CVE-2026-43261

A flaw was found in the Linux kernel. This vulnerability affects systems running on TSV110 processors, making them susceptible to the Spectre-BHB (Branch History Buffer) attack. A local attacker could exploit this side-channel vulnerability to potentially leak sensitive information by observing patterns in branch prediction. This issue can lead to unauthorized disclosure of data.

Red Hat acknowledges the upstream Linux kernel correction for «arm64» as described in COMMENT_ZERO. Fixes are delivered through standard kernel errata for supported products. Operational exposure depends on whether this subsystem or driver is active in your configuration.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.