved: netfilter: nftinner: Fix IPv6 innerthoff desync In nftinnerparse_l2l3(), when processing inner IPv6 packets, ipv6findhdr() correctly computes the transport header offset traversing all extension headers, but the result is…
When was CVE-2026-46244 disclosed?
CVE-2026-46244 was first published in the National Vulnerability Database on June 3, 2026, with the most recent update on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46244 actively exploited?
CVE-2026-46244 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 24.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-46244?
CVE-2026-46244 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-46244?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46244, 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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