CVE-2024-46794: Linux Kernel

Low severity, CVSS 3.3. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: x86/tdx: Fix data leak in mmio_read() The mmio_read() function makes a TDVMCALL to retrieve MMIO data for an address from the VMM. Sean noticed that mmio_read() unintentionally exposes the value of an initialized variable (val) on the stack to the VMM. This variable is only needed as an output value. It did not need to be passed to the VMM in the first place. Do not send the original value of *val to the VMM. [ dhansen: clarify what 'val' is used for. ]

Affected products

• Linux Linux Kernel: up to and including 5.19; from 6.1, before 6.1.110 (fixed in 6.1.110); from 6.6, before 6.6.51 (fixed in 6.6.51); from 6.10, before 6.10.10 (fixed in 6.10.10); version 6.11 only

Published 2024-09-18. Last modified 2026-06-17.