CVE-2026-64413

HIGHPre-NVD 7.07.0—
EchelonGraph scoreMEDIUM confidence

Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2026-07-25. a secondary CVSS source baseline 7.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.0Exploit: 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: ebtables: zero chainstack array

sashiko reports: looking at ebtables table translation, could a sparse cpu_possible_mask lead to an uninitialized pointer free?

If cpu_possible_mask is sparse (for example, CPU 0 and CPU 2 are possible, but CPU 1 is not), the allocation loop skips CPU 1. If vmalloc_node() fails at CPU 2, the cleanup loop will blindly decrement and call vfree() on newinfo->chainstack[1].

Not a real-world bug, such allocation isn't expected to fail in the first place.

CVSS v3
7.0
EG Score
7.0(medium)
EG Risk
36(Track)
EG Risk 36/100SSVC: 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
Severity70% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

July 25, 2026

Last Modified

August 17, 2026

Advisory Details (7)

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

netfilter: ebtables: zero chainstack array - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fc7f105451044501a50cfd530cfa3b472c54acbc
generic

netfilter: ebtables: zero chainstack array - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cbfe53599eebffd188938ab6774cc41794f6f9d5
generic

netfilter: ebtables: zero chainstack array - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9f74d28e903fa4fdf82f870d0aeadddc8196e41c
generic

netfilter: ebtables: zero chainstack array - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9e6c5169db423e51dcc66a73fd15409c0d38e088
generic

netfilter: ebtables: zero chainstack array - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5ee856e4208acafaaaf7b84824d39b78c21345d6
generic

netfilter: ebtables: zero chainstack array - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/42bef500d07b5769d916e9122a3e3fa3fd2245ef
generic

netfilter: ebtables: zero chainstack array - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2ade612967e2cdfb9290ebcb773f302c82f311fa

Vendor Advisories for CVE-2026-64413(2)

