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CVE-2024-40945 In the Linux kernel, the following vulnerability has been resolved: iommu: Return right value in iommu_sva_bind_device()…

Description

In the Linux kernel, the following vulnerability has been resolved: iommu: Return right value in iommu_sva_bind_device() iommu_sva_bind_device() should return either a sva bond handle or an ERR_PTR value in error cases. Existing drivers (idxd and uacce) only check the return value with IS_ERR(). This could potentially lead to a kernel NULL pointer dereference issue if the function returns NULL instead of an error pointer. In reality, this doesn't cause any problems because iommu_sva_bind_device() only returns NULL when the kernel is not configured with CONFIG_IOMMU_SVA. In this case, iommu_dev_enable_feature(dev, IOMMU_DEV_FEAT_SVA) will return an error, and the device drivers won't call iommu_sva_bind_device() at all.

Affected products and versions

Product	Affected versions	Fixed in
Linux 6.10	earliest → < 6.10	6.10
Linux 6.9	earliest → < 6.9.6	6.9.6
Linux 6.6	earliest → < 6.6.35	6.6.35
Linux 6.1	earliest → < 6.1.129	6.1.129
Linux 5.15	earliest → < 5.15.162	5.15.162
Linux 5.10	earliest → < 5.10.221	5.10.221
Linux 5.4	earliest → < 5.4.279	5.4.279
Linux	5.2	No fix stated
RUGGEDCOM RST2428P 3.1	earliest → < 3.1	3.1

Show the 3 other branches

Product	Affected versions	Fixed in
SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family	Versions not published
SCALANCE XCM-/XRM-/XCH-/XRH-300 family 3.1	earliest → < 3.1	3.1
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem	Versions not published