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RUSTSEC-2026-0185

Remote memory exhaustion in quinn-proto from unbounded out-of-order stream reassembly

Reported
Issued
Package
quinn-proto (crates.io)
Type
Vulnerability
Categories
Keywords
#oom
Aliases
References
CVSS Score
7.5 HIGH
CVSS Details
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality Impact
None
Integrity Impact
None
Availability Impact
High
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Patched
  • >=0.11.15

Description

The Assembler component that assembles unordered stream fragments into consecutive chunks of the stream incurs some overhead for non-contiguous fragments. Readers that read from a RecvStream in order (through an AsyncRead impl for example) will be sensitive to peers that send fragments while leaving out early parts of the stream, and in particular, fragments with many gaps (because these cannot be defragmented). In such a scenario, the receiving connection suffers from high buffer overhead, enabling memory exhaustion.

Advisory available under CC0-1.0 license.