CVE-2024-40945
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.
Does this matter?
Lower severity and a low EPSS score (0.26%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.26% probability · 17th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/2973b8e7d127754de9013177c41c0b5547406998Patch
- https://git.kernel.org/stable/c/61a96da9649a6b6a1a5d5bde9374b045fdb5c12ePatch
- https://git.kernel.org/stable/c/6325eab6c108fed27f60ff51852e3eac0ba23f3f
- https://git.kernel.org/stable/c/700f564758882db7c039dfba9443fe762561a3f8Patch
- https://git.kernel.org/stable/c/7388ae6f26c0ba95f70cc96bf9c5d5cb06c908b6Patch
- https://git.kernel.org/stable/c/89e8a2366e3bce584b6c01549d5019c5cda1205ePatch
- https://git.kernel.org/stable/c/cf34f8f66982a36e5cba0d05781b21ec9606b91ePatch
- https://git.kernel.org/stable/c/2973b8e7d127754de9013177c41c0b5547406998Patch
- https://git.kernel.org/stable/c/61a96da9649a6b6a1a5d5bde9374b045fdb5c12ePatch
- https://git.kernel.org/stable/c/700f564758882db7c039dfba9443fe762561a3f8Patch
- https://git.kernel.org/stable/c/7388ae6f26c0ba95f70cc96bf9c5d5cb06c908b6Patch
- https://git.kernel.org/stable/c/89e8a2366e3bce584b6c01549d5019c5cda1205ePatch
- https://git.kernel.org/stable/c/cf34f8f66982a36e5cba0d05781b21ec9606b91ePatch
- https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-355557.html
- https://cert-portal.siemens.com/productcert/html/ssa-613116.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.