CVE-2026-52918

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-24. the CNA's CVSS baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — Patch released this week
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: serialize accept_q access

bt_sock_poll() walks the accept queue without synchronization, while child teardown can unlink the same socket and drop its last reference. The unsynchronized accept queue walk has existed since the initial Bluetooth import.

Protect accept_q with a dedicated lock for queue updates and polling. Also rework bt_accept_dequeue() to take temporary child references under the queue lock before dropping it and locking the child socket.

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
18%
KEV
Not listed

Published

June 24, 2026

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Jun 28, 2026
No patch confirmed yet.
generic

Bluetooth: serialize accept_q access - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e83f5e24da741fa9405aeeff00b08c5ee7c37b88
generic

Bluetooth: serialize accept_q access - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d9ce4de05df2385c19e2c7d12f529144e1a44af1
generic

Bluetooth: serialize accept_q access - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/be43e6b4043113c3b3cf887c3c8350f67140274c
generic

Bluetooth: serialize accept_q access - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a218bf69eb51fefe59a3976fa8925261141f681c
generic

Bluetooth: serialize accept_q access - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8b4c412e001b0c670eb937beab491af974da55b3
generic

Bluetooth: serialize accept_q access - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/85f8674cae82053f1e6bab295f6a8422cca14db5
generic

Bluetooth: serialize accept_q access - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4ec17782fd186f901a7329605d11048b085b945a
generic

Bluetooth: serialize accept_q access - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/41c8c1c7923e86e0eb59cfb4279349112756a336

Vendor Advisories for CVE-2026-52918(4)

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

Patch Availability(16)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-09-18ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1067.75+fips1) @ noble2026-09-18ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1067.75) @ noble2026-09-18ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-18ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2053.55) @ noble2026-09-18ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-09-18ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1035.38) @ noble2026-09-18ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-09-18ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-09-18ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-09-18ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-09-18ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-09-18ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-09-18ubuntu
ubuntulinux-virtual-6.8 (6.8.0-139.139) @ noble2026-09-18ubuntu
redhatkernel-0:5.14.0-687.47.1.el9_82026-09-14redhat
redhatkernel-0:6.12.0-211.53.1.el10_22026-09-08redhat

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

(5 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (54 versions)5.10.259-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.174-1~deb11u1 (20 versions)6.1.176-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)6.1.176-1—
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—

Additional Vendor Advisories

(14)

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 13× in last 7d / 63× 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 321 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-52918?
CVE-2026-52918 is a high vulnerability published on June 24, 2026. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: serialize accept_q access btsockpoll() walks the accept queue without synchronization, while child teardown can unlink the same socket and drop its last reference. The unsynchronized accept queue walk has existed since…
When was CVE-2026-52918 disclosed?
CVE-2026-52918 was first published in the National Vulnerability Database on June 24, 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-2026-52918 actively exploited?
CVE-2026-52918 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 81.6% of all scored CVEs.
What is the CVSS score of CVE-2026-52918?
CVE-2026-52918 has a CVSS v4.0 base score of 8.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-52918?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-52918, 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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