CVE-2026-64182

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-07-19. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

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

drivers/base/memory: fix memory block reference leak in poison accounting

memblk_nr_poison_inc() and memblk_nr_poison_sub() look up a memory block via find_memory_block_by_id(), which acquires a reference to the memory block device.

Both helpers use the returned memory block without dropping that reference, leaking the device reference on each successful lookup. Drop the reference after updating nr_hwpoison.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

July 19, 2026

Last Modified

August 11, 2026

Advisory Details (5)

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

drivers/base/memory: fix memory block reference leak in poison accounting - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ce60d9452a0f2effa72fd20ea270c59ca691d455
generic

drivers/base/memory: fix memory block reference leak in poison accounting - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8502e2c2d0633f99d94d22ae8dabc10caae1fc2a
generic

drivers/base/memory: fix memory block reference leak in poison accounting - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/686b4283f82cd630fafd7ca9b03dfc080b3ec8fa
generic

drivers/base/memory: fix memory block reference leak in poison accounting - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/24840b3139d7415144b81e4f9f4c44670d15bed9
generic

drivers/base/memory: fix memory block reference leak in poison accounting - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/03a2cc1756a0570f887d624cd6c535ea0cbd4951

Vendor Advisories for CVE-2026-64182(1)

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

Patch Availability(8)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-09-18ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-18ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-09-18ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-09-18ubuntu
ubuntulinux-virtual-6.8 (6.8.0-139.139) @ noble2026-09-18ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-09-18ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-09-18ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1067.75) @ noble2026-09-18ubuntu

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

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)6.12.94-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (141 versions)7.0.12-1—

All Vendor Advisories

(8)

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 10× in last 7d / 69× 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 1,011 total refreshes for this CVE.

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

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2026-64182?
CVE-2026-64182 is a medium vulnerability published on July 19, 2026. In the Linux kernel, the following vulnerability has been resolved: drivers/base/memory: fix memory block reference leak in poison accounting memblknrpoisoninc() and memblknrpoisonsub() look up a memory block via findmemoryblockbyid(), which acquires a reference to the memory block device. Both…
When was CVE-2026-64182 disclosed?
CVE-2026-64182 was first published in the National Vulnerability Database on July 19, 2026, with the most recent update on August 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64182 actively exploited?
CVE-2026-64182 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 98.3% of all scored CVEs.
What is the CVSS score of CVE-2026-64182?
CVE-2026-64182 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-64182?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64182, 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-2026-64182

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