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.
CVE-2025-40843（参考链接：https://github.com/advisories/GHSA-5xf2-f6ch-6p8r）的修复方式是：将未检查的 替换为带边界检查的 辅助函数。 在 行，传递给该辅助函数的目标缓冲区是 ，但传入的大小却是完整的 （4096 字节）。由于 底层使用的是 ，它会将目标缓冲区用 NUL 字符填充至指定的长度 ，因此该代码片段每次调用时都会尝试在剩余的 4094 字节空间内写入 4096 字节，从而引发一个与输入路径长度无关的 2 字节栈溢出。 该问题影响 CodeChe
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| 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
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Ericsson | CodeChecker | 0 ~ 6.28.2 | - |
|
II. Public POCs for CVE-2026-58106
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-58106 (1)
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V. Comments for CVE-2026-58106
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