CVE-2026-43099

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-06. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

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

ipv4: icmp: fix null-ptr-deref in icmp_build_probe()

ipv6_stub->ipv6_dev_find() may return ERR_PTR(-EAFNOSUPPORT) when the IPv6 stack is not active (CONFIG_IPV6=m and not loaded), and passing this error pointer to dev_hold() will cause a kernel crash with null-ptr-deref.

Instead, silently discard the request. RFC 8335 does not appear to define a specific response for the case where an IPv6 interface identifier is syntactically valid but the implementation cannot perform the lookup at runtime, and silently dropping the request may safer than misreporting "No Such Interface".

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
41%
KEV
Not listed

Published

May 6, 2026

Last Modified

August 5, 2026

Advisory Details (5)

Auto-updated May 11, 2026
No patch confirmed yet.
generic

ipv4: icmp: fix null-ptr-deref in icmp_build_probe() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fde29fd9349327acc50d19a0b5f3d5a6c964dfd8
generic

ipv4: icmp: fix null-ptr-deref in icmp_build_probe() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f91b3ed9e7fa82a70511b5f6901c88379acf2964
generic

ipv4: icmp: fix null-ptr-deref in icmp_build_probe() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6be325206850a0891896d38bcf83a09d8b54ec48
generic

ipv4: icmp: fix null-ptr-deref in icmp_build_probe() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5b9911582d441f72fe6ccb15ffe3303bbc07f6f5
generic

ipv4: icmp: fix null-ptr-deref in icmp_build_probe() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/47a8bf52156ac7e7a581eca31c1f964ba4258d4d

Vendor Advisories for CVE-2026-43099(1)

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

Patch Availability(27)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-08-23ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-08-23ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-08-23ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-08-23ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-08-23ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1058.61) @ noble2026-08-23ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-nvidia-hwe-22.04-edge (6.8.0-1059.62~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-08-23ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-08-23ubuntu
ubuntulinux-tools-ibm-edge (5.15.0.1106.110~20.04.1) @ focal2026-08-23ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-08-23ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-08-23ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-08-23ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-08-23ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-08-23ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-08-23ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-08-23ubuntu
ubuntulinux-tools-intel-iotg-5.15 (5.15.0.1107.106) @ jammy2026-08-23ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-08-23ubuntu
linuxKernel @ 5.15.209—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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
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 ... 6.12.85-1~bpo12+1 (17 versions)6.12.85-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.19~rc8-1~exp1 (129 versions)6.19.14-1—

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 7× in last 7d / 31× 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 210 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 16:53 UTCOSV refresh
  4. 2026-09-11 14:53 UTCEPSS rescore
  5. 2026-09-11 09:37 UTCEPSS rescore
  6. 2026-09-10 09:34 UTCEPSS rescore
  7. 2026-09-08 22:00 UTCEPSS rescore
  8. 2026-09-07 16:01 UTCEPSS rescore
  9. 2026-09-06 13:47 UTCEPSS rescore
  10. 2026-09-04 05:06 UTCEPSS rescore
  11. 2026-09-02 14:12 UTCEPSS rescore
  12. 2026-09-01 13:54 UTCEPSS rescore
  13. 2026-08-30 19:17 UTCEPSS rescore
  14. 2026-08-30 01:22 UTCEPSS rescore
  15. 2026-08-28 21:41 UTCEPSS rescore
  16. 2026-08-27 14:25 UTCEPSS rescore
  17. 2026-08-26 14:46 UTCEPSS rescore
  18. 2026-08-25 13:49 UTCEPSS rescore
  19. 2026-08-23 20:26 UTCEG score recompute
  20. 2026-08-23 20:26 UTCVendor advisory
  21. 2026-08-23 20:25 UTCGHSA enrichment
  22. 2026-08-23 00:19 UTCEPSS rescore
  23. 2026-08-21 23:49 UTCEPSS rescore
  24. 2026-08-20 22:55 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. 2026-08-17 12:59 UTCEG score recompute
  4. 2026-08-17 12:59 UTCVendor advisory
  5. 2026-08-17 12:59 UTCGHSA enrichment
  6. 2026-08-16 14:56 UTCEPSS rescore
  7. 2026-08-16 04:56 UTCEG score recompute
  8. 2026-08-16 04:56 UTCVendor advisory
  9. 2026-08-16 04:56 UTCGHSA enrichment
  10. 2026-08-16 02:14 UTCEPSS rescore
  11. 2026-08-15 01:30 UTCEPSS rescore
  12. 2026-08-14 16:21 UTCVendor advisory
  13. 2026-08-14 16:21 UTCGHSA enrichment
  14. 2026-08-14 03:31 UTCEG score recompute
  15. 2026-08-14 03:31 UTCVendor advisory
  16. 2026-08-14 03:31 UTCGHSA enrichment
  17. 2026-08-13 22:00 UTCEPSS rescore
  18. 2026-08-13 06:08 UTCVendor advisory
  19. 2026-08-13 06:08 UTCGHSA enrichment
  20. 2026-08-12 17:09 UTCEG score recompute
  21. 2026-08-12 17:09 UTCVendor advisory
  22. 2026-08-12 17:09 UTCGHSA enrichment
  23. 2026-08-12 13:51 UTCEPSS rescore
  24. 2026-08-11 16:01 UTCEG score recompute
  25. 2026-08-11 16:01 UTCVendor advisory
  26. 2026-08-11 16:01 UTCGHSA enrichment
  27. 2026-08-11 13:43 UTCEPSS rescore
  28. 2026-08-11 01:34 UTCEG score recompute
  29. 2026-08-11 01:34 UTCVendor advisory
  30. 2026-08-11 01:34 UTCGHSA enrichment
  31. 2026-08-11 00:00 UTCEPSS rescore
  32. 2026-08-10 04:18 UTCVendor advisory
  33. 2026-08-10 04:18 UTCGHSA enrichment
  34. 2026-08-09 15:28 UTCEG score recompute
  35. 2026-08-09 15:28 UTCVendor advisory
  36. 2026-08-09 15:28 UTCGHSA enrichment
  37. 2026-08-09 13:46 UTCEPSS rescore
  38. 2026-08-09 02:37 UTCVendor advisory
  39. 2026-08-09 02:37 UTCGHSA enrichment
  40. 2026-08-08 12:56 UTCVendor advisory
  41. 2026-08-08 12:56 UTCGHSA enrichment
  42. 2026-08-08 00:06 UTCEG score recompute
  43. 2026-08-08 00:06 UTCVendor advisory
  44. 2026-08-08 00:06 UTCGHSA enrichment
  45. 2026-08-07 11:16 UTCVendor advisory
  46. 2026-08-07 11:16 UTCGHSA enrichment
  47. 2026-08-06 16:55 UTCEG score recompute
  48. 2026-08-06 16:55 UTCVendor advisory
  49. 2026-08-06 16:55 UTCGHSA enrichment
  50. 2026-08-06 13:46 UTCEPSS rescore
  51. 2026-08-06 01:23 UTCEG score recompute
  52. 2026-08-06 01:23 UTCVendor advisory
  53. 2026-08-06 01:23 UTCGHSA enrichment
  54. 2026-08-05 19:17 UTCEPSS rescore
  55. 2026-08-05 12:33 UTCEG score recompute
  56. 2026-08-05 12:33 UTCVendor advisory
  57. 2026-08-05 12:33 UTCGHSA enrichment
  58. 2026-08-04 15:10 UTCEPSS rescore
  59. 2026-08-04 10:38 UTCEPSS rescore
  60. 2026-08-03 19:54 UTCEG score recompute
  61. 2026-08-03 19:54 UTCVendor advisory
  62. 2026-08-03 19:54 UTCGHSA enrichment
  63. 2026-08-03 10:36 UTCEPSS rescore
  64. 2026-08-02 18:01 UTCVendor advisory
  65. 2026-08-02 18:01 UTCGHSA enrichment
  66. 2026-08-02 05:11 UTCEG score recompute
  67. 2026-08-02 05:11 UTCVendor advisory
  68. 2026-08-02 05:11 UTCGHSA enrichment
  69. 2026-08-02 02:27 UTCEPSS rescore
  70. 2026-08-01 04:16 UTCEPSS rescore
  71. 2026-07-30 16:28 UTCEPSS rescore
  72. 2026-07-30 01:30 UTCEPSS rescore
  73. 2026-07-28 15:36 UTCEPSS rescore
  74. 2026-07-27 14:13 UTCEPSS rescore
  75. 2026-07-26 14:54 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-43099?
CVE-2026-43099 is a high vulnerability published on May 6, 2026. In the Linux kernel, the following vulnerability has been resolved: ipv4: icmp: fix null-ptr-deref in icmpbuildprobe() ipv6stub->ipv6devfind() may return ERRPTR(-EAFNOSUPPORT) when the IPv6 stack is not active (CONFIG_IPV6=m and not loaded), and passing this error pointer to dev_hold() will cause a…
When was CVE-2026-43099 disclosed?
CVE-2026-43099 was first published in the National Vulnerability Database on May 6, 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-2026-43099 actively exploited?
CVE-2026-43099 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 59.3% of all scored CVEs.
What is the CVSS score of CVE-2026-43099?
CVE-2026-43099 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-43099?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43099, 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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