CVE-2026-63922

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-19. the CNA's CVSS baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — 4 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

A fix is available — apply it.

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

ipv6: exthdrs: refresh nh after handling HAO option

ip6_parse_tlv() caches skb_network_header(skb) in nh while walking IPv6 TLVs.

ipv6_dest_hao() may call pskb_expand_head() for a cloned skb, which can move the skb head and invalidate the cached network header pointer. Refresh nh after ipv6_dest_hao() returns so any trailing padding or TLVs are parsed from the current skb head.

This matches the existing pattern used in ip6_parse_tlv() after helpers that can modify skb header storage.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
51%
KEV
Not listed

Published

July 19, 2026

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Aug 26, 2026
No patch confirmed yet.
generic

ipv6: exthdrs: refresh nh after handling HAO option - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f7b52afe3592eae66e160586b45a3f2242972c63
generic

ipv6: exthdrs: refresh nh after handling HAO option - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9b6dcc0a39fd71752937f0b6b3973e1416085dcf
generic

ipv6: exthdrs: refresh nh after handling HAO option - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/751db1b802a067b7fff25880f4e9f9152a171538
generic

ipv6: exthdrs: refresh nh after handling HAO option - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ff375ed1cba81392346c5bfbf0bb7a13b2946f99
generic

ipv6: exthdrs: refresh nh after handling HAO option - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/12d957979e4a800167842f1b42be6a606d227ebe
generic

ipv6: exthdrs: refresh nh after handling HAO option - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1a11eb7431e3d2882f5bd5939c5a9bbc65ccf4d1
generic

ipv6: exthdrs: refresh nh after handling HAO option - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f8aabed3ff3e986920cf02a2a2785e08e586b234
generic

ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b3ac54e5c905f86d22b502eacb5686a282c5659f

Vendor Advisories for CVE-2026-63922(1)

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

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-08-30ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-08-30ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-08-30ubuntu

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 (54 versions)5.10.259-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)6.1.176-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)6.12.94-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (138 versions)7.0.12-1—

All Vendor Advisories

(5)

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 59× in last 7d / 346× 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 423 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-63922?
CVE-2026-63922 is a critical vulnerability published on July 19, 2026. In the Linux kernel, the following vulnerability has been resolved: ipv6: exthdrs: refresh nh after handling HAO option ip6parsetlv() caches skbnetworkheader(skb) in nh while walking IPv6 TLVs. ipv6desthao() may call pskbexpandhead() for a cloned skb, which can move the skb head and invalidate the…
When was CVE-2026-63922 disclosed?
CVE-2026-63922 was first published in the National Vulnerability Database on July 19, 2026, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63922 actively exploited?
CVE-2026-63922 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 49.3% of all scored CVEs.
What is the CVSS score of CVE-2026-63922?
CVE-2026-63922 has a CVSS v4.0 base score of 9.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-63922?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63922, 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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