CVE-2022-48890
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-48890
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48890.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-48890
- Related
- Published
- 2024-08-21T07:15:05Z
- Modified
- 2024-09-18T01:00:22Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
scsi: storvsc: Fix swiotlb bounce buffer leak in confidential VM
storvscqueuecommand() maps the scatter/gather list using scsidmamap(), which in a confidential VM allocates swiotlb bounce buffers. If the I/O submission fails in storvscdo_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 scsidmaunmap() in the case of an I/O submission error, which frees the bounce buffer memory.
- References
Affected packages
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source