CVE-2024-40945
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rhel | 9 | fixed | |
| sles | affected | | |
| debian | bookworm | fixed | 6.1.129-1 |
| debian | bullseye | fixed | 5.10.221-1 |
| debian | forky | fixed | 6.9.7-1 |
| debian | sid | fixed | 6.9.7-1 |
| debian | trixie | fixed | 6.9.7-1 |
| linux-kernel | affected | 5.4.279 | |
| linux-kernel | 6.10 | affected | |
References
- https://access.redhat.com/errata/RHSA-2024:9315
- https://git.kernel.org/stable/c/2973b8e7d127754de9013177c41c0b5547406998
- https://git.kernel.org/stable/c/61a96da9649a6b6a1a5d5bde9374b045fdb5c12e
- https://git.kernel.org/stable/c/6325eab6c108fed27f60ff51852e3eac0ba23f3f
- 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://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-355557.html
- https://cert-portal.siemens.com/productcert/html/ssa-613116.html
- https://www.suse.com/security/cve/CVE-2024-40945.html
- https://security-tracker.debian.org/tracker/CVE-2024-40945
CWEs
CWE-476
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.