CVE-2024-46794

Name	CVE-2024-46794
Description	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. ]
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	bullseye (security), bullseye	5.10.223-1	fixed
	bookworm	6.1.106-3	vulnerable
	bookworm (security)	6.1.99-1	vulnerable
	sid, trixie	6.10.9-1	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
linux	source	bullseye	(not affected)
linux	source	(unstable)	(unfixed)

[bullseye] - linux <not-affected> (Vulnerable code not present)
https://git.kernel.org/linus/b6fb565a2d15277896583d471b21bc14a0c99661 (6.11-rc7)