CVE-2026-64414

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-25. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 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: handle unreadable frags

sashiko reports: When an skb with unreadable fragments (such as from devmem TCP, where skb_frags_readable(skb) returns false) is processed by the u32 module, skb_copy_bits() will safely return a negative error code [..]

xt_u32: bail out with hotdrop in this case. gather_frags: return -1, just as if we had no fragment header. nfnetlink_queue: restrict to the linear part. nfnetlink_log: restrict to the linear part.

v2:

  • skb_zerocopy helpers don't copy readable flag, i.e. nfnetlink_queue
is broken too xt_u32 shouldn't return true if hotdrop was set.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
37%
KEV
Not listed

Published

July 25, 2026

Last Modified

August 17, 2026

Advisory Details (4)

Auto-updated Jul 27, 2026
No patch confirmed yet.
generic

netfilter: handle unreadable frags - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fc5bfe63bacf8a3ae307b62b34206406ca733354
generic

netfilter: handle unreadable frags - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/da5b58478a9c1b85608c9e40a3b8432d071b409e
generic

netfilter: handle unreadable frags - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/57056be3ec12e7d9ecd20a60d4060f510e4f284c
generic

netfilter: handle unreadable frags - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3b13e7635795394705920cca1e1db7e4ca2e334b

Vendor Advisories for CVE-2026-64414(1)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux-6.12—6.12.100-1~deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.95-1~bpo12+1 (30 versions)6.12.96-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (156 versions)7.1.4-1—

Data Freshness Timeline

(refreshed 20× in last 7d / 110× 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 141 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-64414?
CVE-2026-64414 is a high vulnerability published on July 25, 2026. In the Linux kernel, the following vulnerability has been resolved: netfilter: handle unreadable frags sashiko reports: When an skb with unreadable fragments (such as from devmem TCP, where skbfragsreadable(skb) returns false) is processed by the u32 module, skbcopybits() will safely return a…
When was CVE-2026-64414 disclosed?
CVE-2026-64414 was first published in the National Vulnerability Database on July 25, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64414 actively exploited?
CVE-2026-64414 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 63.4% of all scored CVEs.
What is the CVSS score of CVE-2026-64414?
CVE-2026-64414 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-64414?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64414, 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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