CVE-2026-45921

In the Linux kernel, the following vulnerability has been resolved:

mtd: parsers: Fix memory leak in mtd_parser_tplink_safeloader_parse()

The function mtd_parser_tplink_safeloader_parse() allocates buf via mtd_parser_tplink_safeloader_read_table(). If the allocation for parts[idx].name fails inside the loop, the code jumps to the err_free label without freeing buf, leading to a memory leak.

Fix this by freeing the temporary buffer buf in the err_free label.

Compile tested only. Issue found using a prototype static analysis tool and code review.

Weakness

The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

Affected Software

Potential Mitigations

• Choose a language or tool that provides automatic memory management, or makes manual memory management less error-prone.
• For example, glibc in Linux provides protection against free of invalid pointers.
• When using Xcode to target OS X or iOS, enable automatic reference counting (ARC) [REF-391].
• To help correctly and consistently manage memory when programming in C++, consider using a smart pointer class such as std::auto_ptr (defined by ISO/IEC ISO/IEC 14882:2003), std::shared_ptr and std::unique_ptr (specified by an upcoming revision of the C++ standard, informally referred to as C++ 1x), or equivalent solutions such as Boost.

References

• https://git.kernel.org/stable/c/0f5e62ea5c43146eacdc6861cb1022ffae1b79bc
• https://git.kernel.org/stable/c/971e9c53aed82f17a9c6a65daa4e21cc15eba5b1
• https://git.kernel.org/stable/c/980ce2b02dd06a4fdf5fee38b2e14becf9cf7b8b
• https://git.kernel.org/stable/c/e97f5fac8ce9a6b9ec724c97d86b0985e915fdca
• https://git.kernel.org/stable/c/ec121ad626c319085f6d40a52cd04e99b4554926