CVE-2026-23098

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-02-04. 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

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
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
8%
KEV
Not listed

Published

February 4, 2026

Last Modified

August 5, 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.

Affected Packages

(5 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (48 versions)5.10.249-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.159-1~deb11u1 (14 versions)6.1.162-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (46 versions)6.1.162-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.69-1~bpo12+1 (10 versions)6.12.69-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.18~rc7-1~exp1 (96 versions)6.18.8-1—

Weakness Classification(1)

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

All Vendor Advisories

(25)

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 / 24× 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. 2026-09-19 16:33 UTCOSV refresh
  2. 2026-09-18 19:27 UTCEPSS rescore
  3. 2026-09-16 14:07 UTCEPSS rescore
  4. 2026-09-16 05:15 UTCEPSS rescore
  5. 2026-09-13 16:47 UTCEPSS rescore
  6. 2026-09-12 15:01 UTCEPSS rescore
  7. 2026-09-11 14:52 UTCEPSS rescore
  8. 2026-09-10 09:34 UTCEPSS rescore
  9. 2026-09-08 22:00 UTCEPSS rescore
  10. 2026-09-07 16:01 UTCEPSS rescore
  11. 2026-09-06 13:47 UTCEPSS rescore
  12. 2026-09-06 13:47 UTCEPSS rescore
  13. 2026-09-04 05:06 UTCEPSS rescore
  14. 2026-09-02 14:11 UTCEPSS rescore
  15. 2026-09-01 13:53 UTCEPSS rescore
  16. 2026-09-01 04:39 UTCEPSS rescore
  17. 2026-08-31 20:04 UTCOSV refresh
  18. 2026-08-30 19:17 UTCEPSS rescore
  19. 2026-08-30 01:22 UTCEPSS rescore
  20. 2026-08-28 21:41 UTCEPSS rescore
  21. 2026-08-27 14:25 UTCEPSS rescore
  22. 2026-08-26 14:46 UTCEPSS rescore
  23. 2026-08-23 00:19 UTCEPSS rescore
  24. 2026-08-21 23:49 UTCEPSS rescore
  25. 2026-08-19 17:03 UTCEPSS rescore
Show 75 more
  1. 2026-08-18 13:48 UTCEPSS rescore
  2. 2026-08-17 13:47 UTCEPSS rescore
  3. 2026-08-16 14:56 UTCEPSS rescore
  4. 2026-08-16 02:14 UTCEPSS rescore
  5. 2026-08-15 01:30 UTCEPSS rescore
  6. 2026-08-14 22:56 UTCVendor advisory
  7. 2026-08-14 22:56 UTCGHSA enrichment
  8. 2026-08-14 11:13 UTCEG score recompute
  9. 2026-08-14 11:13 UTCVendor advisory
  10. 2026-08-14 11:13 UTCGHSA enrichment
  11. 2026-08-13 22:00 UTCEPSS rescore
  12. 2026-08-13 03:32 UTCEG score recompute
  13. 2026-08-13 03:32 UTCVendor advisory
  14. 2026-08-13 03:32 UTCGHSA enrichment
  15. 2026-08-12 13:50 UTCEPSS rescore
  16. 2026-08-11 13:42 UTCEPSS rescore
  17. 2026-08-11 00:00 UTCEPSS rescore
  18. 2026-08-10 03:15 UTCVendor advisory
  19. 2026-08-10 03:15 UTCGHSA enrichment
  20. 2026-08-09 15:52 UTCEG score recompute
  21. 2026-08-09 15:52 UTCVendor advisory
  22. 2026-08-09 15:52 UTCGHSA enrichment
  23. 2026-08-09 13:46 UTCEPSS rescore
  24. 2026-08-08 16:37 UTCEPSS rescore
  25. 2026-08-08 09:53 UTCVendor advisory
  26. 2026-08-08 09:53 UTCGHSA enrichment
  27. 2026-08-07 22:47 UTCEG score recompute
  28. 2026-08-07 22:47 UTCVendor advisory
  29. 2026-08-07 22:47 UTCGHSA enrichment
  30. 2026-08-06 13:46 UTCEPSS rescore
  31. 2026-08-06 04:23 UTCEG score recompute
  32. 2026-08-06 04:23 UTCVendor advisory
  33. 2026-08-06 04:23 UTCGHSA enrichment
  34. 2026-08-05 19:17 UTCEPSS rescore
  35. 2026-08-05 12:45 UTCEG score recompute
  36. 2026-08-05 12:45 UTCVendor advisory
  37. 2026-08-05 12:45 UTCGHSA enrichment
  38. 2026-08-04 15:10 UTCEPSS rescore
  39. 2026-08-04 10:38 UTCEPSS rescore
  40. 2026-08-03 10:35 UTCEPSS rescore
  41. 2026-08-02 21:26 UTCEG score recompute▼ 1.00
  42. 2026-08-02 21:26 UTCVendor advisory
  43. 2026-08-02 21:26 UTCGHSA enrichment
  44. 2026-08-02 02:26 UTCEPSS rescore
  45. 2026-08-01 04:15 UTCEPSS rescore
  46. 2026-07-31 14:42 UTCOSV refresh
  47. 2026-07-30 01:30 UTCEPSS rescore
  48. 2026-07-27 14:13 UTCEPSS rescore
  49. 2026-07-26 14:54 UTCEPSS rescore
  50. 2026-07-26 14:54 UTCEPSS rescore
  51. 2026-07-25 14:17 UTCEPSS rescore
  52. 2026-07-25 14:17 UTCEPSS rescore
  53. 2026-07-24 14:17 UTCEPSS rescore
  54. 2026-07-23 14:18 UTCEPSS rescore
  55. 2026-07-23 14:18 UTCEPSS rescore
  56. 2026-07-23 03:06 UTCEG score recompute▲ 1.00
  57. 2026-07-22 14:08 UTCEPSS rescore
  58. 2026-07-21 15:24 UTCEPSS rescore
  59. 2026-07-21 15:24 UTCEPSS rescore
  60. 2026-07-20 17:08 UTCEPSS rescore
  61. 2026-07-19 14:31 UTCEPSS rescore
  62. 2026-07-19 14:31 UTCEPSS rescore
  63. 2026-07-19 02:29 UTCEPSS rescore
  64. 2026-07-19 02:28 UTCEPSS rescore
  65. 2026-07-18 10:04 UTCEPSS rescore
  66. 2026-07-18 10:04 UTCEPSS rescore
  67. 2026-07-16 17:03 UTCEPSS rescore
  68. 2026-07-16 17:03 UTCEPSS rescore
  69. 2026-07-15 16:57 UTCEPSS rescore
  70. 2026-07-15 16:57 UTCEPSS rescore
  71. 2026-07-15 02:00 UTCEPSS rescore
  72. 2026-07-15 02:00 UTCEPSS rescore
  73. 2026-07-13 22:30 UTCEPSS rescore
  74. 2026-07-13 21:38 UTCOSV refresh
  75. 2026-07-13 06:13 UTCEPSS rescore

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 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-2026-23098 actively exploited?
CVE-2026-23098 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 91.6% of all scored CVEs.
What is the CVSS score of CVE-2026-23098?
CVE-2026-23098 has a CVSS v3 base score of 7.8 (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.

Dependency Blast Radius

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