CVE-2026-46189

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-28. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 6 sources updated this week
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

A fix is available — apply it.

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

RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path

Sashiko points out that pvrdma_uar_free() is already called within pvrdma_dealloc_ucontext(), so calling it before triggers a double free.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
4.1%
KEV
Not listed

Published

May 28, 2026

Last Modified

July 15, 2026

Advisory Details (8)

Auto-updated Jun 11, 2026
No patch confirmed yet.
generic

RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ecc36a82ecfcfdf3c6606d209f22ec5543c410e0
generic

RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e38e86995df27f1f854063dab1f0c6a513db3faf
generic

RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/935ee27d0904aa944cbcc979094c20e5ef62eead
generic

RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/45d25e3ec17900bf5a9d6876ff16ceee31c4c0e0
generic

RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3a231c34c5bc3d3cfc850b877758ec9fdaa8a483
generic

RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/269967d7693304e1f06ed2dff4ebbbeeb397cda4
generic

RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1df5711121cdc11e76b889408fdbe459feba1d39
generic

RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0c63333ff97bd1275294fd12840a0efe9d7a4c59

Vendor Advisories for CVE-2026-46189(11)

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

Patch Availability(7)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:5.14.0-427.136.1.el9_42026-07-08redhat
redhatkernel-0:5.14.0-284.179.1.el9_22026-07-07redhat
redhatkernel-rt-0:4.18.0-553.139.1.rt7.480.el8_102026-07-07redhat
redhatkernel-rt-0:5.14.0-284.179.1.rt14.464.el9_22026-07-06redhat
redhatkernel-0:6.12.0-211.29.1.el10_22026-06-30redhat
redhatkernel-0:4.18.0-553.139.1.el8_102026-06-30redhat
redhatkernel-0:5.14.0-687.19.1.el9_82026-06-29redhat

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.

