CVE-2024-40945: iommu: Return right value in iommu_sva_bind_device()
First published: Fri Jul 12 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <5.4.279 | 5.4.279 |
| redhat/kernel | <5.10.221 | 5.10.221 |
| redhat/kernel | <5.15.162 | 5.15.162 |
| redhat/kernel | <6.6.35 | 6.6.35 |
| redhat/kernel | <6.9.6 | 6.9.6 |
| redhat/kernel | <6.10 | 6.10 |
| debian/linux | <=6.1.123-1<=6.1.119-1 | 5.10.223-1 5.10.226-1 6.12.10-1 6.12.11-1 |
| Linux Kernel | >=5.2<5.4.279 | |
| Linux Kernel | >=5.5<5.10.221 | |
| Linux Kernel | >=5.11<5.15.162 | |
| Linux Kernel | >=5.16<6.6.35 | |
| Linux Kernel | >=6.7<6.9.6 | |
| Linux Kernel | =6.10-rc1 | |
| Linux Kernel | =6.10-rc2 |
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Reference Links
- https://git.kernel.org/stable/c/2973b8e7d127754de9013177c41c0b5547406998
- https://git.kernel.org/stable/c/61a96da9649a6b6a1a5d5bde9374b045fdb5c12e
- https://git.kernel.org/stable/c/700f564758882db7c039dfba9443fe762561a3f8
- https://git.kernel.org/stable/c/7388ae6f26c0ba95f70cc96bf9c5d5cb06c908b6
- https://git.kernel.org/stable/c/89e8a2366e3bce584b6c01549d5019c5cda1205e
- https://git.kernel.org/stable/c/cf34f8f66982a36e5cba0d05781b21ec9606b91e
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-40945
- https://nvd.nist.gov/vuln/detail/CVE-2024-40945
- https://launchpad.net/bugs/cve/CVE-2024-40945
- https://security-tracker.debian.org/tracker/CVE-2024-40945
- https://ubuntu.com/security/CVE-2024-40945
- https://git.kernel.org/linus/89e8a2366e3bce584b6c01549d5019c5cda1205e
- https://access.redhat.com/errata/RHSA-2024:9315
- https://bugzilla.redhat.com/show_bug.cgi?id=2297529
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