CVE-2026-23098

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 93% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.8Exploit: NoneExposed: 0

A fix is available — apply it.

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

netrom: fix double-free in nr_route_frame()

In nr_route_frame(), old_skb is immediately freed without checking if nr_neigh->ax25 pointer is NULL. Therefore, if nr_neigh->ax25 is NULL, the caller function will free old_skb again, causing a double-free bug.

Therefore, to prevent this, we need to modify it to check whether nr_neigh->ax25 is NULL before freeing old_skb.

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
7.5%
KEV
Not listed

Published

February 4, 2026

Last Modified

April 3, 2026

Advisory Details (7)

Auto-updated Jun 8, 2026
No patch confirmed yet.
generic

netrom: fix double-free in nr_route_frame() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bd8955337e3764f912f49b360e176d8aaecf7016
generic

netrom: fix double-free in nr_route_frame() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ba1096c315283ee3292765f6aea4cca15816c4f7
generic

netrom: fix double-free in nr_route_frame() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9f5fa78d9980fe75a69835521627ab7943cb3d67
generic

netrom: fix double-free in nr_route_frame() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/94d1a8bd08af1f4cc345c5c29f5db1ea72b8bb8c
generic

netrom: fix double-free in nr_route_frame() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7c48fdf2d1349bb54815b56fb012b9d577707708
generic

netrom: fix double-free in nr_route_frame() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6e0110ea90313b7c0558a0b77038274a6821caf8
generic

netrom: fix double-free in nr_route_frame() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/25aab6bfc31017a7e52035b99aef5c2b6bde8ffb

Patch Availability(21)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-gcp-fips-5.15 (5.15.0.1105.95) @ jammy2026-06-08ubuntu
ubuntulinux-tools-realtime-5.15 (5.15.0.1104.108) @ jammy2026-06-08ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.176.186~20.04.1) @ focal2026-06-08ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1057.57~20.04.1) @ focal2026-06-08ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1099.97) @ jammy2026-06-08ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (5.15.0.175.185~20.04.1) @ focal2026-06-08ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1057.57) @ jammy2026-06-08ubuntu
ubuntulinux-tools-ibm-5.15 (5.15.0.1099.95) @ jammy2026-06-08ubuntu
ubuntulinux-tools-kvm-5.15 (5.15.0.1097.93) @ jammy2026-06-08ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1110.95) @ jammy2026-06-08ubuntu
ubuntulinux-tools-azure-edge (5.15.0.1110.119~20.04.1) @ focal2026-06-08ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1070 (5.15.0-1070.74) @ jammy2026-06-08ubuntu
ubuntulinux-tools-realtime-hwe-22.04 (6.8.1-1051.52~22.04.1) @ jammy2026-06-08ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1054.57.1) @ noble2026-06-08ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-116.116+fips1) @ noble2026-06-08ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1106.115~20.04.1) @ focal2026-06-08ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1024.24) @ noble2026-06-08ubuntu
ubuntulinux-tools-nvidia-hwe-22.04-edge (6.8.0-1054.57~22.04.1) @ jammy2026-06-08ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1056.62) @ noble2026-06-08ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1059.65+fips1) @ noble2026-06-08ubuntu
linuxKernel @ 5.10.249—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.

Weakness Classification(1)

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

All Vendor Advisories

(20)

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 14× in last 7d / 51× 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 128 total refreshes for this CVE.

