CVE-2022-49002
N/A
N/A
Summary
In the Linux kernel, the following vulnerability has been resolved:
iommu/vt-d: Fix PCI device refcount leak in dmar_dev_scope_init()
for_each_pci_dev() is implemented by pci_get_device(). The comment of pci_get_device() says that it will increase the reference count for the returned pci_dev and also decrease the reference count for the input pci_dev @from if it is not NULL.
If we break for_each_pci_dev() loop with pdev not NULL, we need to call pci_dev_put() to decrease the reference count. Add the missing pci_dev_put() for the error path to avoid reference count leak.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 2e45528930388658603ea24d49cf52867b928d3e < d47bc9d7bcdbb9adc9703513d964b514fee5b0bf | affected |
| Linux | Linux | 2e45528930388658603ea24d49cf52867b928d3e < 71c4a621985fc051ab86d3a86c749069a993fcb2 | affected |
| Linux | Linux | 2e45528930388658603ea24d49cf52867b928d3e < 876d7bfb89273997056220029ff12b1c2cc4691d | affected |
| Linux | Linux | 2e45528930388658603ea24d49cf52867b928d3e < cbdd83bd2fd67142b03ce9dbdd1eab322ff7321f | affected |
| Linux | Linux | 2e45528930388658603ea24d49cf52867b928d3e < a5c65cd56aed027f8a97fda8b691caaeb66d115e | affected |
| Linux | Linux | 2e45528930388658603ea24d49cf52867b928d3e < bdb613ef179ad4bb9d56a2533e9b30e434f1dfb7 | affected |
| Linux | Linux | 2e45528930388658603ea24d49cf52867b928d3e < 2a8f7b90681472948de172dbbf5a54cd342870aa | affected |
| Linux | Linux | 2e45528930388658603ea24d49cf52867b928d3e < 4bedbbd782ebbe7287231fea862c158d4f08a9e3 | affected |
| Linux | Linux | 3.15 | affected |
| Linux | Linux | 0 < 3.15 | unaffected |
| Linux | Linux | 4.9.335 <= 4.9.* | unaffected |
| Linux | Linux | 4.14.301 <= 4.14.* | unaffected |
| Linux | Linux | 4.19.268 <= 4.19.* | unaffected |
| Linux | Linux | 5.4.226 <= 5.4.* | unaffected |
| Linux | Linux | 5.10.158 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.82 <= 5.15.* | unaffected |
| Linux | Linux | 6.0.12 <= 6.0.* | unaffected |
| Linux | Linux | 6.1 <= * | unaffected |
Weaknesses
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://git.kernel.org/stable/c/d47bc9d7bcdbb9adc9703513d964b514fee5b0bf
- https://git.kernel.org/stable/c/71c4a621985fc051ab86d3a86c749069a993fcb2
- https://git.kernel.org/stable/c/876d7bfb89273997056220029ff12b1c2cc4691d
- https://git.kernel.org/stable/c/cbdd83bd2fd67142b03ce9dbdd1eab322ff7321f
- https://git.kernel.org/stable/c/a5c65cd56aed027f8a97fda8b691caaeb66d115e
- https://git.kernel.org/stable/c/bdb613ef179ad4bb9d56a2533e9b30e434f1dfb7
- https://git.kernel.org/stable/c/2a8f7b90681472948de172dbbf5a54cd342870aa
- https://git.kernel.org/stable/c/4bedbbd782ebbe7287231fea862c158d4f08a9e3
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