Bug 2446330 (CVE-2026-31812) - CVE-2026-31812 quinn-proto: quinn-proto: Denial of Service via crafted QUIC Initial packet
Summary: CVE-2026-31812 quinn-proto: quinn-proto: Denial of Service via crafted QUIC I...
Keywords:
Status: NEW
Alias: CVE-2026-31812
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
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Depends On: 2446360 2446361 2446362 2446363 2446364 2446365 2446366 2446370 2446371 2446372 2446373 2446374 2446376 2446354 2446355 2446356 2446357 2446358 2446359 2446367 2446368 2446369 2446375
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-10 23:02 UTC by OSIDB Bzimport
Modified: 2026-03-11 00:06 UTC (History)
27 users (show)

Fixed In Version:
Clone Of:
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Last Closed:
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Description OSIDB Bzimport 2026-03-10 23:02:38 UTC 
Quinn is a pure-Rust, async-compatible implementation of the IETF QUIC transport protocol. Prior to 0.11.14, a remote, unauthenticated attacker can trigger a denial of service in applications using vulnerable quinn versions by sending a crafted QUIC Initial packet containing malformed quic_transport_parameters. In quinn-proto parsing logic, attacker-controlled varints are decoded with unwrap(), so truncated encodings cause Err(UnexpectedEnd) and panic. This is reachable over the network with a single packet and no prior trust or authentication. This vulnerability is fixed in 0.11.14.
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