  1. 2026-07-24 14:17 UTCEPSS rescore
  2. 2026-07-23 14:18 UTCEPSS rescore
  3. 2026-07-23 14:18 UTCEPSS rescore
  4. 2026-07-23 03:06 UTCEG score recompute▲ 1.00
  5. 2026-07-22 14:08 UTCEPSS rescore
  6. 2026-07-21 15:24 UTCEPSS rescore
  7. 2026-07-21 15:24 UTCEPSS rescore
  8. 2026-07-20 17:08 UTCEPSS rescore
  9. 2026-07-19 14:31 UTCEPSS rescore
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  11. 2026-07-19 02:29 UTCEPSS rescore
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  15. 2026-07-16 17:03 UTCEPSS rescore
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  20. 2026-07-15 02:00 UTCEPSS rescore
  21. 2026-07-13 22:30 UTCEPSS rescore
  22. 2026-07-13 21:38 UTCOSV refresh
  23. 2026-07-13 06:13 UTCEPSS rescore
  24. 2026-07-13 06:13 UTCEPSS rescore
  25. 2026-07-12 05:46 UTCEPSS rescore
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  1. 2026-07-12 05:46 UTCEPSS rescore
  2. 2026-07-11 08:27 UTCEPSS rescore
  3. 2026-07-09 19:10 UTCEPSS rescore
  4. 2026-07-08 15:15 UTCEPSS rescore
  5. 2026-07-08 15:15 UTCEPSS rescore
  6. 2026-07-07 13:46 UTCEPSS rescore
  7. 2026-07-06 16:27 UTCEPSS rescore
  8. 2026-07-06 16:27 UTCEPSS rescore
  9. 2026-07-06 02:23 UTCEPSS rescore
  10. 2026-07-06 02:23 UTCEPSS rescore
  11. 2026-07-05 02:30 UTCEPSS rescore
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  14. 2026-07-01 15:06 UTCEPSS rescore
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  16. 2026-06-30 23:22 UTCEPSS rescore
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  18. 2026-06-29 14:06 UTCEPSS rescore
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  21. 2026-06-28 04:56 UTCEPSS rescore
  22. 2026-06-28 04:56 UTCEPSS rescore
  23. 2026-06-27 03:08 UTCEPSS rescore
  24. 2026-06-25 19:16 UTCOSV refresh
  25. 2026-06-25 13:49 UTCEPSS rescore
  26. 2026-06-25 13:49 UTCEPSS rescore
  27. 2026-06-24 14:05 UTCEPSS rescore
  28. 2026-06-24 14:05 UTCEPSS rescore
  29. 2026-06-23 21:33 UTCEPSS rescore
  30. 2026-06-23 21:32 UTCEPSS rescore
  31. 2026-06-22 14:25 UTCEPSS rescore
  32. 2026-06-22 14:25 UTCEPSS rescore
  33. 2026-06-21 14:56 UTCEPSS rescore
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  35. 2026-06-21 01:59 UTCEPSS rescore
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  37. 2026-06-19 19:25 UTCEPSS rescore
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  39. 2026-06-18 17:52 UTCEPSS rescore
  40. 2026-06-17 17:53 UTCEPSS rescore
  41. 2026-06-17 17:53 UTCEPSS rescore
  42. 2026-06-16 17:52 UTCEPSS rescore
  43. 2026-06-15 17:48 UTCEPSS rescore
  44. 2026-06-14 23:18 UTCEPSS rescore
  45. 2026-06-13 23:00 UTCEPSS rescore
  46. 2026-06-13 23:00 UTCEPSS rescore
  47. 2026-06-12 23:12 UTCEPSS rescore
  48. 2026-06-11 14:00 UTCEPSS rescore
  49. 2026-06-10 22:18 UTCEPSS rescore
  50. 2026-06-10 13:22 UTCEPSS rescore
  51. 2026-06-08 14:17 UTCEPSS rescore
  52. 2026-06-08 14:17 UTCEPSS rescore
  53. 2026-06-08 08:40 UTCVendor advisory
  54. 2026-06-08 08:40 UTCGHSA enrichment
  55. 2026-06-07 21:34 UTCVendor advisory
  56. 2026-06-07 21:34 UTCGHSA enrichment
  57. 2026-06-07 15:25 UTCEPSS rescore
  58. 2026-06-07 15:24 UTCEPSS rescore
  59. 2026-06-06 13:47 UTCEPSS rescore
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  63. 2026-06-05 06:10 UTCEPSS rescore
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  65. 2026-06-04 13:12 UTCEPSS rescore
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  68. 2026-06-02 20:13 UTCEPSS rescore
  69. 2026-06-02 20:13 UTCEPSS rescore
  70. 2026-06-01 14:57 UTCOSV refresh
  71. 2026-06-01 13:51 UTCEPSS rescore
  72. 2026-06-01 13:51 UTCEPSS rescore
  73. 2026-06-01 13:51 UTCEPSS rescore
  74. 2026-05-31 22:30 UTCEPSS rescore
  75. 2026-05-31 22:30 UTCEPSS rescore

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-23098?
CVE-2026-23098 is a high vulnerability published on February 4, 2026. In the Linux kernel, the following vulnerability has been resolved: netrom: fix double-free in nrrouteframe() In nrrouteframe(), old_skb is immediately freed without checking if nrneigh->ax25 pointer is NULL. Therefore, if nrneigh->ax25 is NULL, the caller function will free old_skb again, causing…
When was CVE-2026-23098 disclosed?
CVE-2026-23098 was first published in the National Vulnerability Database on February 4, 2026, with the most recent update on April 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-23098 actively exploited?
CVE-2026-23098 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-23098?
CVE-2026-23098 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-23098?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-23098, 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.

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