CVE-2026-53195

Description

In the Linux kernel, the following vulnerability has been resolved: USB: serial: io_ti: fix heap overflow in build_i2c_fw_hdr() build_i2c_fw_hdr() allocates a fixed-size buffer of (16*1024 - 512) + sizeof(struct ti_i2c_firmware_rec) bytes, then copies le16_to_cpu(img_header->Length) bytes into it without validating that Length fits within the available space after the firmware record header. img_header->Length is a __le16 from the firmware file and can be up to 65535. check_fw_sanity() validates the total firmware size but not img_header->Length specifically. Fix by rejecting images where img_header->Length exceeds the available destination space.

References

• https://git.kernel.org/stable/c/0fd2b00b2d3d05e3eaa13342b3dfb0fa85c226ae
• https://git.kernel.org/stable/c/130d6567eb148040eed1b73e1414ad6c27d22bd5
• https://git.kernel.org/stable/c/294692d3296eee3391c348d7ea6401916d27806c
• https://git.kernel.org/stable/c/2fd64bf0ad66ab5de0c73524591d879427ba5aba
• https://git.kernel.org/stable/c/3e187152f44d76d7633a3855ffd0099e1588b82a