CVE-2026-23412

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-04-02. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
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

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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

netfilter: bpf: defer hook memory release until rcu readers are done

Yiming Qian reports UaF when concurrent process is dumping hooks via nfnetlink_hooks:

BUG: KASAN: slab-use-after-free in nfnl_hook_dump_one.isra.0+0xe71/0x10f0 Read of size 8 at addr ffff888003edbf88 by task poc/79 Call Trace: nfnl_hook_dump_one.isra.0+0xe71/0x10f0 netlink_dump+0x554/0x12b0 nfnl_hook_get+0x176/0x230 [..]

Defer release until after concurrent readers have completed.

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
2%
KEV
Not listed

Published

April 2, 2026

Last Modified

August 5, 2026

Advisory Details (5)

Auto-updated Jun 10, 2026
No patch confirmed yet.
generic

netfilter: bpf: defer hook memory release until rcu readers are done - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d016c216bc75c45128160593a77b864a04dbe7c0
generic

netfilter: bpf: defer hook memory release until rcu readers are done - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cb2bf5efdb02a2a59faf603604a1066e8266f349
generic

netfilter: bpf: defer hook memory release until rcu readers are done - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c25e0dec366ae99b7264324ce3c7cbaea34691f9
generic

netfilter: bpf: defer hook memory release until rcu readers are done - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/54244d54a971c26a0cd0a9073460ff71f3c51b32
generic

netfilter: bpf: defer hook memory release until rcu readers are done - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/24f90fa3994b992d1a09003a3db2599330a5232a

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 6.6.130—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

(2 across 2 ecosystems)
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 (122 versions)6.19.10-1—

Weakness Classification(1)

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

All Vendor Advisories

(13)

