Crash and heap disclosure via cursor-size overflow
Published Jun 15, 2026 · Updated Jun 15, 2026
Signed integer overflow in GStreamer's VMnc decoder on Red Hat Enterprise Linux allows remote attackers to crash applications via crafted streams. The cursor payload calculation multiplies rectangle dimensions, pixel size, and a color-cursor factor as signed 32-bit values; a negative result bypasses the short-packet check while rendering retains the original dimensions. Exploitation requires a user to open or process a malicious VMnc file, and the bounded effects are an application crash and heap-data disclosure.
Summary
What happened
Signed integer overflow in GStreamer's VMnc decoder on Red Hat Enterprise Linux allows remote attackers to crash applications via crafted streams. The cursor payload calculation multiplies rectangle dimensions, pixel size, and a color-cursor factor as signed 32-bit values; a negative result bypasses the short-packet check while rendering retains the original dimensions. Exploitation requires a user to open or process a malicious VMnc file, and the bounded effects are an application crash and heap-data disclosure.
The record
- CVE
- CVE-2026-52722
- Published
- Jun 15, 2026
- Updated
- Jun 15, 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
- Jun 15, 2026CVE publishedPublication date reported by the CVE source.
- Jun 15, 2026Record updatedLatest update available in the CVE record.
Exploitability
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What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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