Bug 2509949 (CVE-2026-67550) - CVE-2026-67550 re2: Denial of Service via out-of-bounds read
Summary: CVE-2026-67550 re2: Denial of Service via out-of-bounds read
Keywords:
Status: NEW
Alias: CVE-2026-67550
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: 2026-08-01 00:01 UTC by OSIDB Bzimport
Modified: 2026-08-05 18:42 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-08-01 00:01:27 UTC
re2 provides Node.js bindings for Google's RE2 regular expression engine. Prior to 1.25.2, re2 validates lastIndex against the UTF-8 byte length of a subject but uses it as a UTF-16 code-unit offset in exec, test, match, replace, and split, allowing an attacker-influenced lastIndex on a non-ASCII subject to trigger an out-of-bounds heap read and an uncatchable process crash, with limited heap information disclosure in some cases. This issue is fixed in 1.25.2.


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