CVE-2022-48890
- Source
- https://cve.org/CVERecord?id=CVE-2022-48890
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-48890.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2022-48890
- Downstream
- Related
- Published
- 2024-08-21T06:10:22Z
- Modified
- 2026-08-12T03:30:14Z
- Summary
- scsi: storvsc: Fix swiotlb bounce buffer leak in confidential VM
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
scsi: storvsc: Fix swiotlb bounce buffer leak in confidential VM
storvsc_queuecommand() maps the scatter/gather list using scsi_dma_map(), which in a confidential VM allocates swiotlb bounce buffers. If the I/O submission fails in storvsc_do_io(), the I/O is typically retried by higher level code, but the bounce buffer memory is never freed. The mostly like cause of I/O submission failure is a full VMBus channel ring buffer, which is not uncommon under high I/O loads. Eventually enough bounce buffer memory leaks that the confidential VM can't do any I/O. The same problem can arise in a non-confidential VM with kernel boot parameter swiotlb=force.
Fix this by doing scsi_dma_unmap() in the case of an I/O submission error, which frees the bounce buffer memory.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48890.json" }- References
-
- https://git.kernel.org/stable/c/67ff3d0a49f3d445c3922e30a54e03c161da561e
- https://git.kernel.org/stable/c/87c71e88f6a6619ffb1ff88f84dff48ef6d57adb
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48890.json
- https://nvd.nist.gov/vuln/detail/CVE-2022-48890
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git