CVE-2025-37748

Name	CVE-2025-37748
Description	In the Linux kernel, the following vulnerability has been resolved: iommu/mediatek: Fix NULL pointer deference in mtk_iommu_device_group Currently, mtk_iommu calls during probe iommu_device_register before the hw_list from driver data is initialized. Since iommu probing issue fix, it leads to NULL pointer dereference in mtk_iommu_device_group when hw_list is accessed with list_first_entry (not null safe). So, change the call order to ensure iommu_device_register is called after the driver data are initialized.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-4193-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	bullseye	5.10.223-1	fixed
	bullseye (security)	5.10.237-1	fixed
	bookworm	6.1.137-1	fixed
	bookworm (security)	6.1.140-1	fixed
	trixie	6.12.27-1	fixed
	sid	6.12.30-1	fixed
linux-6.1 (PTS)	bullseye (security)	6.1.137-1~deb11u1	fixed

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

Package	Type	Release	Fixed Version	Origin
linux	source	bullseye	(not affected)
linux	source	bookworm	6.1.135-1
linux	source	(unstable)	6.12.25-1
linux-6.1	source	bullseye	6.1.137-1~deb11u1	DLA-4193-1

[bullseye] - linux <not-affected> (Vulnerable code not present)
https://git.kernel.org/linus/38e8844005e6068f336a3ad45451a562a0040ca1 (6.15-rc2)