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CVE-2026-58106— Incomplete fix for CVE-2025-40843: safe_strcpy is called with PATH_MAX into fullPath+2, writing 2 bytes past the buffer on every CodeChecker log invocation

Quick assessment

Affected
Ericsson CodeChecker
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.

Ericsson CodeChecker是瑞典Ericsson公司开源的一款代码静态分析工具。 Ericsson codechecker 6.28.2及之前版本存在缓冲区错误漏洞，该漏洞源于在ldlogger-tool-gcc.c中调用safe_strcpy()时，目标缓冲区指针为fullPath+2但传入完整PATH_MAX大小，导致每次调用都会发生2字节栈溢出。

CVSS 2.0 · Low EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Ericsson CodeChecker ≤ 6.28.2 affected
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I. Basic Information for CVE-2026-58106

Vulnerability Information
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Vulnerability Title
Incomplete fix for CVE-2025-40843: safe_strcpy is called with PATH_MAX into fullPath+2, writing 2 bytes past the buffer on every CodeChecker log invocation
Source: CVE Program / CVE List V5
Vulnerability Description
CVE-2025-40843 https://github.com/advisories/GHSA-5xf2-f6ch-6p8r  was fixed by replacing unchecked strcpy() with a bounded safe_strcpy() helper. At ldlogger-tool-gcc.c:129 the destination passed to that helper is fullPath + 2, but the size passed down is the full PATH_MAX. safe_strcpy() is strncpy(), which NUL-pads the destination out to the whole n, so this site writes 4096 bytes into the 4094 that remain — a 2-byte stack overflow on every invocation, independent of the input path's length. This issue affects CodeChecker: through 6.28.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N/E:P/S:N/AU:Y/R:U/RE:L/U:Green
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
Ericsson codechecker 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ericsson CodeChecker是瑞典Ericsson公司开源的一款代码静态分析工具。 Ericsson codechecker 6.28.2及之前版本存在缓冲区错误漏洞，该漏洞源于在ldlogger-tool-gcc.c中调用safe_strcpy()时，目标缓冲区指针为fullPath+2但传入完整PATH_MAX大小，导致每次调用都会发生2字节栈溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Ericsson CodeChecker 0 ~ 6.28.2 -

II. Public POCs for CVE-2026-58106

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III. Intelligence Information for CVE-2026-58106

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Vendor Advisories for CVE-2026-58106 (1)

IV. Related Vulnerabilities

Same product: CodeChecker
Same vendor: Ericsson
Same weakness: CWE-787

V. Comments for CVE-2026-58106

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