CVE-2026-43261 Details
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.
A vulnerability exists in the Linux kernel's handling of the TSV110 processor, which is susceptible to the Spectre-BHB (Branch History Buffer) attack. This vulnerability can be exploited to leak information through branch prediction side channels. The issue arises because the TSV110 processor's MIDR (Main ID Register) was not included in the software mitigation list, leaving it exposed to potential attacks.
Users can upgrade to a patched version of the Linux kernel that includes the TSV110 MIDR in the Spectre-BHB mitigation list. The latest stable version of the Linux kernel can be downloaded from the official Linux kernel website or through the Linux kernel Git repository.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/598c11dd4f4a9de31d854fcb9702f54c1c70f0d0 | kernel.org | Patch |
| https://git.kernel.org/stable/c/5dbe1f14359735fa50ba0dd4a496125b5bc7f422 | kernel.org | Patch |
| https://git.kernel.org/stable/c/a8d0ad5d990b050a6db74218a34b5529085e16b8 | kernel.org | Patch |
| https://git.kernel.org/stable/c/ad0c356cae164ed5dbd1f4cfd438e46faa5292cb | kernel.org | Patch |
| https://git.kernel.org/stable/c/cccf96c49f61e47d9332d6a4d1c7fe9a2df44440 | kernel.org | Patch |
| https://git.kernel.org/stable/c/e3baa5d4b361276efeb87b20d8beced451a7dbd5 | kernel.org | Patch |
| https://git.kernel.org/stable/c/fd51d47fcacec3ca027eb65d8c44853d3b6cea95 | kernel.org | Patch |
| https://git.kernel.org/stable/c/fd7e360845d331f542854d552469544182e61134 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.10.105, < 5.10.252 >= 5.11, < 5.15.202 >= 5.16, < 6.1.165 >= 6.2, < 6.6.128 >= 6.7, < 6.12.75 >= 6.13, < 6.18.16 >= 6.19, < 6.19.6 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 8, 2026 | Initial Analysis | [email protected] |
| May 6, 2026 | New CVE Received | kernel.org |