CVE-2026-43261

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-05-06. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
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:

arm64: Add support for TSV110 Spectre-BHB mitigation

The TSV110 processor is vulnerable to the Spectre-BHB (Branch History Buffer) attack, which can be exploited to leak information through branch prediction side channels. This commit adds the MIDR of TSV110 to the list for software mitigation.

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
3%
KEV
Not listed

Published

May 6, 2026

Last Modified

May 8, 2026

Advisory Details (8)

Auto-updated Jun 14, 2026
No patch confirmed yet.
generic

arm64: Add support for TSV110 Spectre-BHB mitigation - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fd7e360845d331f542854d552469544182e61134
generic

arm64: Add support for TSV110 Spectre-BHB mitigation - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fd51d47fcacec3ca027eb65d8c44853d3b6cea95
generic

arm64: Add support for TSV110 Spectre-BHB mitigation - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e3baa5d4b361276efeb87b20d8beced451a7dbd5
generic

arm64: Add support for TSV110 Spectre-BHB mitigation - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cccf96c49f61e47d9332d6a4d1c7fe9a2df44440
generic

arm64: Add support for TSV110 Spectre-BHB mitigation - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ad0c356cae164ed5dbd1f4cfd438e46faa5292cb
generic

arm64: Add support for TSV110 Spectre-BHB mitigation - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a8d0ad5d990b050a6db74218a34b5529085e16b8
generic

arm64: Add support for TSV110 Spectre-BHB mitigation - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5dbe1f14359735fa50ba0dd4a496125b5bc7f422
generic

arm64: Add support for TSV110 Spectre-BHB mitigation - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/598c11dd4f4a9de31d854fcb9702f54c1c70f0d0

Patch Availability(25)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-6.8 (6.8.0-134.134) @ noble2026-08-23ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1058.61.1) @ noble2026-08-23ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (6.8.0-134.134.1) @ noble2026-08-23ubuntu
ubuntulinux-tools-nvidia-tegra-rt-6.8 (6.8.0-1029.30) @ 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-fips-6.8 (6.8.0-134.134+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-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-azure-edge (6.8.0-1063.71~22.04.1) @ jammy2026-08-23ubuntu
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-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-08-23ubuntu
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 @ 5.10.252—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
linux5.10.103-1 ... 5.10.92-2 (53 versions)5.10.257-1—
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—

