CVE-2026-64082

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

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, ghsa, secondary
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

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

riscv: Fix register corruption from uninitialized cregs on error

compat_riscv_gpr_set() calls cregs_to_regs() unconditionally, even when user_regset_copyin() fails. Since cregs is an uninitialized stack variable, a copyin failure causes uninitialized stack data to be written into the target task's pt_regs, corrupting its register state and potentially leaking kernel stack contents.

compat_restore_sigcontext() has the same issue: it calls cregs_to_regs() even when __copy_from_user() fails, leading to the same corruption of the signal-returning task's register state on error.

Only call cregs_to_regs() when the user copy succeeds.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

July 19, 2026

Last Modified

September 3, 2026

Advisory Details (2)

Auto-updated Jul 21, 2026
No patch confirmed yet.
generic

riscv: Fix register corruption from uninitialized cregs on error - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9e020156833f1ad0d425a1e3d85b65639f1c1c50
generic

riscv: Fix register corruption from uninitialized cregs on error - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6ebcbb53fc9bc30843054ed99fd60b8e542628f4

Vendor Advisories for CVE-2026-64082(2)

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

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-09-11ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-09-11ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-09-11ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-09-11ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-09-11ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-11ubuntu

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

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (56 versions)6.1.187-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.2~rc7-1~exp1 (176 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (141 versions)7.0.12-1—

Weakness Classification(1)

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

All Vendor Advisories

(6)

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 20× in last 7d / 118× 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 228 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-64082?
CVE-2026-64082 is a high vulnerability published on July 19, 2026. In the Linux kernel, the following vulnerability has been resolved: riscv: Fix register corruption from uninitialized cregs on error compatriscvgprset() calls cregsto_regs() unconditionally, even when userregsetcopyin() fails. Since cregs is an uninitialized stack variable, a copyin failure causes…
When was CVE-2026-64082 disclosed?
CVE-2026-64082 was first published in the National Vulnerability Database on July 19, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64082 actively exploited?
CVE-2026-64082 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 97.1% of all scored CVEs.
What is the CVSS score of CVE-2026-64082?
CVE-2026-64082 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-64082?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64082, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-64082

Explore →

Is Your Infrastructure Affected by CVE-2026-64082?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs