CVE-2026-43018

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-01. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

A fix is available — apply it.

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

Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt

hci_conn lookup and field access must be covered by hdev lock in hci_le_remote_conn_param_req_evt, otherwise it's possible it is freed concurrently.

Extend the hci_dev_lock critical section to cover all conn usage.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

May 1, 2026

Last Modified

August 5, 2026

Advisory Details (6)

Auto-updated May 3, 2026
No patch confirmed yet.
generic

Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ea3cd36d7382d5f8309df04c275d20df139ed42c
generic

Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b255531b27da336571411248c2a72a350662bd09
generic

Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7cadb03be37e761130edb153544fe0770a842b19
generic

Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5fb69e1eeea9d6cba80517e9f058b56b34bc3a81
generic

Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/59eecf0ffde15670e6a5e10c47be67f73d843b20
generic

Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1d0bdbfe3e91c11f0a704c52443a9446a10d699c

Patch Availability(15)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-08-23ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-08-23ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-08-23ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-08-23ubuntu
ubuntulinux-tools-aws-edge (6.8.0-1061.64~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1058.61) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-23ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-08-23ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-08-23ubuntu
linuxKernel @ 6.1.168—osv

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 rangeFixed inDependents
linux-6.16.1.106-3~deb11u1 ... 6.1.164-1~deb11u1 (16 versions)6.1.170-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (48 versions)6.1.170-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.85-1~bpo12+1 (17 versions)6.12.85-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.19~rc8-1~exp1 (125 versions)6.19.12-1—

Weakness Classification(1)

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

All Vendor Advisories

(14)

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 7× in last 7d / 31× 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 223 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-43018?
CVE-2026-43018 is a high vulnerability published on May 1, 2026. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcievent: fix potential UAF in hcileremoteconnparamreq_evt hci_conn lookup and field access must be covered by hdev lock in hcileremoteconnparamreqevt, otherwise it's possible it is freed concurrently. Extend the…
When was CVE-2026-43018 disclosed?
CVE-2026-43018 was first published in the National Vulnerability Database on May 1, 2026, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43018 actively exploited?
CVE-2026-43018 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 82.7% of all scored CVEs.
What is the CVSS score of CVE-2026-43018?
CVE-2026-43018 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-43018?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43018, 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-2026-43018

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