Crash and heap disclosure via wrapped header sizes
Published Aug 10, 2026 · Updated Aug 10, 2026
Integer wraparound in GStreamer asfdemux on Red Hat Enterprise Linux 7, 8, 9, and 10 allows remote attackers to crash media applications. asfdemux adds attacker-controlled header lengths with 32-bit unsigned arithmetic and subtracts constants from undersized fields, letting wrapped values bypass available-data bounds checks and drive out-of-bounds heap reads. Opening or previewing a crafted ASF, WMV, or WMA file through auto-plugged playbin or decodebin is sufficient; the read can crash the process or place limited heap data in metadata tags.
Summary
What happened
Integer wraparound in GStreamer asfdemux on Red Hat Enterprise Linux 7, 8, 9, and 10 allows remote attackers to crash media applications. asfdemux adds attacker-controlled header lengths with 32-bit unsigned arithmetic and subtracts constants from undersized fields, letting wrapped values bypass available-data bounds checks and drive out-of-bounds heap reads. Opening or previewing a crafted ASF, WMV, or WMA file through auto-plugged playbin or decodebin is sufficient; the read can crash the process or place limited heap data in metadata tags.
The record
- CVE
- CVE-2026-19389
- Published
- Aug 10, 2026
- Updated
- Aug 10, 2026
- Vendor
- 389 Directory Server
- Product
- Red Hat Enterprise Linux 10
- Classifications
- CWE-190, T1204.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 10, 2026CVE publishedPublication date reported by the CVE source.
- Aug 10, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo