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CVE-2024-40945

iommu: Return right value in iommu_sva_bind_device()

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.4.279, 5.10.221, 5.15.162, 6.1.129, 6.6.35, and 1 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • Linux Linux

    From 26b25a2b98e45aeb40eedcedc586ad5034cbd984 · fixed in 700f564758882db7c039dfba9443fe762561a3f8; From 26b25a2b98e45aeb40eedcedc586ad5034cbd984 · fixed in cf34f8f66982a36e5cba0d05781b21ec9606b91e; From 26b25a2b98e45aeb40eedcedc586ad5034cbd984 · fixed in 2973b8e7d127754de9013177c41c0b5547406998; From 26b25a2b98e45aeb40eedcedc586ad5034cbd984 · fixed in 6325eab6c108fed27f60ff51852e3eac0ba23f3f; From 26b25a2b98e45aeb40eedcedc586ad5034cbd984 · fixed in 7388ae6f26c0ba95f70cc96bf9c5d5cb06c908b6; From 26b25a2b98e45aeb40eedcedc586ad5034cbd984 · fixed in 61a96da9649a6b6a1a5d5bde9374b045fdb5c12e; From 26b25a2b98e45aeb40eedcedc586ad5034cbd984 · fixed in 89e8a2366e3bce584b6c01549d5019c5cda1205e

  • Linux Linux

    5.2

  • KernelLinux

    From 5.2.0 · fixed in 5.4.279; From 5.5.0 · fixed in 5.10.221; From 5.11.0 · fixed in 5.15.162; From 5.16.0 · fixed in 6.1.129; From 6.2.0 · fixed in 6.6.35; From 6.7.0 · fixed in 6.9.6

References 7

git.kernel.org