CVE-2023-52762
virtio-blk: fix implicit overflow on virtio_max_dma_size
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Description
In the Linux kernel, the following vulnerability has been resolved: virtio-blk: fix implicit overflow on virtio_max_dma_size The following codes have an implicit conversion from size_t to u32: (u32)max_size = (size_t)virtio_max_dma_size(vdev); This may lead overflow, Ex (size_t)4G -> (u32)0. Once virtio_max_dma_size() has a larger size than U32_MAX, use U32_MAX instead.
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/017278f141141367f7d14b203e930b45b6ffffb9
- https://git.kernel.org/stable/c/472bd4787406bef2e8b41ee4c74d960a06a49a48
- https://git.kernel.org/stable/c/72775cad7f572bb2501f9ea609e1d20e68f0b38b
- https://git.kernel.org/stable/c/d667fe301dcbcb12d1d6494fc4b8abee2cb75d90
- https://git.kernel.org/stable/c/fafb51a67fb883eb2dde352539df939a251851be
References (5)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
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