Out-of-bounds read in Linux kernel - CVE-2026-98362

Vulnerability details

The vulnerability allows a local user to cause incorrect clock rates to be reported to consumers.

The vulnerability exists due to an out-of-bounds read in scpi_dvfs_recalc_rate() in the SCPI clock driver when recalculating a clock rate using an out-of-range DVFS index returned by SCP firmware. A local user can trigger clock-rate recalculation using such an index to cause incorrect clock rates to be reported to consumers.

The SCP firmware may supply the invalid index because it is buggy or returns a stale value.

Affected software

How to mitigate CVE-2026-98362

External References

• https://git.kernel.org/stable/c/0f89e2ac0e945da2ce798f6a61aebf9d291c2e0a
• https://git.kernel.org/stable/c/108c46e8dacc4a0e472a74f98171115d49cbc079
• https://git.kernel.org/stable/c/56b7a9d89c67932bf11b71e3b6d17941fc24a393
• https://git.kernel.org/stable/c/6e3b55823da8ef0d99621efb422cc29f50d7f280
• https://git.kernel.org/stable/c/70f4b78d560e592cbf3325b162424737d032fc1d
• https://git.kernel.org/stable/c/7204095917aeaac89db7377c29a457351a19b076
• https://git.kernel.org/stable/c/a82b274697d0876b478594ca78ad1e6cb062467b
• https://git.kernel.org/stable/c/e1188332a9110cf3635fe286481ee38305b3c2b6

Related Security Bulletins

• Out-of-bounds read in Linux kernel clk driver
• Debian update for linux