CVE-2026-45847

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-05-27. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 5 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

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

net: remove WARN_ON_ONCE when accessing forward path array

Although unlikely, recent support for IPIP tunnels increases chances of reaching this WARN_ON_ONCE if userspace manages to build a sufficiently long forward path.

Remove it.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

May 27, 2026

Last Modified

June 25, 2026

Advisory Details (7)

Auto-updated Jun 25, 2026
No patch confirmed yet.
generic

net: remove WARN_ON_ONCE when accessing forward path array - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/dcf9b3c90e5560339649d088836529883fb509f3
generic

net: remove WARN_ON_ONCE when accessing forward path array - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a78d055ba7c31103ad02f8eceb0c452e154d2660
generic

net: remove WARN_ON_ONCE when accessing forward path array - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/959ea349c7e2d4edf07b6838ca7e59345fe61a08
generic

net: remove WARN_ON_ONCE when accessing forward path array - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9464ca7a6e56ad1ebf48b2ad5c16871edfad10c6
generic

net: remove WARN_ON_ONCE when accessing forward path array - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/548244c2f542aa0ad49453e9306e715a3877bc44
generic

net: remove WARN_ON_ONCE when accessing forward path array - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/50422613185d505201167e8bdd2f2700790d5db6
generic

net: remove WARN_ON_ONCE when accessing forward path array - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/008e7a7c293b30bc43e4368dac6ea3808b75a572

Vendor Advisories for CVE-2026-45847(1)

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

Patch Availability(25)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1058.61.1) @ noble2026-09-14ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1029.30) @ noble2026-09-14ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-134.134+fips1) @ noble2026-09-14ubuntu
ubuntulinux-tools-realtime-hwe-22.04 (6.8.1-1055.56~22.04.1) @ jammy2026-09-14ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (6.8.0-134.134.1) @ noble2026-09-14ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-09-14ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1032.33) @ noble2026-09-14ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2049.50) @ noble2026-09-14ubuntu
ubuntulinux-tools-raspi-6.8 (6.8.0-1060.64) @ noble2026-09-14ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-09-14ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-09-14ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-09-14ubuntu
ubuntulinux-tools-ibm-edge (5.15.0.1106.110~20.04.1) @ focal2026-09-14ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-09-14ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-09-14ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-09-14ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-09-14ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-09-14ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-09-14ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-09-14ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-09-14ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-09-14ubuntu
ubuntulinux-tools-intel-iotg-5.15 (5.15.0.1107.106) @ jammy2026-09-14ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-09-14ubuntu
linuxKernel @ 5.15.202—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

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (48 versions)6.1.170-1—
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 ... 6.18~rc7-1~exp1 (103 versions)6.18.14-1—

Weakness Classification(1)

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

All Vendor Advisories

(24)

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

Frequently asked(5)

What is CVE-2026-45847?
CVE-2026-45847 is a medium vulnerability published on May 27, 2026. In the Linux kernel, the following vulnerability has been resolved: net: remove WARNONONCE when accessing forward path array Although unlikely, recent support for IPIP tunnels increases chances of reaching this WARNONONCE if userspace manages to build a sufficiently long forward path. Remove it.
When was CVE-2026-45847 disclosed?
CVE-2026-45847 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45847 actively exploited?
CVE-2026-45847 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 94.4% of all scored CVEs.
What is the CVSS score of CVE-2026-45847?
CVE-2026-45847 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-45847?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45847, 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-2026-45847

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