CVE-2024-43839 Information

Description

In the Linux kernel the following vulnerability has been resolved:

bna: adjust ’name’ buf size of bna_tcb and bna_ccb structures

To have enough space to write all possible sprintf() args. Currently ’name’ size is 16 but the first ‘%s’ specifier may already need at least 16 characters since ‘bnad->netdev->name’ is used there.

For ‘%d’ specifiers assume that they require: 1 char for ’tx_id + tx_info->tcb[i]->id’ sum BNAD_MAX_TXQ_PER_TX is 8 2 chars for ‘rx_id + rx_info->rx_ctrl[i].ccb->id’ BNAD_MAX_RXP_PER_RX is 16

And replace sprintf with snprintf.

Detected using the static analysis tool - Svace.

Reference

https://git.kernel.org/stable/c/ab748dd10d8742561f2980fea08ffb4f0cacfdef https://git.kernel.org/stable/c/b0ff0cd0847b03c0a0abe20cfa900eabcfcb9e43 https://git.kernel.org/stable/c/e0f48f51d55fb187400e9787192eda09fa200ff5 https://git.kernel.org/stable/c/c9741a03dc8e491e57b95fba0058ab46b7e506da