iommu/vt-d: Fix potential memory leak in intel_setup_irq_remapping()
In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix potential memory leak in intel_setup_irq_remapping() After commit e3beca48a45b ("irqdomain/treewide: Keep firmware node unconditionally allocated"). For tear down scenario, fn is only freed after fail to allocate ir_domain, though it also should be freed in case dmar_enable_qi returns error. Besides free fn, irq_domain and ir_msi_domain need to be removed as well if intel_setup_irq_remapping fails to enable queued invalidation. Improve the rewinding path by add out_free_ir_domain and out_free_fwnode lables per Baolu's suggestion.
02 / AFFECTED SOFTWARE
Affected packages
936 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix potential memory leak in intel_setup_irq_remapping() After commit e3beca48a45b ("irqdomain/treewide: Keep firmware node unconditionally allocated"). For tear down scenario, fn is only freed after fail to allocate ir_domain, though it also should be freed in case dmar_enable_qi returns error. Besides free fn, irq_domain and ir_msi_domain need to be removed as well if intel_setup_irq_remapping fails to enable queued invalidation. Improve the rewinding path by add out_free_ir_domain and out_free_fwnode lables per Baolu's suggestion.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/336d096b62bdc673e852b6b80d5072d7888ce85d
- https://git.kernel.org/stable/c/5c43d46daa0d2928234dd2792ebebc35d29ee2d1
- https://git.kernel.org/stable/c/99e675d473eb8cf2deac1376a0f840222fc1adcf
- https://git.kernel.org/stable/c/9d9995b0371e4e8c18d4f955479e5d47efe7b2d4
- https://git.kernel.org/stable/c/a0c685ba99961b1dd894b2e470e692a539770f6d
- https://git.kernel.org/stable/c/a31cb1f0fb6caf46ffe88c41252b6b7a4ee062d9
- https://git.kernel.org/stable/c/b62eceb5f8f08815fe3f945fc55bbf997c344ecd
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48724.json
- https://nvd.nist.gov/vuln/detail/CVE-2022-48724