CVE-2024-40945

Advisory lineage Upstream: 0 Downstream: 32
Modified
Published: 12 Jul 2024, 12:25
Last modified:12 May 2026, 11:55

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.01% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

12 Jul 2024, 12:25
Published
Vulnerability first disclosed
12 May 2026, 11:55
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.01%• Percentile: 2%

Techniques & Countermeasures

  • CWE-476•NULL Pointer Dereference

    The product dereferences a pointer that it expects to be valid but is NULL.

Affected Systems

  • linux•linux

    ≥ 26b25a2b98e45aeb40eedcedc586ad5034cbd984, < 700f564758882db7c039dfba9443fe762561a3f8 | ≥ 26b25a2b98e45aeb40eedcedc586ad5034cbd984, < cf34f8f66982a36e5cba0d05781b21ec9606b91e | ≥ 26b25a2b98e45aeb40eedcedc586ad5034cbd984, < 2973b8e7d127754de9013177c41c0b5547406998 | ≥ 26b25a2b98e45aeb40eedcedc586ad5034cbd984, < 6325eab6c108fed27f60ff51852e3eac0ba23f3f | ≥ 26b25a2b98e45aeb40eedcedc586ad5034cbd984, < 7388ae6f26c0ba95f70cc96bf9c5d5cb06c908b6 | ≥ 26b25a2b98e45aeb40eedcedc586ad5034cbd984, < 61a96da9649a6b6a1a5d5bde9374b045fdb5c12e | ≥ 26b25a2b98e45aeb40eedcedc586ad5034cbd984, < 89e8a2366e3bce584b6c01549d5019c5cda1205e | 5.2

  • linux•linux_kernel

    ≥ 5.2, < 5.4.279 | ≥ 5.5, < 5.10.221 | ≥ 5.11, < 5.15.162 | ≥ 5.16, < 6.6.35 | ≥ 6.7, < 6.9.6 | 6.10:rc1 | 6.10:rc2

References (11)