Bug 2538733 (CVE-2026-88340) - CVE-2026-88340 yara: YARA: Memory corruption and denial of service via specially crafted rule files
Summary: CVE-2026-88340 yara: YARA: Memory corruption and denial of service via specia...
Keywords:
Status: NEW
Alias: CVE-2026-88340
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: 2539100
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-22 20:19 UTC by OSIDB Bzimport
Modified: 2026-09-23 07:25 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-09-22 20:19:45 UTC 
An invalid pointer release vulnerability exists in YARA 4.5.8 during deserialization of compiled .yrc rule files. The vulnerability is caused by insufficient validation of external-variable pointers, which may lead to invalid free in yr_rules_destroy() or wild pointer access in yr_object_create(). An attacker can provide a specially crafted .yrc file that causes memory corruption and application crash.
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