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

Affected Packages

(6 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (55 versions)5.10.262-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.177-1~deb11u1 (22 versions)6.1.180-1~deb11u1—
Debian:12(2)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (55 versions)6.1.180-1—
linux-6.12—6.12.100-1~deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.96-1 (31 versions)6.12.100-1—
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 31× in last 7d / 156× 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 188 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 00:05 UTCVendor advisory
  4. 2026-08-30 00:04 UTCGHSA enrichment
  5. 2026-08-28 21:42 UTCEPSS rescore
  6. 2026-08-27 21:05 UTCEG score recompute
  7. 2026-08-27 21:05 UTCVendor advisory
  8. 2026-08-27 21:05 UTCGHSA enrichment
  9. 2026-08-27 09:56 UTCVendor advisory
  10. 2026-08-27 09:56 UTCGHSA enrichment
  11. 2026-08-26 22:19 UTCEG score recompute
  12. 2026-08-26 22:19 UTCVendor advisory
  13. 2026-08-26 22:19 UTCGHSA enrichment
  14. 2026-08-26 14:47 UTCEPSS rescore
  15. 2026-08-26 11:29 UTCVendor advisory
  16. 2026-08-26 11:29 UTCGHSA enrichment
  17. 2026-08-26 00:37 UTCEG score recompute
  18. 2026-08-26 00:37 UTCVendor advisory
  19. 2026-08-26 00:37 UTCGHSA enrichment
  20. 2026-08-25 13:49 UTCEPSS rescore
  21. 2026-08-25 13:36 UTCVendor advisory
  22. 2026-08-25 13:36 UTCGHSA enrichment
  23. 2026-08-25 02:46 UTCVendor advisory
  24. 2026-08-25 02:46 UTCGHSA enrichment
  25. 2026-08-24 15:57 UTCEG score recompute
Show 75 more
  1. 2026-08-24 15:57 UTCVendor advisory
  2. 2026-08-24 15:57 UTCGHSA enrichment
  3. 2026-08-24 05:05 UTCVendor advisory
  4. 2026-08-24 05:05 UTCGHSA enrichment
  5. 2026-08-23 18:15 UTCVendor advisory
  6. 2026-08-23 18:15 UTCGHSA enrichment
  7. 2026-08-23 07:26 UTCVendor advisory
  8. 2026-08-23 07:26 UTCGHSA enrichment
  9. 2026-08-22 20:36 UTCVendor advisory
  10. 2026-08-22 20:36 UTCGHSA enrichment
  11. 2026-08-22 09:46 UTCEG score recompute
  12. 2026-08-22 09:46 UTCVendor advisory
  13. 2026-08-22 09:46 UTCGHSA enrichment
  14. 2026-08-21 23:49 UTCEPSS rescore
  15. 2026-08-21 22:56 UTCGHSA enrichment
  16. 2026-08-21 12:07 UTCVendor advisory
  17. 2026-08-21 12:07 UTCGHSA enrichment
  18. 2026-08-21 01:17 UTCEG score recompute
  19. 2026-08-21 01:17 UTCVendor advisory
  20. 2026-08-21 01:17 UTCGHSA enrichment
  21. 2026-08-20 22:55 UTCEPSS rescore
  22. 2026-08-20 14:28 UTCVendor advisory
  23. 2026-08-20 14:28 UTCGHSA enrichment
  24. 2026-08-20 03:31 UTCEG score recompute
  25. 2026-08-20 03:31 UTCGHSA enrichment
  26. 2026-08-19 17:04 UTCEPSS rescore
  27. 2026-08-19 16:29 UTCVendor advisory
  28. 2026-08-19 16:29 UTCGHSA enrichment
  29. 2026-08-19 05:40 UTCVendor advisory
  30. 2026-08-19 05:40 UTCGHSA enrichment
  31. 2026-08-18 18:49 UTCEG score recompute
  32. 2026-08-18 18:49 UTCVendor advisory
  33. 2026-08-18 18:49 UTCGHSA enrichment
  34. 2026-08-18 13:48 UTCEPSS rescore
  35. 2026-08-18 03:39 UTCVendor advisory
  36. 2026-08-18 03:39 UTCGHSA enrichment
  37. 2026-08-17 16:35 UTCEG score recompute
  38. 2026-08-17 16:35 UTCVendor advisory
  39. 2026-08-17 16:35 UTCGHSA enrichment
  40. 2026-08-17 13:47 UTCEPSS rescore
  41. 2026-08-17 05:44 UTCEG score recompute
  42. 2026-08-17 05:44 UTCVendor advisory
  43. 2026-08-17 05:44 UTCGHSA enrichment
  44. 2026-08-17 05:17 UTCEG score recompute
  45. 2026-08-17 05:17 UTCVendor advisory
  46. 2026-08-17 05:17 UTCGHSA enrichment
  47. 2026-08-17 01:00 UTCEG score recompute
  48. 2026-08-17 01:00 UTCVendor advisory
  49. 2026-08-17 01:00 UTCGHSA enrichment
  50. 2026-08-16 14:56 UTCEPSS rescore
  51. 2026-08-16 14:10 UTCVendor advisory
  52. 2026-08-16 14:10 UTCGHSA enrichment
  53. 2026-08-16 03:21 UTCEG score recompute
  54. 2026-08-16 03:21 UTCVendor advisory
  55. 2026-08-16 03:21 UTCGHSA enrichment
  56. 2026-08-15 16:32 UTCVendor advisory
  57. 2026-08-15 16:32 UTCGHSA enrichment
  58. 2026-08-15 05:42 UTCEG score recompute
  59. 2026-08-15 05:42 UTCVendor advisory
  60. 2026-08-15 05:42 UTCGHSA enrichment
  61. 2026-08-15 01:30 UTCEPSS rescore
  62. 2026-08-14 18:52 UTCVendor advisory
  63. 2026-08-14 18:52 UTCGHSA enrichment
  64. 2026-08-14 08:03 UTCEG score recompute
  65. 2026-08-14 08:03 UTCVendor advisory
  66. 2026-08-14 08:03 UTCGHSA enrichment
  67. 2026-08-13 22:00 UTCEPSS rescore
  68. 2026-08-13 21:13 UTCVendor advisory
  69. 2026-08-13 21:13 UTCGHSA enrichment
  70. 2026-08-13 10:24 UTCVendor advisory
  71. 2026-08-13 10:24 UTCGHSA enrichment
  72. 2026-08-12 23:34 UTCEG score recompute
  73. 2026-08-12 23:34 UTCGHSA enrichment
  74. 2026-08-12 13:51 UTCEPSS rescore
  75. 2026-08-12 12:45 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-64413?
CVE-2026-64413 is a high vulnerability published on July 25, 2026. In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: zero chainstack array sashiko reports: looking at ebtables table translation, could a sparse cpupossiblemask lead to an uninitialized pointer free? If cpupossiblemask is sparse (for example, CPU 0 and CPU 2 are…
When was CVE-2026-64413 disclosed?
CVE-2026-64413 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-2026-64413 actively exploited?
CVE-2026-64413 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 97.8% of all scored CVEs.
What is the CVSS score of CVE-2026-64413?
CVE-2026-64413 has a CVSS v3 base score of 7.0 (NVD).
How do I remediate CVE-2026-64413?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64413, 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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