Bug 2466634 (CVE-2026-44029)

Summary: CVE-2026-44029 nix: absolute path traversal when unpacking archives to disk
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: CLOSED ERRATA QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: nix-2.34.7-2.fc45 nix-2.34.7-2.fc44 nix-2.31.5-1.fc43 nix-2.31.5-1.fc42 Doc Type: ---
Doc Text:
A flaw was found in Nix. Writing to arbitrary files can occur via "nix-prefetch-url --unpack" or "nix store prefetch-file --unpack" directory traversal.
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Clone Of: Environment:
Last Closed: 2026-05-16 07:06:55 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2478030, 2478031    
Bug Blocks:    

Description OSIDB Bzimport 2026-05-05 02:01:25 UTC 
An issue was discovered in Nix before 2.34.7. Writing to arbitrary files can occur via "nix-prefetch-url --unpack" or "nix store prefetch-file --unpack" directory traversal. The fixed versions are 2.34.7, 2.33.6, 2.32.8, 2.31.5, 2.30.5, 2.29.4, and 2.28.7 (introduced in 2.24.7);
Comment 3 Jens Petersen 2026-05-16 07:06:55 UTC 
Fixed in 2.34.7 and 2.31.5