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 100× 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 161 total refreshes for this CVE.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 02:26 UTCNVD updateCVSS v3 → 7.8
  3. 2026-07-15 02:00 UTCEPSS rescore
  4. 2026-07-15 01:21 UTCMITRE cvelistV5CVSS v3 → 7
  5. 2026-07-14 13:19 UTCNVD updateCVSS v3 → 7.8
  6. 2026-07-14 12:10 UTCMITRE cvelistV5CVSS v3 → 7
  7. 2026-07-13 22:30 UTCEPSS rescore
  8. 2026-07-13 06:13 UTCEPSS rescore
  9. 2026-07-12 05:46 UTCEPSS rescore
  10. 2026-07-11 21:15 UTCEG score recompute
  11. 2026-07-11 21:15 UTCVendor advisory
  12. 2026-07-11 21:15 UTCGHSA enrichment
  13. 2026-07-11 08:27 UTCEPSS rescore
  14. 2026-07-09 19:10 UTCEPSS rescore
  15. 2026-07-09 13:52 UTCNVD updateCVSS v3 → 7.8
  16. 2026-07-09 12:25 UTCMITRE cvelistV5CVSS v3 → 7
  17. 2026-07-08 18:20 UTCEG score recompute
  18. 2026-07-08 18:20 UTCVendor advisory
  19. 2026-07-08 18:20 UTCGHSA enrichment
  20. 2026-07-08 15:16 UTCEPSS rescore
  21. 2026-07-07 14:14 UTCNVD updateCVSS v3 → 7.8
  22. 2026-07-07 13:46 UTCEPSS rescore
  23. 2026-07-07 12:11 UTCMITRE cvelistV5CVSS v3 → 7
  24. 2026-07-06 02:23 UTCEPSS rescore
  25. 2026-07-05 02:30 UTCEPSS rescore
Show 75 more
  1. 2026-07-04 06:31 UTCEPSS rescore
  2. 2026-07-02 14:14 UTCEG score recompute
  3. 2026-07-02 14:14 UTCVendor advisory
  4. 2026-07-02 14:14 UTCGHSA enrichment
  5. 2026-07-01 15:07 UTCEPSS rescore
  6. 2026-07-01 14:05 UTCEG score recompute
  7. 2026-07-01 14:05 UTCVendor advisory
  8. 2026-07-01 14:05 UTCGHSA enrichment
  9. 2026-07-01 03:06 UTCEG score recompute
  10. 2026-07-01 03:06 UTCVendor advisory
  11. 2026-07-01 03:06 UTCGHSA enrichment
  12. 2026-06-30 23:22 UTCEPSS rescore
  13. 2026-06-30 04:33 UTCNVD updateCVSS v3 → 7.8 · severity → HIGH
  14. 2026-06-30 01:59 UTCEG score recompute
  15. 2026-06-30 01:59 UTCVendor advisory
  16. 2026-06-30 01:59 UTCGHSA enrichment
  17. 2026-06-29 14:06 UTCEPSS rescore
  18. 2026-06-29 14:06 UTCEPSS rescore
  19. 2026-06-29 13:44 UTCEG score recompute
  20. 2026-06-29 13:44 UTCVendor advisory
  21. 2026-06-29 13:44 UTCGHSA enrichment
  22. 2026-06-28 16:27 UTCEG score recompute
  23. 2026-06-28 16:27 UTCVendor advisory
  24. 2026-06-28 16:27 UTCGHSA enrichment
  25. 2026-06-28 14:07 UTCEPSS rescore
  26. 2026-06-28 05:10 UTCEG score recompute
  27. 2026-06-28 05:10 UTCVendor advisory
  28. 2026-06-28 05:10 UTCGHSA enrichment
  29. 2026-06-28 04:56 UTCEPSS rescore
  30. 2026-06-28 04:56 UTCEPSS rescore
  31. 2026-06-27 18:14 UTCEG score recompute
  32. 2026-06-27 18:14 UTCVendor advisory
  33. 2026-06-27 18:14 UTCGHSA enrichment
  34. 2026-06-27 05:27 UTCEG score recompute
  35. 2026-06-27 05:27 UTCVendor advisory
  36. 2026-06-27 05:27 UTCGHSA enrichment
  37. 2026-06-27 03:08 UTCEPSS rescore
  38. 2026-06-26 16:51 UTCEG score recompute
  39. 2026-06-26 16:51 UTCVendor advisory
  40. 2026-06-26 16:51 UTCGHSA enrichment
  41. 2026-06-25 20:36 UTCEG score recompute
  42. 2026-06-25 20:36 UTCVendor advisory
  43. 2026-06-25 20:36 UTCGHSA enrichment
  44. 2026-06-25 13:49 UTCEPSS rescore
  45. 2026-06-25 09:38 UTCEG score recompute
  46. 2026-06-25 09:38 UTCVendor advisory
  47. 2026-06-25 09:38 UTCGHSA enrichment
  48. 2026-06-24 22:42 UTCEG score recompute
  49. 2026-06-24 22:42 UTCVendor advisory
  50. 2026-06-24 22:42 UTCGHSA enrichment
  51. 2026-06-24 14:05 UTCEPSS rescore
  52. 2026-06-23 21:33 UTCEPSS rescore
  53. 2026-06-23 21:33 UTCEPSS rescore
  54. 2026-06-22 14:25 UTCEPSS rescore
  55. 2026-06-22 14:25 UTCEPSS rescore
  56. 2026-06-21 14:56 UTCEPSS rescore
  57. 2026-06-21 14:56 UTCEPSS rescore
  58. 2026-06-21 01:59 UTCEPSS rescore
  59. 2026-06-21 01:59 UTCEPSS rescore
  60. 2026-06-19 19:26 UTCEPSS rescore
  61. 2026-06-19 19:26 UTCEPSS rescore
  62. 2026-06-18 17:52 UTCEPSS rescore
  63. 2026-06-18 17:52 UTCEPSS rescore
  64. 2026-06-18 01:27 UTCEG score recompute
  65. 2026-06-18 01:27 UTCVendor advisory
  66. 2026-06-18 01:26 UTCGHSA enrichment
  67. 2026-06-17 17:53 UTCEPSS rescore
  68. 2026-06-17 13:34 UTCEG score recompute
  69. 2026-06-17 13:34 UTCGHSA enrichment
  70. 2026-06-17 02:38 UTCEG score recompute
  71. 2026-06-17 02:38 UTCGHSA enrichment
  72. 2026-06-16 17:52 UTCEPSS rescore
  73. 2026-06-16 15:42 UTCEG score recompute
  74. 2026-06-16 15:42 UTCVendor advisory
  75. 2026-06-16 15:42 UTCGHSA enrichment

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-46189?
CVE-2026-46189 is a high vulnerability published on May 28, 2026. In the Linux kernel, the following vulnerability has been resolved: RDMA/vmwpvrdma: Fix double free on pvrdmaalloc_ucontext() error path Sashiko points out that pvrdmauarfree() is already called within pvrdmadeallocucontext(), so calling it before triggers a double free.
When was CVE-2026-46189 disclosed?
CVE-2026-46189 was first published in the National Vulnerability Database on May 28, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46189 actively exploited?
CVE-2026-46189 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-46189?
CVE-2026-46189 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-46189?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46189, 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

Explore the affected products and dependency analysis for CVE-2026-46189

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