CVE-2023-52762: virtio-blk: fix implicit overflow on virtio_max_dma_size
First published: Tue May 21 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <5.15.140 | 5.15.140 |
| redhat/kernel | <6.1.64 | 6.1.64 |
| redhat/kernel | <6.5.13 | 6.5.13 |
| redhat/kernel | <6.6.3 | 6.6.3 |
| redhat/kernel | <6.7 | 6.7 |
| IBM Security Verify Governance - Identity Manager | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Software Stack | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Virtual Appliance | <=ISVG 10.0.2 | |
| IBM Security Verify Governance Identity Manager Container | <=ISVG 10.0.2 |
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Reference Links
- 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
- https://access.redhat.com/security/cve/CVE-2023-52762
- https://lore.kernel.org/linux-cve-announce/2024052147-CVE-2023-52762-fe90@gregkh/T
- https://access.redhat.com/errata/RHSA-2024:5102
- https://access.redhat.com/errata/RHSA-2024:5101
- https://access.redhat.com/errata/RHSA-2024:9315
- https://bugzilla.redhat.com/show_bug.cgi?id=2282623
- https://www.ibm.com/support/pages/node/7230443 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2023-52762?
CVE-2023-52762 is considered a high-severity vulnerability due to the potential for overflow issues that may affect system stability.
How do I fix CVE-2023-52762?
To address CVE-2023-52762, upgrade to kernel versions 5.15.140, 6.1.64, 6.5.13, 6.6.3, or 6.7 as specified.
What systems are affected by CVE-2023-52762?
CVE-2023-52762 affects specific versions of the Linux kernel, particularly those used in Red Hat systems and IBM Security Verify Governance products.
What does CVE-2023-52762 exploit?
CVE-2023-52762 exploits an implicit conversion issue that can lead to size overflow during virtio block device operations.
Is there a known workaround for CVE-2023-52762?
Currently, there are no known workarounds for CVE-2023-52762 and applying the updates is the recommended solution.
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