CVE-2026-43410

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-05-08. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: 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:

firmware: stratix10-rsu: Fix NULL pointer dereference when RSU is disabled

When the Remote System Update (RSU) isn't enabled in the First Stage Boot Loader (FSBL), the driver encounters a NULL pointer dereference when excute svc_normal_to_secure_thread() thread, resulting in a kernel panic:

Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008 Mem abort info: ... Data abort info: ... [0000000000000008] user address but active_mm is swapper Internal error: Oops: 0000000096000004 [#1] SMP Modules linked in: CPU: 0 UID: 0 PID: 79 Comm: svc_smc_hvc_thr Not tainted 6.19.0-rc8-yocto-standard+ #59 PREEMPT Hardware name: SoCFPGA Stratix 10 SoCDK (DT) pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : svc_normal_to_secure_thread+0x38c/0x990 lr : svc_normal_to_secure_thread+0x144/0x990 ... Call trace: svc_normal_to_secure_thread+0x38c/0x990 (P) kthread+0x150/0x210 ret_from_fork+0x10/0x20 Code: 97cfc113 f9400260 aa1403e1 f9400400 (f9400402) ---[ end trace 0000000000000000 ]---

The issue occurs because rsu_send_async_msg() fails when RSU is not enabled in firmware, causing the channel to be freed via stratix10_svc_free_channel(). However, the probe function continues execution and registers svc_normal_to_secure_thread(), which subsequently attempts to access the already-freed channel, triggering the NULL pointer dereference.

Fix this by properly cleaning up the async client and returning early on failure, preventing the thread from being used with an invalid channel.

CVSS v3
5.5
EG Score
5.5(medium)
EPSS
1.9%
KEV
Not listed

Published

May 8, 2026

Last Modified

May 21, 2026

Advisory Details (2)

Auto-updated Jun 15, 2026
No patch confirmed yet.
generic

firmware: stratix10-rsu: Fix NULL pointer dereference when RSU is disabled - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c45f7263100cece247dd3fa5fe277bd97fdb5687
generic

firmware: stratix10-rsu: Fix NULL pointer dereference when RSU is disabled - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/aa5739e0c51ad01c6e763ca89c1bfb58fc6ea71a

