CVE-2026-43261
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Spectre-BHB Mitigation Added for TSV110 in Linux Kernel

Publication date: 2026-05-06

Last updated on: 2026-05-08

Assigner: kernel.org

Description
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.
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Meta Information
Published
2026-05-06
Last Modified
2026-05-08
Generated
2026-06-16
AI Q&A
2026-05-06
EPSS Evaluated
2026-06-15
NVD
CVE-2026-43261
EUVD
EUVD-2026-27822
Affected Vendors & Products
Showing 7 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 6.2 (inc) to 6.6.128 (exc)
linux linux_kernel From 6.7 (inc) to 6.12.75 (exc)
linux linux_kernel From 6.13 (inc) to 6.18.16 (exc)
linux linux_kernel From 6.19 (inc) to 6.19.6 (exc)
linux linux_kernel From 5.11 (inc) to 5.15.202 (exc)
linux linux_kernel From 5.16 (inc) to 6.1.165 (exc)
linux linux_kernel From 5.10.105 (inc) to 5.10.252 (exc)
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability affects the TSV110 processor in the Linux kernel. It is related to the Spectre-BHB (Branch History Buffer) attack, which exploits branch prediction side channels to leak information. The vulnerability arises because the processor's branch prediction mechanism can be manipulated to reveal sensitive data. The Linux kernel has been updated to include software mitigation for this processor by adding its MIDR to the mitigation list.

Impact Analysis

This vulnerability can potentially allow attackers to leak sensitive information from the affected system by exploiting the branch prediction side channels of the TSV110 processor. Such information leakage could compromise confidentiality and lead to unauthorized access to private data.

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