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CVE-2026-111148— libsidplayfp through 3.1.1 Heap Out-of-Bounds Read via SidTuneBase::acceptSidTune

Quick assessment

Affected
libsidplayfp libsidplayfp
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

libsidplayfp 3.1.1 及之前版本中存在一个堆越界读取漏洞，攻击者可通过提供一个数据偏移量未经检查的 PSID/RSID 文件，导致应用程序崩溃。攻击者可将文件头中的偏移量设置为超出文件实际大小，从而导致长度计算发生回绕（wrap around），使 函数在堆缓冲区之后最多额外读取 64 KiB 的数据。

CVSS 5.5 · Medium EPSS 0.13% · P2

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 1

VendorProduct Version RangeStatus
libsidplayfp libsidplayfp ≤ 3.1.1 affected
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I. Basic Information for CVE-2026-111148

Vulnerability Information
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Vulnerability Title
libsidplayfp through 3.1.1 Heap Out-of-Bounds Read via SidTuneBase::acceptSidTune
Source: CVE Program / CVE List V5
Vulnerability Description
libsidplayfp through 3.1.1 contains a heap out-of-bounds read vulnerability that allows attackers to crash applications by supplying a PSID/RSID file with an unchecked data offset. Attackers can set the header data offset beyond the file size, wrapping the length calculation so resolveAddrs() reads up to 64 KiB past the heap buffer.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
libsidplayfp libsidplayfp 0 ~ 3.1.1 -

II. Public POCs for CVE-2026-111148

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III. Intelligence Information for CVE-2026-111148

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Patches & Fixes for CVE-2026-111148 (2)

Vendor Advisories for CVE-2026-111148 (1)

Proof of Concept for CVE-2026-111148 (1)

Other References for CVE-2026-111148 (1)

IV. Related Vulnerabilities

Same weakness: CWE-125

V. Comments for CVE-2026-111148

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