CVE-2022-50482
iommu/vt-d: Clean up si_domain in the init_dmars() error path
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Description
In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Clean up si_domain in the init_dmars() error path A splat from kmem_cache_destroy() was seen with a kernel prior to commit ee2653bbe89d ("iommu/vt-d: Remove domain and devinfo mempool") when there was a failure in init_dmars(), because the iommu_domain cache still had objects. While the mempool code is now gone, there still is a leak of the si_domain memory if init_dmars() fails. So clean up si_domain in the init_dmars() error path.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/749bea542b67513e99240dc58bbfc099e842d508
- https://git.kernel.org/stable/c/5cecfe151874b835331efe086bbdcaeaf64f6b90
- https://git.kernel.org/stable/c/724483b585a1b1e063d42ac5aa835707ff2ec165
- https://git.kernel.org/stable/c/d74196bb278b8f8af88e16bd595997dfa3d6fdb0
- https://git.kernel.org/stable/c/0365d6af75f9f2696e94a0fef24a2c8464c037c8
References (7)
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
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