Bug 2549954 (CVE-2026-109380) - CVE-2026-109380 modern-tar: modern-tar: Denial of Service via memory exhaustion from crafted archives
Summary: CVE-2026-109380 modern-tar: modern-tar: Denial of Service via memory exhausti...
Keywords:
Status: NEW
Alias: CVE-2026-109380
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:
Whiteboard:
Depends On: 2550348
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-12 21:03 UTC by OSIDB Bzimport
Modified: 2026-10-13 10:35 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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Description OSIDB Bzimport 2026-10-12 21:03:13 UTC 
modern-tar 0.3.5 through 0.8.5 contains a memory exhaustion vulnerability that allows attackers to produce negative entry sizes via non-octal bytes parsed by readOctal(). Attackers can supply a crafted, optionally gzip-compressed, archive to unpackTar() that buffers chunks indefinitely, exhausting process memory and suppressing later entries.
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