CVE-2026-53280
N/A
N/A
Summary
In the Linux kernel, the following vulnerability has been resolved:
iommu: Fix NULL group->domain dereference in pci_dev_reset_iommu_done()
Local sashiko review pointed it out that group->domain could be NULL when a default domain fails to allocate during the first probe, which can crash at domain->ops->attach_dev dereference in __iommu_attach_device() invoked by pci_dev_reset_iommu_done().
pci_dev_reset_iommu_prepare() is fine as an old_domain pointer can be NULL.
Skip the re-attach in pci_dev_reset_iommu_done() to fix the bug.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | c279e83953d937470f8a6e69b69f62608714f13f < 17194cd0dd236e732d116d50840d795ca50ef196 | affected |
| Linux | Linux | c279e83953d937470f8a6e69b69f62608714f13f < d769711fcddd005f1e654b3bde547140917fe696 | affected |
| Linux | Linux | 7.0 | affected |
| Linux | Linux | 0 < 7.0 | unaffected |
| Linux | Linux | 7.0.10 <= 7.0.* | unaffected |
| Linux | Linux | 7.1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/17194cd0dd236e732d116d50840d795ca50ef196
- https://git.kernel.org/stable/c/d769711fcddd005f1e654b3bde547140917fe696
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