CVE-2026-64218

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-24. 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:

batman-adv: bla: fix report_work leak on backbone_gw purge

batadv_bla_purge_backbone_gw() removes stale backbone gateway entries, but fails to properly handle their associated report_work:

  • If report_work is running, the purge must wait for it to finish before
freeing the backbone_gw, otherwise the worker may access freed memory (e.g. bat_priv).
  • If report_work is pending, the purge must cancel it and release the
reference held for that pending work item.

The previous implementation called hlist_for_each_entry_safe() inside a spin_lock_bh() section, but cancel_work_sync() may sleep and therefore cannot be called from within a spinlock-protected region.

Restructure the loop to handle one entry per spinlock critical section: acquire the lock, find the next entry to purge, remove it from the hash list, then release the lock before calling cancel_work_sync() and dropping the hash_entry reference. Repeat until no more entries require purging.

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 24, 2026

Last Modified

August 11, 2026

Advisory Details (8)

Auto-updated Jul 27, 2026
No patch confirmed yet.
generic

batman-adv: bla: fix report_work leak on backbone_gw purge - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f1303adb1e59582f76c22798a2e2e150e054a9e7
generic

batman-adv: bla: fix report_work leak on backbone_gw purge - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/eeddd7bab3d59c1e98642a204141f8c5d6194707
generic

batman-adv: bla: fix report_work leak on backbone_gw purge - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ce2c0ee4d76d5ee4b391fe0e31334361e25030ec
generic

batman-adv: bla: fix report_work leak on backbone_gw purge - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c6de1a5a9c406e30b91f1515a6ce05cc84023baa
generic

batman-adv: bla: fix report_work leak on backbone_gw purge - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/95a7034661274cf5985708bd2f6d86ee46f88fa9
generic

batman-adv: bla: fix report_work leak on backbone_gw purge - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/48663158222b3b7f6ee6791a67d512ede7fc94bb
generic

batman-adv: bla: fix report_work leak on backbone_gw purge - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3423a45e5c3d3c5129f88143a9a969787d7d5a0a
generic

batman-adv: bla: fix report_work leak on backbone_gw purge - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0459430add32ea41f3e2ef9351610e6d33627a6b

Vendor Advisories for CVE-2026-64218(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-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-08-30ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-08-30ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-08-30ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-08-30ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-08-30ubuntu
ubuntulinux-tools-intel-iotg-5.15 (5.15.0.1107.106) @ jammy2026-08-30ubuntu

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
linux5.10.103-1 ... 5.10.92-2 (54 versions)5.10.259-1—
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 (138 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 31× in last 7d / 168× 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 198 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-64218?
CVE-2026-64218 is a high vulnerability published on July 24, 2026. In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: fix reportwork leak on backbonegw purge batadvblapurgebackbonegw() removes stale backbone gateway entries, but fails to properly handle their associated report_work: If report_work is running, the purge must wait…
When was CVE-2026-64218 disclosed?
CVE-2026-64218 was first published in the National Vulnerability Database on July 24, 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-2026-64218 actively exploited?
CVE-2026-64218 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-2026-64218?
CVE-2026-64218 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-64218?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64218, 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-2026-64218

Explore →

Is Your Infrastructure Affected by CVE-2026-64218?

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

Start Free Scan →Browse All CVEs