CVE-2026-98208

Description

In the Linux kernel, the following vulnerability has been resolved: mmc: sdio_uart: fix xmit_fifo leak when the port table is full sdio_uart_add_port() allocates the transmit fifo before claiming a slot in sdio_uart_table[]. When all UART_NR slots are taken, it returns -EBUSY with the fifo still allocated, but the probe error path only kfree()s the port, leaking the transmit fifo. Free the fifo in the failure path of sdio_uart_add_port() itself so the function retains nothing on error.

References

• https://git.kernel.org/stable/c/53823e25793a97d07e6e98e0904bbf74cac8bc76
• https://git.kernel.org/stable/c/5e142adbbdc54afbd01fad476c91cded41d22594
• https://git.kernel.org/stable/c/72f4c2b7a48423c708f2c348585419a1b71ab04c
• https://git.kernel.org/stable/c/8a2c1bf209ba04cbd14153a771724bd5aa522fcd
• https://git.kernel.org/stable/c/9e992d59138fcfaa4bad7cc0750265b0a8bca100