AZL-107093

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Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-107093.json
JSON Data
https://api.osv.dev/v1/vulns/AZL-107093
Upstream
  • CVE-2026-78663
Published
2026-10-08T23:17:03Z
Modified
2026-10-12T05:33:09Z
Summary
CVE-2026-78663 affecting package kata-containers-preview 3.27.0~preview2-2
Details

The HTTP/2 server can refund connection-level flow control twice for the same data: Once when a client resets a stream (refunding data for any sent-but-unread portion of the stream), and again when a request handler reads the buffered data. A malicious client can exploit this to bypass the configured connection-level flow control limit (MaxReceiveBufferPerConnection). Total buffered data is still limited by the concurrent stream limit and stream-level flow control.

References

Affected packages

Azure Linux:3 / kata-containers-preview

Package

Name
kata-containers-preview
Purl
pkg:rpm/azure-linux/kata-containers-preview

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Last Affected
3.27.0~preview2-2

Database specific

source
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-107093.json"