Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Fix undefined behavior in devid_write debugfs function When for_each_pci_segment() loop completes without finding a matching segment, the pci_seg pointer is not NULL but points to an invalid memory location (the list head). Accessing pci_seg->id after the loop causes undefined behavior. Fix this by handling the successful case inside the loop and returning -EINVAL after the loop if no matching segment is found.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 2e98940f123d9c69d4759078aea9a536244c98d3 before 8aabe0fba01486b5d893e708b05a8fa7f1b7efbb; affected 2e98940f123d9c69d4759078aea9a536244c98d3 before 99d42aef089a07cfb1d404a7227ac9dc7628b497; affected 2e98940f123d9c69d4759078aea9a536244c98d3 before 843e149989665f8309ad2efe6048dc76591e1f94 |
| Linux / Linux | affected 6.17; unaffected 0 before 6.17; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.