PT-2026-61249 · Linux · Linux

CVE-2026-63932 · Publicado 2026-07-19 · Atualizado 2026-07-19

NVD

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

iio: chemical: mhz19b: reject oversized serial replies

mhz19b receive buf() appends each serdev chunk into the fixed MHZ19B CMD SIZE receive buffer and advances buf idx by len without checking that the chunk fits in the remaining space. A large callback can therefore overflow st->buf before the command path validates the reply.

Reset the reply state before each command and reject oversized serial replies before copying them into the fixed buffer. When an oversized reply is detected, wake the waiter and report -EMSGSIZE instead of overwriting st->buf.

Identificadores relacionados

CVE-2026-63932

Produtos afetados

Linux

Referências · 4

• https://git.kernel.org/stable/c/673478bc29cf72010faaf293c1c8c667393335a0 · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-63932 · Nota de Segurança
• https://git.kernel.org/stable/c/ea69e7a6efa88ef32090a91064c362738cc19ddd · Nota
• https://git.kernel.org/stable/c/a5a05410cb34bfa486d63684cdc1f87a3b13f20a · Nota