Bug 2369741 (CVE-2025-29785)

Summary:	CVE-2025-29785 quic-go: quic-go Has Panic in Path Probe Loss Recovery Handling
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aarif, adudiak, alcohan, aprice, bdettelb, caswilli, cmah, crizzo, dkuc, dnakabaa, doconnor, fjansen, gparvin, haoli, hkataria, jajackso, jbuscemi, jcammara, jdobes, jmitchel, jneedle, jsamir, jsherril, jtanner, jvasik, jwendell, kaycoth, kegrant, kgaikwad, kholdawa, koliveir, kshier, lcouzens, mabashia, mpierce, mskarbek, njean, oezr, omaciel, orabin, owatkins, pahickey, pbraun, rblanco, rcernich, rhaigner, rochandr, sdawley, shvarugh, simaishi, smcdonal, stcannon, sthirugn, teagle, tfister, thavo, vkrizan, vmugicag, yguenane
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in quic-go. This vulnerability allows a malicious QUIC client to cause a nil-pointer dereference, leading to an application-level denial of service via specially crafted ACK packets following spoofed path validation probes.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
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Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2369762, 2369764, 2369763
Bug Blocks:

Description OSIDB Bzimport 2025-06-02 11:01:07 UTC

quic-go is an implementation of the QUIC protocol in Go. The loss recovery logic for path probe packets that was added in the v0.50.0 release can be used to trigger a nil-pointer dereference by a malicious QUIC client. In order to do so, the attacker first sends valid QUIC packets from different remote addresses (thereby triggering the newly added path validation logic: the server sends path probe packets), and then sending ACKs for packets received from the server specifically crafted to trigger the nil-pointer dereference. v0.50.1 contains a patch that fixes the vulnerability. This release contains a test that generates random sequences of sent packets (both regular and path probe packets), that was used to verify that the patch actually covers all corner cases. No known workarounds are available.