Extractor crash and heap disclosure via length underflow
Published Jun 16, 2026 · Updated Jun 16, 2026
Out-of-bounds read in the MP3 extractor in Red Hat Enterprise Linux 8, 9, and 10 allows local users to crash it or read heap data via a crafted file. In extract_performers_tags, an unchecked pos-plus-offset value exceeds csize, underflows the remaining-length calculation, and causes g_convert to scan past the heap buffer for a null byte. Processing an attacker-supplied MP3 with ID3v2.4 performer tags is required; the read causes a SIGSEGV on unmapped memory or exposes visible heap data, with no integrity impact reported.
Summary
What happened
Out-of-bounds read in the MP3 extractor in Red Hat Enterprise Linux 8, 9, and 10 allows local users to crash it or read heap data via a crafted file. In extract_performers_tags, an unchecked pos-plus-offset value exceeds csize, underflows the remaining-length calculation, and causes g_convert to scan past the heap buffer for a null byte. Processing an attacker-supplied MP3 with ID3v2.4 performer tags is required; the read causes a SIGSEGV on unmapped memory or exposes visible heap data, with no integrity impact reported.
The record
- CVE
- CVE-2026-1764
- Published
- Jun 16, 2026
- Updated
- Jun 16, 2026
- Vendor
- 389 Directory Server
- Product
- Red Hat Enterprise Linux 10
- Classifications
- CWE-125, T1204.002
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 16, 2026CVE publishedPublication date reported by the CVE source.
- Jun 16, 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
- Crafted ID3v2.4 MP3 crash reproducerproof of concept · demonstrated
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