CVE-2026-64005

HIGHPre-NVD 7.87.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-19. A secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

net/smc: Do not re-initialize smc hashtables

INIT_HLIST_HEAD(&smc_v*_hashinfo.ht) are called after smc_nl_init(), proto_register() and sock_register(). This can lead to smc_v*_hashinfo.ht being reset even though hash entries already exist and are being used, possibly resulting in a corrupted list.

Remove unnecessary and dangerous re-initialisation of smc_v*_hashinfo.ht in smc_init(); it is implicitly initialised to zero anyhow. Add HLIST_HEAD_INIT to the definitions for clarity.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity78% × 45%
Impact severity (EG Severity): CVSS 7.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
below the 1st
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.8): severity, escalated by confirmed exploitation. This CVE's 7.8 is its impact severity (EG Severity), not escalated.

EG Severity
7.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-19). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 19, 2026

Last Modified

October 19, 2026

Advisory Details (8)

Auto-updated Jul 21, 2026
Patch available.
Web page

net/smc: Do not re-initialize smc hashtables - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ed7a758313011885347b854e97cb95903ef3c3f7
Web page

net/smc: Do not re-initialize smc hashtables - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cdc79c05cc375f68ae87b0c74fdaac1a5c93155a
Web page

net/smc: Do not re-initialize smc hashtables - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9e4389b0038781f19f97895186ed941ff8ac1678
Web page

net/smc: Do not re-initialize smc hashtables - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/64c96e497d5ada0b90e99bf58f893aa2b73dcfbc
Web page

net/smc: Do not re-initialize smc hashtables - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5ec939367e700722ffbb1b7cacccbb1a3cf0ebd1
Web page

net/smc: Do not re-initialize smc hashtables - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/55cba6b883b41e5922c00ba9d4e3262131f46f1b
Web page

net/smc: Do not re-initialize smc hashtables - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2006605006e5a4a11d93e1ebdbbe95764d24276f
Web page

net/smc: Do not re-initialize smc hashtables - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0cc9d0ac22d02f1ba1884de5d6de9eaf8b45d82d

Vendor Advisories for CVE-2026-64005(1)

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

Patch Availability(20)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1063.66) @ noble2026-10-19ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.198.208~20.04.1) @ focal2026-10-19ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1070.78) @ noble2026-10-19ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-10-19ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-10-19ubuntu
ubuntulinux-tools-azure-edge (7.0.0-1014.14~24.04.1) @ noble2026-10-19ubuntu
ubuntulinux-tools-oracle-edge (7.0.0-1011.11~24.04.1) @ noble2026-10-19ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1118.128~20.04.1) @ focal2026-10-19ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1114.120~20.04.1) @ focal2026-10-19ubuntu
ubuntulinux-tools-gcp-lts-22.04 (5.15.0.1118.115) @ jammy2026-10-19ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1036.39) @ noble2026-10-19ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1112.112) @ jammy2026-10-19ubuntu
ubuntulinux-tools-gcp-lts-24.04 (6.8.0-1070.78) @ noble2026-10-19ubuntu
ubuntulinux-tools-ibm-edge (6.8.0-1066.67~22.04.1) @ jammy2026-10-19ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1070.78+fips1) @ noble2026-10-19ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-10-19ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-10-19ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-10-19ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16~24.04.1) @ noble2026-10-19ubuntu
ubuntulinux-virtual-6.8 (6.8.0-146.146) @ noble2026-10-19ubuntu

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 rangeFix by version rangeDependents
linux5.10.103-1 ... 5.10.92-2 (54 versions)
  • every version up to 5.10.259-1: fixed in 5.10.259-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)
  • every version up to 6.1.176-1: fixed in 6.1.176-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)
  • every version up to 6.12.94-1: fixed in 6.12.94-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (142 versions)
  • every version up to 7.0.12-1: fixed in 7.0.12-1
—

Weakness Classification(2)

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

All Vendor Advisories

(20)

