CVE-2026-46212

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-28. the CNA's CVSS baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
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:

batman-adv: bla: prevent use-after-free when deleting claims

When batadv_bla_del_backbone_claims() removes all claims for a backbone, it does this by dropping the link entry in the hash list. This list entry itself was one of the references which need to be dropped at the same time via batadv_claim_put().

But the batadv_claim_put() must not be done before the last access to the claim object in this function. Otherwise the claim might be freed already by the batadv_claim_release() function before the list entry was dropped.

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
19%
KEV
Not listed

Published

May 28, 2026

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Jun 1, 2026
No patch confirmed yet.
generic

batman-adv: bla: prevent use-after-free when deleting claims - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b88c865dcf6e9f20bfe66a360d4b62941ef769b8
generic

batman-adv: bla: prevent use-after-free when deleting claims - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a1a99837bb6169cfb9187abaa2005e8f12079426
generic

batman-adv: bla: prevent use-after-free when deleting claims - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6c5dc6d68e6ba7f0224a757a39ed52fcdb54d472
generic

batman-adv: bla: prevent use-after-free when deleting claims - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4ae1709a314060a196981b344610d023ea841e57
generic

batman-adv: bla: prevent use-after-free when deleting claims - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/368449e467d5f1e2c2e987bf2bd57000ba75e10b
generic

batman-adv: bla: prevent use-after-free when deleting claims - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1d4b241482d9025c537afb3c7c8419c72c0e0c82
generic

batman-adv: bla: prevent use-after-free when deleting claims - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0cc9847c64cb6e61118bc78c9187c8209a7197fa
generic

batman-adv: bla: prevent use-after-free when deleting claims - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/00155f336a5e8b1006d2ca9ae7ad8fc4a44bb401

Vendor Advisories for CVE-2026-46212(2)

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

Patch Availability(30)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-08-25ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-08-25ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-08-25ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-08-25ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-08-25ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-08-25ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-08-25ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-08-25ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-08-25ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1058.61) @ noble2026-08-25ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-08-25ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-08-25ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-08-25ubuntu
ubuntulinux-tools-ibm-edge (5.15.0.1106.110~20.04.1) @ focal2026-08-25ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-08-25ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-08-25ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-08-25ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-08-25ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-08-25ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-08-25ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-08-25ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-08-25ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-08-25ubuntu

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 ... 6.12.90-1~bpo12+1 (23 versions)6.12.90-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (135 versions)7.0.9-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(24)

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 5× in last 7d / 87× 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 283 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-46212?
CVE-2026-46212 is a high vulnerability published on May 28, 2026. In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: prevent use-after-free when deleting claims When batadvbladelbackboneclaims() removes all claims for a backbone, it does this by dropping the link entry in the hash list. This list entry itself was one of the…
When was CVE-2026-46212 disclosed?
CVE-2026-46212 was first published in the National Vulnerability Database on May 28, 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-2026-46212 actively exploited?
CVE-2026-46212 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 80.6% of all scored CVEs.
What is the CVSS score of CVE-2026-46212?
CVE-2026-46212 has a CVSS v4.0 base score of 8.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-46212?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46212, 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-2026-46212

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