CVE-2026-64373

MEDIUMNVD 4.74.7—
EchelonGraph scoreMEDIUM confidence

Score 4.7 from GitHub Security Advisory published 2026-07-25. NVD baseline CVSS 4.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
4.7EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.7Exploit: None knownExposed: 0

A fix is available — apply it.

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

cpufreq: Fix hotplug-suspend race during reboot

During system reboot, cpufreq_suspend() is called via the kernel_restart() -> device_shutdown() path. Unlike the normal system suspend path, the reboot path does not call freeze_processes(), so userspace processes and kernel threads remain active.

This allows CPU hotplug operations to run concurrently with cpufreq_suspend(). The original code has no synchronization with CPU hotplug, leading to a race condition where governor_data can be freed by the hotplug path while cpufreq_suspend() is still accessing it, resulting in a null pointer dereference:

Unable to handle kernel NULL pointer dereference Call Trace: do_kernel_fault+0x28/0x3c cpufreq_suspend+0xdc/0x160 device_shutdown+0x18/0x200 kernel_restart+0x40/0x80 arm64_sys_reboot+0x1b0/0x200

Fix this by adding cpus_read_lock()/cpus_read_unlock() to cpufreq_suspend() to block CPU hotplug operations while suspend is in progress.

[ rjw: Changelog edits ]

CVSS v3
4.7
EG Score
4.7(medium)
EG Risk
26(Track)
EG Risk 26/100SSVC: 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
Severity47% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
0%
KEV
Not listed

Published

July 25, 2026

Last Modified

September 8, 2026

Advisory Details (8)

Auto-updated Sep 8, 2026
No patch confirmed yet.
generic

cpufreq: Fix hotplug-suspend race during reboot - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cd4524ff6567fa4458a5bec4b017105e671d393e
generic

cpufreq: Fix hotplug-suspend race during reboot - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a9029dd55696c651ee46912afa2a166fa456bb3e
generic

cpufreq: Fix hotplug-suspend race during reboot - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a0ef2fc89d28ca62923376c4b8ffaa57136a36be
generic

cpufreq: Fix hotplug-suspend race during reboot - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a0106b41f9a724868d390b8b3b4ea5ca0e04ea53
generic

cpufreq: Fix hotplug-suspend race during reboot - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9103078c7b3091a2fbb52af176f95982ee7dd7f8
generic

cpufreq: Fix hotplug-suspend race during reboot - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/73255d702c7560185fd5951aadcf7eb057c2f453
generic

cpufreq: Fix hotplug-suspend race during reboot - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6e175c00c62dca3d91b987015808b5d52e8db2b4
generic

cpufreq: Fix hotplug-suspend race during reboot - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6d5dd354c37abaf4d60400c55c71f23ba2b33639

Vendor Advisories for CVE-2026-64373(2)

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-virtual-hwe-26.04-edge (7.0.0-31.31) @ resolute2026-09-20ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-20ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1019.19) @ resolute2026-09-20ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1013.13) @ resolute2026-09-20ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1018.18~24.04.1) @ noble2026-09-20ubuntu

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

(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 ... 6.12.95-1~bpo12+1 (30 versions)6.12.96-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (158 versions)7.1.4-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(5)

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 16× in last 7d / 57× 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 109 total refreshes for this CVE.