Data Freshness Timeline

(refreshed 23× in last 7d / 55× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 319 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 219 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-19 21:38 UTCEG score recompute
  2. 2026-10-19 21:38 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  3. 2026-10-19 20:36 UTCEG score recompute
  4. 2026-10-19 20:36 UTCVendor advisory
  5. 2026-10-19 20:36 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  6. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  7. 2026-10-18 03:23 UTCEG score recompute
  8. 2026-10-16 17:23 UTCEG score recompute
  9. 2026-10-16 17:23 UTCVendor advisory
  10. 2026-10-16 17:23 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  11. 2026-10-16 16:43 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  12. 2026-10-16 15:56 UTCEG score recompute
  13. 2026-10-16 15:56 UTCVendor advisory
  14. 2026-10-16 15:56 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  15. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  16. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.1% · below the 1st percentile
  17. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  18. 2026-10-13 14:46 UTCEG score recompute
  19. 2026-10-13 14:46 UTCVendor advisory
  20. 2026-10-13 14:46 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  21. 2026-10-13 11:47 UTCEG score recompute
  22. 2026-10-13 11:47 UTCVendor advisory
  23. 2026-10-13 11:47 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  24. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  25. 2026-10-12 15:48 UTCEG score recompute
Show 75 more
  1. 2026-10-11 19:33 UTCEG score recompute
  2. 2026-10-11 16:48 UTCEG score recompute
  3. 2026-10-11 14:09 UTCEG score recompute
  4. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  6. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  7. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  8. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  9. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  10. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  11. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  12. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  13. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  14. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  15. 2026-10-01 08:46 UTCEG score recompute
  16. 2026-10-01 08:46 UTCVendor advisory
  17. 2026-10-01 08:46 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  18. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  19. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  20. 2026-09-28 07:24 UTCEG score recompute
  21. 2026-09-28 07:24 UTCVendor advisory
  22. 2026-09-28 07:24 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  23. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  24. 2026-09-24 03:39 UTCEG score recompute
  25. 2026-09-24 03:39 UTCVendor advisory
  26. 2026-09-24 03:39 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  27. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  28. 2026-09-23 02:03 UTCEG score recompute
  29. 2026-09-23 02:03 UTCVendor advisory
  30. 2026-09-23 02:03 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  31. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  32. 2026-09-18 04:20 UTCEG score recompute
  33. 2026-09-18 04:20 UTCVendor advisory
  34. 2026-09-18 04:20 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  35. 2026-09-17 05:33 UTCEG score recompute
  36. 2026-09-17 05:33 UTCVendor advisory
  37. 2026-09-17 05:33 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  38. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  39. 2026-09-16 12:59 UTCEG score recompute
  40. 2026-09-16 12:59 UTCVendor advisory
  41. 2026-09-16 12:59 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  42. 2026-09-14 10:56 UTCVendor advisory
  43. 2026-09-14 10:56 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  44. 2026-09-13 22:58 UTCVendor advisory
  45. 2026-09-13 22:58 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  46. 2026-09-13 07:40 UTCVendor advisory
  47. 2026-09-13 07:40 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  48. 2026-09-12 19:42 UTCEG score recompute
  49. 2026-09-12 19:42 UTCVendor advisory
  50. 2026-09-12 19:42 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  51. 2026-09-12 07:17 UTCVendor advisory
  52. 2026-09-12 07:16 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  53. 2026-09-11 18:48 UTCEG score recompute
  54. 2026-09-11 18:48 UTCVendor advisory
  55. 2026-09-11 18:48 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  56. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  57. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  58. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  59. 2026-09-07 23:22 UTCEG score recompute
  60. 2026-09-07 23:21 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  61. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  62. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  63. 2026-09-06 12:58 UTCVendor advisory
  64. 2026-09-06 12:57 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  65. 2026-09-05 21:58 UTCEG score recompute
  66. 2026-09-05 21:58 UTCVendor advisory
  67. 2026-09-05 21:58 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  68. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  69. 2026-09-05 09:58 UTCEG score recompute
  70. 2026-09-05 09:58 UTCVendor advisory
  71. 2026-09-05 09:58 UTCGHSA enrichmentGHSA-hrwp-cv9c-vc93 · GitHub severity HIGH · GitHub CVSS 7.8
  72. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  73. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  74. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  75. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.1% · 2nd percentile

Frequently asked(5)

What is CVE-2026-64005?
CVE-2026-64005 is a high-severity vulnerability; its CVE record was published on July 19, 2026. In the Linux kernel, the following vulnerability has been resolved: net/smc: Do not re-initialize smc hashtables INITHLISTHEAD(&smcv*hashinfo.ht) are called after smcnlinit(), protoregister() and sockregister(). This can lead to smcv*hashinfo.ht being reset even though hash entries already exist…
When was the CVE record for CVE-2026-64005 published?
The CVE record for CVE-2026-64005 was published on July 19, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 19, 2026; the record at its source may have been updated since.
Is CVE-2026-64005 actively exploited?
CVE-2026-64005 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (below the 1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-64005?
CVE-2026-64005 has a CVSS base score of 7.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-64005?
A fix for CVE-2026-64005 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-64005 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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