Bug 2441279 (CVE-2026-2739) - CVE-2026-2739 bn.js: bn.js: Denial of Service via calling maskn(0)
Summary: CVE-2026-2739 bn.js: bn.js: Denial of Service via calling maskn(0)
Keywords:
Status: NEW
Alias: CVE-2026-2739
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-02-20 06:01 UTC by OSIDB Bzimport
Modified: 2026-02-20 10:50 UTC (History)
41 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-02-20 06:01:33 UTC 
This affects versions of the package bn.js before 5.2.3. Calling maskn(0) on any BN instance corrupts the internal state, causing toString(), divmod(), and other methods to enter an infinite loop, hanging the process indefinitely.
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