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 5× in last 7d / 27× 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 205 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 14:52 UTCEPSS rescore
  4. 2026-09-10 09:34 UTCEPSS rescore
  5. 2026-09-08 22:00 UTCEPSS rescore
  6. 2026-09-07 16:01 UTCEPSS rescore
  7. 2026-09-06 13:47 UTCEPSS rescore
  8. 2026-09-06 13:47 UTCEPSS rescore
  9. 2026-09-04 05:06 UTCEPSS rescore
  10. 2026-09-02 14:11 UTCEPSS rescore
  11. 2026-09-02 11:34 UTCOSV refresh
  12. 2026-09-01 13:53 UTCEPSS rescore
  13. 2026-09-01 04:39 UTCEPSS rescore
  14. 2026-08-30 19:17 UTCEPSS rescore
  15. 2026-08-30 01:22 UTCEPSS rescore
  16. 2026-08-28 21:41 UTCEPSS rescore
  17. 2026-08-27 14:25 UTCEPSS rescore
  18. 2026-08-26 14:46 UTCEPSS rescore
  19. 2026-08-25 13:48 UTCEPSS rescore
  20. 2026-08-21 23:49 UTCEPSS rescore
  21. 2026-08-20 22:55 UTCEPSS rescore
  22. 2026-08-19 17:03 UTCEPSS rescore
  23. 2026-08-17 13:47 UTCEPSS rescore
  24. 2026-08-16 14:56 UTCEPSS rescore
  25. 2026-08-16 09:26 UTCEG score recompute
Show 75 more
  1. 2026-08-16 09:26 UTCVendor advisory
  2. 2026-08-16 09:26 UTCGHSA enrichment
  3. 2026-08-16 02:14 UTCEPSS rescore
  4. 2026-08-15 01:30 UTCEPSS rescore
  5. 2026-08-14 19:01 UTCVendor advisory
  6. 2026-08-14 19:01 UTCGHSA enrichment
  7. 2026-08-14 05:51 UTCEG score recompute
  8. 2026-08-14 05:51 UTCVendor advisory
  9. 2026-08-14 05:51 UTCGHSA enrichment
  10. 2026-08-13 22:00 UTCEPSS rescore
  11. 2026-08-13 10:00 UTCVendor advisory
  12. 2026-08-13 10:00 UTCGHSA enrichment
  13. 2026-08-12 20:09 UTCEG score recompute
  14. 2026-08-12 20:09 UTCVendor advisory
  15. 2026-08-12 20:09 UTCGHSA enrichment
  16. 2026-08-12 13:50 UTCEPSS rescore
  17. 2026-08-11 20:30 UTCEG score recompute
  18. 2026-08-11 20:30 UTCVendor advisory
  19. 2026-08-11 20:30 UTCGHSA enrichment
  20. 2026-08-11 13:42 UTCEPSS rescore
  21. 2026-08-11 03:31 UTCEG score recompute
  22. 2026-08-11 03:31 UTCVendor advisory
  23. 2026-08-11 03:31 UTCGHSA enrichment
  24. 2026-08-11 00:00 UTCEPSS rescore
  25. 2026-08-10 07:37 UTCVendor advisory
  26. 2026-08-10 07:37 UTCGHSA enrichment
  27. 2026-08-09 18:30 UTCVendor advisory
  28. 2026-08-09 18:30 UTCGHSA enrichment
  29. 2026-08-09 05:23 UTCEG score recompute
  30. 2026-08-09 05:23 UTCVendor advisory
  31. 2026-08-09 05:23 UTCGHSA enrichment
  32. 2026-08-08 16:37 UTCEPSS rescore
  33. 2026-08-08 04:38 UTCEG score recompute
  34. 2026-08-08 04:38 UTCVendor advisory
  35. 2026-08-08 04:38 UTCGHSA enrichment
  36. 2026-08-07 15:32 UTCVendor advisory
  37. 2026-08-07 15:32 UTCGHSA enrichment
  38. 2026-08-06 17:59 UTCEG score recompute
  39. 2026-08-06 17:59 UTCVendor advisory
  40. 2026-08-06 17:58 UTCGHSA enrichment
  41. 2026-08-06 13:46 UTCEPSS rescore
  42. 2026-08-06 01:48 UTCEG score recompute
  43. 2026-08-06 01:48 UTCVendor advisory
  44. 2026-08-06 01:48 UTCGHSA enrichment
  45. 2026-08-05 19:17 UTCEPSS rescore
  46. 2026-08-05 12:42 UTCEG score recompute
  47. 2026-08-05 12:42 UTCVendor advisory
  48. 2026-08-05 12:42 UTCGHSA enrichment
  49. 2026-08-04 15:10 UTCEPSS rescore
  50. 2026-08-04 10:38 UTCEPSS rescore
  51. 2026-08-03 22:46 UTCEG score recompute
  52. 2026-08-03 22:46 UTCVendor advisory
  53. 2026-08-03 22:46 UTCGHSA enrichment
  54. 2026-08-03 10:35 UTCEPSS rescore
  55. 2026-08-02 14:43 UTCEG score recompute
  56. 2026-08-02 14:43 UTCVendor advisory
  57. 2026-08-02 14:43 UTCGHSA enrichment
  58. 2026-08-02 02:26 UTCEPSS rescore
  59. 2026-08-01 04:15 UTCEPSS rescore
  60. 2026-07-25 14:17 UTCEPSS rescore
  61. 2026-07-25 14:17 UTCEPSS rescore
  62. 2026-07-24 14:17 UTCEPSS rescore
  63. 2026-07-23 14:18 UTCEPSS rescore
  64. 2026-07-23 14:18 UTCEPSS rescore
  65. 2026-07-23 03:07 UTCEG score recompute
  66. 2026-07-22 14:08 UTCEPSS rescore
  67. 2026-07-21 15:24 UTCEPSS rescore
  68. 2026-07-21 15:24 UTCEPSS rescore
  69. 2026-07-20 17:08 UTCEPSS rescore
  70. 2026-07-19 14:31 UTCEPSS rescore
  71. 2026-07-19 14:31 UTCEPSS rescore
  72. 2026-07-18 10:04 UTCEPSS rescore
  73. 2026-07-18 10:04 UTCEPSS rescore
  74. 2026-07-17 03:54 UTCOSV refresh
  75. 2026-07-16 17:03 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-23412?
CVE-2026-23412 is a high vulnerability published on April 2, 2026. In the Linux kernel, the following vulnerability has been resolved: netfilter: bpf: defer hook memory release until rcu readers are done Yiming Qian reports UaF when concurrent process is dumping hooks via nfnetlink_hooks: BUG: KASAN: slab-use-after-free in nfnlhookdump_one.isra.0+0xe71/0x10f0 Read…
When was CVE-2026-23412 disclosed?
CVE-2026-23412 was first published in the National Vulnerability Database on April 2, 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-2026-23412 actively exploited?
CVE-2026-23412 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 98.1% of all scored CVEs.
What is the CVSS score of CVE-2026-23412?
CVE-2026-23412 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-23412?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-23412, 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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