CVE-2025-68352

Description

In the Linux kernel, the following vulnerability has been resolved:spi: ch341: fix out-of-bounds memory access in ch341_transfer_oneDiscovered by Atuin - Automated Vulnerability Discovery Engine.The len variable is calculated as min(32, trans->len + 1),which includes the 1-byte command header.When copying data from trans->tx_buf to ch341->tx_buf + 1, using lenas the length is incorrect because:1. It causes an out-of-bounds read from trans->tx_buf (which has size trans->len, i.e., len - 1 in this context).2. It can cause an out-of-bounds write to ch341->tx_buf if len is CH341_PACKET_LENGTH (32). Writing 32 bytes to ch341->tx_buf + 1 overflows the buffer.Fix this by copying len - 1 bytes.

Risk Information

Associated Vulnerability

Patch Details

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234