PT-2026-37601 · Linux+2 · Linux Kernel+2

CVE-2026-43261 · Published 2026-05-06 · Updated 2026-07-21

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The TSV110 processor is susceptible to the Spectre-BHB (Branch History Buffer) attack. This issue allows for the leakage of information via branch prediction side channels, which are timing-based vulnerabilities where an attacker observes the time taken to execute instructions to infer data stored in the processor's branch history buffer.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Related Identifiers

CVE-2026-43261

OESA-2026-2416

OESA-2026-2418

OESA-2026-2493

SUSE-SU-2026:22108-1

SUSE-SU-2026:22137-1

SUSE-SU-2026:22433-1

SUSE-SU-2026:22458-1

SUSE-SU-2026:2482-1

SUSE-SU-2026:2591-1

USN-8492-1

USN-8492-2

USN-8492-3

USN-8492-4

USN-8492-5

USN-8497-1

USN-8498-1

USN-8499-1

USN-8575-1

USN-8576-1

Affected Products

Linuxmint

Linux Kernel

Tsv110

References · 1696

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43261.json · Exploit
• https://ubuntu.com/security/CVE-2025-37786 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-53082 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-64173 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-53077 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-38591 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23365 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23076 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8492-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23085 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31747 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23090 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-39764 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43041 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43488 · Security Note