Vendor Advisories for CVE-2026-43410(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 4× in last 7d / 35× 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 102 total refreshes for this CVE.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-13 22:30 UTCEPSS rescore
  3. 2026-07-13 06:13 UTCEPSS rescore
  4. 2026-07-09 19:10 UTCEPSS rescore
  5. 2026-07-08 15:16 UTCEPSS rescore
  6. 2026-07-07 13:46 UTCEPSS rescore
  7. 2026-07-06 16:27 UTCEPSS rescore
  8. 2026-07-06 02:23 UTCEPSS rescore
  9. 2026-07-05 02:30 UTCEPSS rescore
  10. 2026-07-04 06:31 UTCEPSS rescore
  11. 2026-07-01 15:06 UTCEPSS rescore
  12. 2026-06-30 23:22 UTCEPSS rescore
  13. 2026-06-28 14:07 UTCEPSS rescore
  14. 2026-06-28 04:56 UTCEPSS rescore
  15. 2026-06-28 04:55 UTCEG score recompute
  16. 2026-06-28 04:55 UTCGHSA enrichment
  17. 2026-06-27 03:08 UTCEPSS rescore
  18. 2026-06-26 21:25 UTCEG score recompute
  19. 2026-06-26 21:25 UTCGHSA enrichment
  20. 2026-06-25 13:49 UTCEPSS rescore
  21. 2026-06-25 13:49 UTCEPSS rescore
  22. 2026-06-24 14:05 UTCEPSS rescore
  23. 2026-06-23 21:33 UTCEPSS rescore
  24. 2026-06-22 14:25 UTCEPSS rescore
  25. 2026-06-22 14:25 UTCEPSS rescore
Show 75 more
  1. 2026-06-21 14:56 UTCEPSS rescore
  2. 2026-06-21 14:56 UTCEPSS rescore
  3. 2026-06-21 01:59 UTCEPSS rescore
  4. 2026-06-19 19:25 UTCEPSS rescore
  5. 2026-06-18 17:52 UTCEPSS rescore
  6. 2026-06-18 17:52 UTCEPSS rescore
  7. 2026-06-17 17:53 UTCEPSS rescore
  8. 2026-06-17 01:29 UTCEG score recompute
  9. 2026-06-17 01:29 UTCGHSA enrichment
  10. 2026-06-16 17:52 UTCEPSS rescore
  11. 2026-06-15 17:49 UTCEPSS rescore
  12. 2026-06-15 02:11 UTCEG score recompute
  13. 2026-06-15 02:11 UTCGHSA enrichment
  14. 2026-06-14 02:50 UTCEG score recompute
  15. 2026-06-14 02:50 UTCGHSA enrichment
  16. 2026-06-13 23:00 UTCEPSS rescore
  17. 2026-06-12 23:43 UTCEG score recompute
  18. 2026-06-12 23:43 UTCGHSA enrichment
  19. 2026-06-12 00:19 UTCEG score recompute
  20. 2026-06-12 00:19 UTCGHSA enrichment
  21. 2026-06-11 14:00 UTCEPSS rescore
  22. 2026-06-11 00:59 UTCEG score recompute
  23. 2026-06-11 00:59 UTCGHSA enrichment
  24. 2026-06-10 22:18 UTCEPSS rescore
  25. 2026-06-10 13:22 UTCEPSS rescore
  26. 2026-06-10 13:22 UTCEPSS rescore
  27. 2026-06-10 01:40 UTCEG score recompute
  28. 2026-06-10 01:40 UTCGHSA enrichment
  29. 2026-06-09 02:22 UTCEG score recompute
  30. 2026-06-09 02:22 UTCGHSA enrichment
  31. 2026-06-08 14:17 UTCEPSS rescore
  32. 2026-06-08 14:17 UTCEPSS rescore
  33. 2026-06-08 03:02 UTCEG score recompute
  34. 2026-06-08 03:02 UTCGHSA enrichment
  35. 2026-06-07 15:25 UTCEPSS rescore
  36. 2026-06-07 15:25 UTCEPSS rescore
  37. 2026-06-07 03:43 UTCEG score recompute
  38. 2026-06-07 03:43 UTCGHSA enrichment
  39. 2026-06-06 13:47 UTCEPSS rescore
  40. 2026-06-06 13:47 UTCEPSS rescore
  41. 2026-06-06 04:24 UTCEG score recompute
  42. 2026-06-06 04:24 UTCGHSA enrichment
  43. 2026-06-05 22:47 UTCEPSS rescore
  44. 2026-06-05 06:10 UTCEPSS rescore
  45. 2026-06-05 06:10 UTCEPSS rescore
  46. 2026-06-05 05:05 UTCEG score recompute
  47. 2026-06-05 05:05 UTCGHSA enrichment
  48. 2026-06-04 13:12 UTCEPSS rescore
  49. 2026-06-04 13:12 UTCEPSS rescore
  50. 2026-06-04 05:46 UTCEG score recompute
  51. 2026-06-04 05:46 UTCGHSA enrichment
  52. 2026-06-03 06:27 UTCEG score recompute
  53. 2026-06-03 06:27 UTCGHSA enrichment
  54. 2026-06-02 20:13 UTCEPSS rescore
  55. 2026-06-02 07:08 UTCEG score recompute
  56. 2026-06-02 07:08 UTCGHSA enrichment
  57. 2026-06-01 13:52 UTCEPSS rescore
  58. 2026-06-01 13:52 UTCEPSS rescore
  59. 2026-06-01 07:46 UTCEG score recompute▲ 5.50
  60. 2026-06-01 07:46 UTCGHSA enrichment
  61. 2026-05-31 22:30 UTCEPSS rescore
  62. 2026-05-31 22:30 UTCEPSS rescore
  63. 2026-05-31 00:16 UTCEPSS rescore
  64. 2026-05-31 00:16 UTCEPSS rescore
  65. 2026-05-29 13:44 UTCEPSS rescore
  66. 2026-05-29 13:44 UTCEPSS rescore
  67. 2026-05-28 13:44 UTCEPSS rescore
  68. 2026-05-28 13:44 UTCEPSS rescore
  69. 2026-05-27 13:40 UTCEPSS rescore
  70. 2026-05-27 13:40 UTCEPSS rescore
  71. 2026-05-26 13:44 UTCEPSS rescore
  72. 2026-05-26 07:18 UTCEPSS rescore
  73. 2026-05-21 22:43 UTCEPSS rescore
  74. 2026-05-20 22:38 UTCEPSS rescore
  75. 2026-05-20 13:38 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-43410?
CVE-2026-43410 is a medium vulnerability published on May 8, 2026. In the Linux kernel, the following vulnerability has been resolved: firmware: stratix10-rsu: Fix NULL pointer dereference when RSU is disabled When the Remote System Update (RSU) isn't enabled in the First Stage Boot Loader (FSBL), the driver encounters a NULL pointer dereference when excute…
When was CVE-2026-43410 disclosed?
CVE-2026-43410 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-2026-43410 actively exploited?
CVE-2026-43410 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-43410?
CVE-2026-43410 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-43410?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43410, 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-2026-43410

Explore →

Is Your Infrastructure Affected by CVE-2026-43410?

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

Start Free Scan →Browse All CVEs