CVE-2026-43441

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-08. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 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:

net: bonding: Fix nd_tbl NULL dereference when IPv6 is disabled

When booting with the 'ipv6.disable=1' parameter, the nd_tbl is never initialized because inet6_init() exits before ndisc_init() is called which initializes it. If bonding ARP/NS validation is enabled, an IPv6 NS/NA packet received on a slave can reach bond_validate_na(), which calls bond_has_this_ip6(). That path calls ipv6_chk_addr() and can crash in __ipv6_chk_addr_and_flags().

BUG: kernel NULL pointer dereference, address: 00000000000005d8 Oops: Oops: 0000 [#1] SMP NOPTI RIP: 0010:__ipv6_chk_addr_and_flags+0x69/0x170 Call Trace: ipv6_chk_addr+0x1f/0x30 bond_validate_na+0x12e/0x1d0 [bonding] ? __pfx_bond_handle_frame+0x10/0x10 [bonding] bond_rcv_validate+0x1a0/0x450 [bonding] bond_handle_frame+0x5e/0x290 [bonding] ? srso_alias_return_thunk+0x5/0xfbef5 __netif_receive_skb_core.constprop.0+0x3e8/0xe50 ? srso_alias_return_thunk+0x5/0xfbef5 ? update_cfs_rq_load_avg+0x1a/0x240 ? srso_alias_return_thunk+0x5/0xfbef5 ? __enqueue_entity+0x5e/0x240 __netif_receive_skb_one_core+0x39/0xa0 process_backlog+0x9c/0x150 __napi_poll+0x30/0x200 ? srso_alias_return_thunk+0x5/0xfbef5 net_rx_action+0x338/0x3b0 handle_softirqs+0xc9/0x2a0 do_softirq+0x42/0x60 __local_bh_enable_ip+0x62/0x70 __dev_queue_xmit+0x2d3/0x1000 ? srso_alias_return_thunk+0x5/0xfbef5 ? srso_alias_return_thunk+0x5/0xfbef5 ? packet_parse_headers+0x10a/0x1a0 packet_sendmsg+0x10da/0x1700 ? kick_pool+0x5f/0x140 ? srso_alias_return_thunk+0x5/0xfbef5 ? __queue_work+0x12d/0x4f0 __sys_sendto+0x1f3/0x220 __x64_sys_sendto+0x24/0x30 do_syscall_64+0x101/0xf80 ? exc_page_fault+0x6e/0x170 ? srso_alias_return_thunk+0x5/0xfbef5 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Fix this by checking ipv6_mod_enabled() before dispatching IPv6 packets to bond_na_rcv(). If IPv6 is disabled, return early from bond_rcv_validate() and avoid the path to ipv6_chk_addr().

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
38.2%
KEV
Not listed

Published

May 8, 2026

Last Modified

May 21, 2026

Advisory Details (6)

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

net: bonding: Fix nd_tbl NULL dereference when IPv6 is disabled - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cf6099ef493b94e140b0fad52482a78853115318
generic

net: bonding: Fix nd_tbl NULL dereference when IPv6 is disabled - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c9c238066fb254dabf65e27379f93c56112c5b96
generic

net: bonding: Fix nd_tbl NULL dereference when IPv6 is disabled - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c78f01abe535853f13f0b26cd5b1d2f19bf52e2f
generic

net: bonding: Fix nd_tbl NULL dereference when IPv6 is disabled - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/95faa1459b83fa544191e82ccc73856f03b7741f
generic

net: bonding: Fix nd_tbl NULL dereference when IPv6 is disabled - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/49dbfcb70eca5f6f9043594e1e323c74c39e3863
generic

net: bonding: Fix nd_tbl NULL dereference when IPv6 is disabled - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/30021e969d48e5819d5ae56936c2f34c0f7ce997

Vendor Advisories for CVE-2026-43441(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 43× 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 139 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-43441?
CVE-2026-43441 is a high vulnerability published on May 8, 2026. In the Linux kernel, the following vulnerability has been resolved: net: bonding: Fix nd_tbl NULL dereference when IPv6 is disabled When booting with the 'ipv6.disable=1' parameter, the nd_tbl is never initialized because inet6init() exits before ndiscinit() is called which initializes it. If…
When was CVE-2026-43441 disclosed?
CVE-2026-43441 was first published in the National Vulnerability Database on May 8, 2026, with the most recent update on May 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43441 actively exploited?
CVE-2026-43441 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 38.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-43441?
CVE-2026-43441 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-43441?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43441, 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

Explore the affected products and dependency analysis for CVE-2026-43441

Explore →

Is Your Infrastructure Affected by CVE-2026-43441?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs