Bug 2549829 (CVE-2026-109349)

Summary: CVE-2026-109349 gix-pack: gix-pack: Denial of Service via crafted pack header
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: bbrownin, rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in gix-pack. A malicious remote server can trigger a Denial of Service (DoS) by returning a crafted pack header declaring version 3 during a repository clone or fetch operation. Because the header decoder triggers an internal assertion failure when encountering this version, the client application crashes immediately, terminating the operation.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-10-12 16:55:15 UTC
gitoxide gix-pack before 0.75.0 contains a reachable assertion in BytesToEntriesIter::new_from_header: the pack header decoder accepts version 3, but a release-enabled assert_eq! requires version 2. A malicious remote can send a 12-byte pack header declaring version 3 to panic the client and abort the clone or fetch.