CVE-2026-43205

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-06. 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:

dpaa2-switch: validate num_ifs to prevent out-of-bounds write

The driver obtains sw_attr.num_ifs from firmware via dpsw_get_attributes() but never validates it against DPSW_MAX_IF (64). This value controls iteration in dpaa2_switch_fdb_get_flood_cfg(), which writes port indices into the fixed-size cfg->if_id[DPSW_MAX_IF] array. When firmware reports num_ifs >= 64, the loop can write past the array bounds.

Add a bound check for num_ifs in dpaa2_switch_init().

dpaa2_switch_fdb_get_flood_cfg() appends the control interface (port num_ifs) after all matched ports. When num_ifs == DPSW_MAX_IF and all ports match the flood filter, the loop fills all 64 slots and the control interface write overflows by one entry.

The check uses >= because num_ifs == DPSW_MAX_IF is also functionally broken.

build_if_id_bitmap() silently drops any ID >= 64: if (id[i] < DPSW_MAX_IF) bmap[id[i] / 64] |= ...

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
4%
KEV
Not listed

Published

May 6, 2026

Last Modified

May 11, 2026

Advisory Details (7)

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

dpaa2-switch: validate num_ifs to prevent out-of-bounds write - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c18493f750208eb4ff1198fc5a02786b8b2d70a6
generic

dpaa2-switch: validate num_ifs to prevent out-of-bounds write - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b690635d4719214892855b79ce018d4b1672ac96
generic

dpaa2-switch: validate num_ifs to prevent out-of-bounds write - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a3034a8d56174dd6464c46823438f25797910a8d
generic

dpaa2-switch: validate num_ifs to prevent out-of-bounds write - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a26dda3bae469c8e4e1b1993ad33dafa32d0fc28
generic

dpaa2-switch: validate num_ifs to prevent out-of-bounds write - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8b841fd529db9faf8bc678d429d4bf4e98b10900
generic

dpaa2-switch: validate num_ifs to prevent out-of-bounds write - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8a5752c6dcc085a3bfc78589925182e4e98468c5
generic

dpaa2-switch: validate num_ifs to prevent out-of-bounds write - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/89764cf44544e943230f5e03b8c40a90da26537c

Vendor Advisories for CVE-2026-43205(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-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-08-23ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ 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-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-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-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-08-23ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-08-23ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-134.134+fips1) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-08-23ubuntu
ubuntulinux-virtual-6.8 (6.8.0-134.134) @ noble2026-08-23ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1057.58~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1029.30) @ noble2026-08-23ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (6.8.0-134.134.1) @ noble2026-08-23ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1032.33) @ noble2026-08-23ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2049.50) @ noble2026-08-23ubuntu
ubuntulinux-tools-raspi-6.8 (6.8.0-1060.64) @ noble2026-08-23ubuntu
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
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-08-23ubuntu
redhatkernel-0:6.12.0-211.18.1.el10_22026-05-28redhat
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 ... 6.19~rc8-1~exp1 (116 versions)6.19.6-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(23)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