  1. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-20 01:26 UTCEG score recompute
  3. 2026-09-20 01:26 UTCVendor advisory
  4. 2026-09-20 01:25 UTCGHSA enrichment
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-18 02:47 UTCEG score recompute
  7. 2026-09-18 02:47 UTCVendor advisory
  8. 2026-09-18 02:47 UTCGHSA enrichment
  9. 2026-09-16 14:08 UTCEPSS rescore
  10. 2026-09-16 11:56 UTCEG score recompute
  11. 2026-09-16 11:56 UTCVendor advisory
  12. 2026-09-16 11:56 UTCGHSA enrichment
  13. 2026-09-16 05:15 UTCEPSS rescore
  14. 2026-09-15 09:24 UTCEG score recompute
  15. 2026-09-15 09:24 UTCVendor advisory
  16. 2026-09-15 09:24 UTCGHSA enrichment
  17. 2026-09-13 17:26 UTCEG score recompute
  18. 2026-09-13 17:26 UTCVendor advisory
  19. 2026-09-13 17:26 UTCGHSA enrichment
  20. 2026-09-12 16:55 UTCEG score recompute
  21. 2026-09-12 16:55 UTCVendor advisory
  22. 2026-09-12 16:55 UTCGHSA enrichment
  23. 2026-09-11 16:23 UTCEG score recompute
  24. 2026-09-11 16:23 UTCVendor advisory
  25. 2026-09-11 16:23 UTCGHSA enrichment
Show 75 more
  1. 2026-09-11 14:53 UTCEPSS rescore
  2. 2026-09-11 09:37 UTCEPSS rescore
  3. 2026-09-10 13:20 UTCEG score recompute
  4. 2026-09-10 13:20 UTCVendor advisory
  5. 2026-09-10 13:20 UTCGHSA enrichment
  6. 2026-09-08 15:28 UTCEG score recompute▲ 4.70
  7. 2026-09-08 15:28 UTCVendor advisory
  8. 2026-09-08 15:27 UTCGHSA enrichment
  9. 2026-09-08 15:27 UTCNVD updateCVSS v3 → 4.7 · severity → MEDIUM
  10. 2026-09-07 21:16 UTCVendor advisory
  11. 2026-09-07 21:16 UTCGHSA enrichment
  12. 2026-09-07 16:01 UTCEPSS rescore
  13. 2026-09-06 13:47 UTCEPSS rescore
  14. 2026-09-05 15:31 UTCEPSS rescore
  15. 2026-09-04 12:41 UTCVendor advisory
  16. 2026-09-04 12:41 UTCGHSA enrichment
  17. 2026-09-04 05:07 UTCEPSS rescore
  18. 2026-09-02 14:12 UTCEPSS rescore
  19. 2026-09-01 13:54 UTCEPSS rescore
  20. 2026-09-01 04:40 UTCEPSS rescore
  21. 2026-08-30 19:17 UTCEPSS rescore
  22. 2026-08-30 01:22 UTCEPSS rescore
  23. 2026-08-30 00:07 UTCVendor advisory
  24. 2026-08-30 00:07 UTCGHSA enrichment
  25. 2026-08-28 21:42 UTCEPSS rescore
  26. 2026-08-26 19:50 UTCVendor advisory
  27. 2026-08-26 19:50 UTCGHSA enrichment
  28. 2026-08-26 14:47 UTCEPSS rescore
  29. 2026-08-25 13:49 UTCEPSS rescore
  30. 2026-08-23 12:44 UTCVendor advisory
  31. 2026-08-23 12:44 UTCGHSA enrichment
  32. 2026-08-23 00:19 UTCEPSS rescore
  33. 2026-08-21 23:49 UTCEPSS rescore
  34. 2026-08-20 22:55 UTCEPSS rescore
  35. 2026-08-20 09:02 UTCVendor advisory
  36. 2026-08-20 09:02 UTCGHSA enrichment
  37. 2026-08-19 17:04 UTCEPSS rescore
  38. 2026-08-18 13:48 UTCEPSS rescore
  39. 2026-08-17 13:47 UTCEPSS rescore
  40. 2026-08-17 05:25 UTCNVD update
  41. 2026-08-17 05:19 UTCVendor advisory
  42. 2026-08-17 05:19 UTCGHSA enrichment
  43. 2026-08-17 05:05 UTCMITRE cvelistV5
  44. 2026-08-16 14:56 UTCEPSS rescore
  45. 2026-08-15 01:30 UTCEPSS rescore
  46. 2026-08-14 18:50 UTCVendor advisory
  47. 2026-08-14 18:50 UTCGHSA enrichment
  48. 2026-08-13 22:00 UTCEPSS rescore
  49. 2026-08-12 13:51 UTCEPSS rescore
  50. 2026-08-11 15:07 UTCVendor advisory
  51. 2026-08-11 15:07 UTCGHSA enrichment
  52. 2026-08-11 00:00 UTCEPSS rescore
  53. 2026-08-10 21:27 UTCGHSA enrichment
  54. 2026-08-09 13:47 UTCEPSS rescore
  55. 2026-08-08 16:37 UTCEPSS rescore
  56. 2026-08-07 17:44 UTCVendor advisory
  57. 2026-08-07 17:44 UTCGHSA enrichment
  58. 2026-08-06 13:47 UTCEPSS rescore
  59. 2026-08-05 19:17 UTCEPSS rescore
  60. 2026-08-05 19:17 UTCEPSS rescore
  61. 2026-08-04 15:10 UTCEPSS rescore
  62. 2026-08-04 14:01 UTCGHSA enrichment
  63. 2026-08-04 10:39 UTCEPSS rescore
  64. 2026-08-03 10:36 UTCEPSS rescore
  65. 2026-08-02 02:27 UTCEPSS rescore
  66. 2026-08-01 10:17 UTCEG score recompute
  67. 2026-08-01 10:17 UTCGHSA enrichment
  68. 2026-08-01 04:16 UTCEPSS rescore
  69. 2026-07-30 16:28 UTCEPSS rescore
  70. 2026-07-30 01:30 UTCEPSS rescore
  71. 2026-07-30 01:30 UTCEPSS rescore
  72. 2026-07-29 06:34 UTCEG score recompute
  73. 2026-07-29 06:34 UTCGHSA enrichment
  74. 2026-07-28 15:37 UTCEPSS rescore
  75. 2026-07-27 14:14 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-64373?
CVE-2026-64373 is a medium vulnerability published on July 25, 2026. In the Linux kernel, the following vulnerability has been resolved: cpufreq: Fix hotplug-suspend race during reboot During system reboot, cpufreq_suspend() is called via the kernelrestart() -> deviceshutdown() path. Unlike the normal system suspend path, the reboot path does not call…
When was CVE-2026-64373 disclosed?
CVE-2026-64373 was first published in the National Vulnerability Database on July 25, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64373 actively exploited?
CVE-2026-64373 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 99.5% of all scored CVEs.
What is the CVSS score of CVE-2026-64373?
CVE-2026-64373 has a CVSS v3 base score of 4.7 (NVD).
How do I remediate CVE-2026-64373?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64373, 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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