UBUNTU-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. 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.
02 / AFFECTED SOFTWARE
Affected packages
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16 explicit affected versions
3 explicit affected versions
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26 explicit affected versions
41 explicit affected versions
37 explicit affected versions
12 explicit affected versions
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9 explicit affected versions
44 explicit affected versions
11 explicit affected versions
52 explicit affected versions
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56 explicit affected versions
4 explicit affected versions
1 explicit affected versions
50 explicit affected versions
13 explicit affected versions
43 explicit affected versions
50 explicit affected versions
10 explicit affected versions
14 explicit affected versions
85 explicit affected versions
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74 explicit affected versions
11 explicit affected versions
1 explicit affected versions
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03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/89e8a2366e3bce584b6c01549d5019c5cda1205e
- 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://ubuntu.com/security/CVE-2024-40945
- https://ubuntu.com/security/notices/USN-6999-1
- https://ubuntu.com/security/notices/USN-6999-2
- https://ubuntu.com/security/notices/USN-7003-1
- https://ubuntu.com/security/notices/USN-7003-2
- https://ubuntu.com/security/notices/USN-7003-3
- https://ubuntu.com/security/notices/USN-7003-4
- https://ubuntu.com/security/notices/USN-7003-5
- https://ubuntu.com/security/notices/USN-7004-1
- https://ubuntu.com/security/notices/USN-7005-1
- https://ubuntu.com/security/notices/USN-7005-2
- https://ubuntu.com/security/notices/USN-7006-1
- https://ubuntu.com/security/notices/USN-7007-1
- https://ubuntu.com/security/notices/USN-7007-2
- https://ubuntu.com/security/notices/USN-7007-3
- https://ubuntu.com/security/notices/USN-7008-1
- https://ubuntu.com/security/notices/USN-7009-1
- https://ubuntu.com/security/notices/USN-7009-2
- https://ubuntu.com/security/notices/USN-7019-1
- https://ubuntu.com/security/notices/USN-7029-1
- https://www.cve.org/CVERecord?id=CVE-2024-40945