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 6× in last 7d / 27× 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 174 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. 2026-09-07 16:01 UTCEPSS rescore
  8. 2026-09-06 13:47 UTCEPSS rescore
  9. 2026-09-04 05:06 UTCEPSS rescore
  10. 2026-09-02 14:12 UTCEPSS rescore
  11. 2026-09-01 13:54 UTCEPSS rescore
  12. 2026-08-30 19:17 UTCEPSS rescore
  13. 2026-08-30 01:22 UTCEPSS rescore
  14. 2026-08-28 21:41 UTCEPSS rescore
  15. 2026-08-27 14:25 UTCEPSS rescore
  16. 2026-08-26 14:46 UTCEPSS rescore
  17. 2026-08-25 13:49 UTCEPSS rescore
  18. 2026-08-23 19:54 UTCEG score recompute
  19. 2026-08-23 19:54 UTCVendor advisory
  20. 2026-08-23 19:53 UTCGHSA enrichment
  21. 2026-08-21 23:49 UTCEPSS rescore
  22. 2026-08-20 22:55 UTCEPSS rescore
  23. 2026-08-19 17:04 UTCEPSS rescore
  24. 2026-08-18 13:48 UTCEPSS rescore
  25. 2026-08-17 13:47 UTCEPSS rescore
Show 75 more
  1. 2026-08-17 12:54 UTCVendor advisory
  2. 2026-08-17 12:54 UTCGHSA enrichment
  3. 2026-08-16 04:52 UTCEG score recompute
  4. 2026-08-16 04:52 UTCVendor advisory
  5. 2026-08-16 04:52 UTCGHSA enrichment
  6. 2026-08-16 02:14 UTCEPSS rescore
  7. 2026-08-15 01:30 UTCEPSS rescore
  8. 2026-08-14 03:26 UTCEG score recompute
  9. 2026-08-14 03:26 UTCVendor advisory
  10. 2026-08-14 03:26 UTCGHSA enrichment
  11. 2026-08-13 22:00 UTCEPSS rescore
  12. 2026-08-12 17:00 UTCEG score recompute
  13. 2026-08-12 17:00 UTCVendor advisory
  14. 2026-08-12 17:00 UTCGHSA enrichment
  15. 2026-08-12 13:51 UTCEPSS rescore
  16. 2026-08-11 13:43 UTCEPSS rescore
  17. 2026-08-11 06:49 UTCEG score recompute
  18. 2026-08-11 06:49 UTCVendor advisory
  19. 2026-08-11 06:49 UTCGHSA enrichment
  20. 2026-08-11 00:00 UTCEPSS rescore
  21. 2026-08-10 05:34 UTCEG score recompute
  22. 2026-08-10 05:34 UTCVendor advisory
  23. 2026-08-10 05:34 UTCGHSA enrichment
  24. 2026-08-09 13:46 UTCEPSS rescore
  25. 2026-08-09 04:21 UTCEG score recompute
  26. 2026-08-09 04:21 UTCVendor advisory
  27. 2026-08-09 04:21 UTCGHSA enrichment
  28. 2026-08-08 16:37 UTCEPSS rescore
  29. 2026-08-08 03:07 UTCEG score recompute
  30. 2026-08-08 03:07 UTCVendor advisory
  31. 2026-08-08 03:07 UTCGHSA enrichment
  32. 2026-08-07 01:53 UTCEG score recompute
  33. 2026-08-07 01:53 UTCVendor advisory
  34. 2026-08-07 01:53 UTCGHSA enrichment
  35. 2026-08-06 13:46 UTCEPSS rescore
  36. 2026-08-05 22:20 UTCEG score recompute
  37. 2026-08-05 22:20 UTCVendor advisory
  38. 2026-08-05 22:20 UTCGHSA enrichment
  39. 2026-08-05 19:17 UTCEPSS rescore
  40. 2026-08-04 15:10 UTCEPSS rescore
  41. 2026-08-04 10:38 UTCEPSS rescore
  42. 2026-08-03 19:51 UTCEG score recompute
  43. 2026-08-03 19:51 UTCVendor advisory
  44. 2026-08-03 19:51 UTCGHSA enrichment
  45. 2026-08-03 10:36 UTCEPSS rescore
  46. 2026-08-02 05:06 UTCEG score recompute
  47. 2026-08-02 05:06 UTCVendor advisory
  48. 2026-08-02 05:06 UTCGHSA enrichment
  49. 2026-08-01 04:16 UTCEPSS rescore
  50. 2026-07-30 16:28 UTCEPSS rescore
  51. 2026-07-30 01:30 UTCEPSS rescore
  52. 2026-07-28 15:36 UTCEPSS rescore
  53. 2026-07-27 14:13 UTCEPSS rescore
  54. 2026-07-26 14:54 UTCEPSS rescore
  55. 2026-07-26 14:54 UTCEPSS rescore
  56. 2026-07-25 14:18 UTCEPSS rescore
  57. 2026-07-24 14:17 UTCEPSS rescore
  58. 2026-07-23 14:18 UTCEPSS rescore
  59. 2026-07-23 03:14 UTCEG score recompute
  60. 2026-07-22 14:08 UTCEPSS rescore
  61. 2026-07-21 15:24 UTCEPSS rescore
  62. 2026-07-20 17:08 UTCEPSS rescore
  63. 2026-07-19 17:18 UTCOSV refresh
  64. 2026-07-19 14:31 UTCEPSS rescore
  65. 2026-07-19 02:29 UTCEPSS rescore
  66. 2026-07-18 10:04 UTCEPSS rescore
  67. 2026-07-16 17:03 UTCEPSS rescore
  68. 2026-07-15 16:57 UTCEPSS rescore
  69. 2026-07-15 02:00 UTCEPSS rescore
  70. 2026-07-13 22:30 UTCEPSS rescore
  71. 2026-07-13 06:13 UTCEPSS rescore
  72. 2026-07-12 05:46 UTCEPSS rescore
  73. 2026-07-11 08:27 UTCEPSS rescore
  74. 2026-07-09 19:10 UTCEPSS rescore
  75. 2026-07-08 15:16 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-43261?
CVE-2026-43261 is a medium vulnerability published on May 6, 2026. In the Linux kernel, the following vulnerability has been resolved: arm64: Add support for TSV110 Spectre-BHB mitigation The TSV110 processor is vulnerable to the Spectre-BHB (Branch History Buffer) attack, which can be exploited to leak information through branch prediction side channels. This…
When was CVE-2026-43261 disclosed?
CVE-2026-43261 was first published in the National Vulnerability Database on May 6, 2026, with the most recent update on May 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43261 actively exploited?
CVE-2026-43261 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 97.2% of all scored CVEs.
What is the CVSS score of CVE-2026-43261?
CVE-2026-43261 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-43261?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43261, 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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