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 251 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 16:23 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 20:01 UTCEG score recompute
  20. 2026-08-23 20:01 UTCVendor advisory
  21. 2026-08-23 20:01 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 17:04 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 12:56 UTCEG score recompute
  4. 2026-08-17 12:56 UTCVendor advisory
  5. 2026-08-17 12:56 UTCGHSA enrichment
  6. 2026-08-16 14:56 UTCEPSS rescore
  7. 2026-08-16 04:53 UTCEG score recompute
  8. 2026-08-16 04:53 UTCVendor advisory
  9. 2026-08-16 04:53 UTCGHSA enrichment
  10. 2026-08-16 02:14 UTCEPSS rescore
  11. 2026-08-15 02:11 UTCEG score recompute
  12. 2026-08-15 02:11 UTCVendor advisory
  13. 2026-08-15 02:11 UTCGHSA enrichment
  14. 2026-08-15 01:30 UTCEPSS rescore
  15. 2026-08-14 14:49 UTCVendor advisory
  16. 2026-08-14 14:49 UTCGHSA enrichment
  17. 2026-08-14 03:27 UTCEG score recompute
  18. 2026-08-14 03:27 UTCVendor advisory
  19. 2026-08-14 03:27 UTCGHSA enrichment
  20. 2026-08-13 22:00 UTCEPSS rescore
  21. 2026-08-13 04:23 UTCVendor advisory
  22. 2026-08-13 04:23 UTCGHSA enrichment
  23. 2026-08-12 17:00 UTCEG score recompute
  24. 2026-08-12 17:00 UTCVendor advisory
  25. 2026-08-12 17:00 UTCGHSA enrichment
  26. 2026-08-12 13:51 UTCEPSS rescore
  27. 2026-08-11 16:00 UTCEG score recompute
  28. 2026-08-11 16:00 UTCVendor advisory
  29. 2026-08-11 16:00 UTCGHSA enrichment
  30. 2026-08-11 13:43 UTCEPSS rescore
  31. 2026-08-11 01:32 UTCEG score recompute
  32. 2026-08-11 01:32 UTCVendor advisory
  33. 2026-08-11 01:32 UTCGHSA enrichment
  34. 2026-08-11 00:00 UTCEPSS rescore
  35. 2026-08-10 12:44 UTCVendor advisory
  36. 2026-08-10 12:44 UTCGHSA enrichment
  37. 2026-08-10 01:19 UTCVendor advisory
  38. 2026-08-10 01:19 UTCGHSA enrichment
  39. 2026-08-09 13:57 UTCEG score recompute
  40. 2026-08-09 13:57 UTCVendor advisory
  41. 2026-08-09 13:57 UTCGHSA enrichment
  42. 2026-08-09 13:46 UTCEPSS rescore
  43. 2026-08-09 02:35 UTCEG score recompute
  44. 2026-08-09 02:35 UTCVendor advisory
  45. 2026-08-09 02:35 UTCGHSA enrichment
  46. 2026-08-08 16:37 UTCEPSS rescore
  47. 2026-08-08 09:57 UTCVendor advisory
  48. 2026-08-08 09:57 UTCGHSA enrichment
  49. 2026-08-07 22:35 UTCEG score recompute
  50. 2026-08-07 22:35 UTCVendor advisory
  51. 2026-08-07 22:35 UTCGHSA enrichment
  52. 2026-08-07 11:14 UTCVendor advisory
  53. 2026-08-07 11:13 UTCGHSA enrichment
  54. 2026-08-06 21:32 UTCEG score recompute
  55. 2026-08-06 21:32 UTCVendor advisory
  56. 2026-08-06 21:32 UTCGHSA enrichment
  57. 2026-08-06 13:46 UTCEPSS rescore
  58. 2026-08-06 10:10 UTCVendor advisory
  59. 2026-08-06 10:10 UTCGHSA enrichment
  60. 2026-08-05 22:21 UTCEG score recompute
  61. 2026-08-05 22:21 UTCVendor advisory
  62. 2026-08-05 22:21 UTCGHSA enrichment
  63. 2026-08-05 19:17 UTCEPSS rescore
  64. 2026-08-04 15:10 UTCEPSS rescore
  65. 2026-08-04 10:38 UTCEPSS rescore
  66. 2026-08-03 19:52 UTCEG score recompute
  67. 2026-08-03 19:52 UTCVendor advisory
  68. 2026-08-03 19:52 UTCGHSA enrichment
  69. 2026-08-03 10:36 UTCEPSS rescore
  70. 2026-08-03 03:59 UTCVendor advisory
  71. 2026-08-03 03:59 UTCGHSA enrichment
  72. 2026-08-02 16:30 UTCVendor advisory
  73. 2026-08-02 16:30 UTCGHSA enrichment
  74. 2026-08-02 05:08 UTCEG score recompute
  75. 2026-08-02 05:08 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-43205?
CVE-2026-43205 is a high vulnerability published on May 6, 2026. In the Linux kernel, the following vulnerability has been resolved: dpaa2-switch: validate num_ifs to prevent out-of-bounds write The driver obtains swattr.numifs from firmware via dpswgetattributes() but never validates it against DPSWMAXIF (64). This value controls iteration in…
When was CVE-2026-43205 disclosed?
CVE-2026-43205 was first published in the National Vulnerability Database on May 6, 2026, with the most recent update on May 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43205 actively exploited?
CVE-2026-43205 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 96.4% of all scored CVEs.
What is the CVSS score of CVE-2026-43205?
CVE-2026-43205 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-43205?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43205, 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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