CVE-2026-105839: Integer Overflow or Wraparound in sezero libmikmod
Description
libmikmod before 3.3.14 contains an integer overflow in the Oktalyzer loader OKT_doPBOD() that allows attackers to cause heap buffer overflow via crafted track counts. Attackers can supply an OKT module whose SLEN chunk wraps the 16-bit numtrk value, causing PBOD writes past allocated track pointers for crashes or code execution.
CVSS v4.0
Score 8.5high
Affected software
sezero
libmikmod
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in libmikmod (prior to 3.3.14) involves an integer overflow in the Oktalyzer loader's OKT_doPBOD() function. Attackers can craft an OKT module with an SLEN chunk that causes the 16-bit numtrk value to wrap around, leading to writes beyond allocated track pointers on the heap. This heap buffer overflow can cause application crashes or potentially allow code execution.
Potential Impact
Successful exploitation can cause heap buffer overflow leading to application crashes or potentially arbitrary code execution. The vulnerability requires user interaction (UI:P) and local attack vector (AV:L), with low attack complexity (AC:L) and no privileges required (PR:N). The impact on confidentiality, integrity, and availability is high.
Mitigation Recommendations
A fix is available in libmikmod version 3.3.14. Users and administrators should upgrade to version 3.3.14 or later to remediate this vulnerability. No other mitigation steps are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-10-05T22:00:10.842Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ac4fc542cdf04f656b4d68d
Added to database: 10/06/2026, 13:49:08 UTC
Last enriched: 10/06/2026, 14:04:18 UTC
Last updated: 10/06/2026, 18:57:28 UTC
Views: 15
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