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.

Timeline

Scores

EPSS (exploitation in 30 days)

0.26% · top 82% of all CVEs (12 Nov 2026)

CISA SSVC

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

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.

Affected products

• Linux · Linux

  • affected 26b25a2b98e45aeb40eedcedc586ad5034cbd984 – < 700f564758882db7c039dfba9443fe762561a3f8
  • affected 26b25a2b98e45aeb40eedcedc586ad5034cbd984 – < cf34f8f66982a36e5cba0d05781b21ec9606b91e
  • affected 26b25a2b98e45aeb40eedcedc586ad5034cbd984 – < 2973b8e7d127754de9013177c41c0b5547406998
  • affected 26b25a2b98e45aeb40eedcedc586ad5034cbd984 – < 6325eab6c108fed27f60ff51852e3eac0ba23f3f
  • affected 26b25a2b98e45aeb40eedcedc586ad5034cbd984 – < 7388ae6f26c0ba95f70cc96bf9c5d5cb06c908b6
  • affected 26b25a2b98e45aeb40eedcedc586ad5034cbd984 – < 61a96da9649a6b6a1a5d5bde9374b045fdb5c12e
  • affected 26b25a2b98e45aeb40eedcedc586ad5034cbd984 – < 89e8a2366e3bce584b6c01549d5019c5cda1205e

• Linux · Linux

  • affected 5.2
  • unaffected < 5.2
  • unaffected 5.4.279 – ≤ 5.4.*
  • unaffected 5.10.221 – ≤ 5.10.*
  • unaffected 5.15.162 – ≤ 5.15.*
  • unaffected 6.1.129 – ≤ 6.1.*
  • unaffected 6.6.35 – ≤ 6.6.*
  • unaffected 6.9.6 – ≤ 6.9.*
  • unaffected 6.10 – ≤ *

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• EUVD EUVD-2024-38833 (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2024-40945](https://cveledger.app/badge/CVE-2024-40945.svg)](https://cveledger.app/cve/CVE-2024-40945)

Record last updated 15 Oct 2026, 00:45 UTC.