CVE-2023-53146 Information

Description

In the Linux kernel the following vulnerability has been resolved:

media: dw2102: Fix null-ptr-deref in dw2102_i2c_transfer()

In dw2102_i2c_transfer msg is controlled by user. When msg[i].buf is null and msg[i].len is zero former checks on msg[i].buf would be passed. Malicious data finally reach dw2102_i2c_transfer. If accessing msg[i].buf[0] without sanity check null ptr deref would happen. We add check on msg[i].len to prevent crash.

Similar commit: commit 950e252cb469 ([media] dw2102: limit messages to buffer size)

Reference

https://git.kernel.org/stable/c/08dfcbd03b2b7f918c4f87c6ff637054e510df74 https://git.kernel.org/stable/c/5ae544d94abc8ff77b1b9bf8774def3fa5689b5b https://git.kernel.org/stable/c/77cbd42d29de9ffc93d5529bab8813cde53af14c https://git.kernel.org/stable/c/903566208ae6bb9c0e7e54355ce75bf6cf72485d https://git.kernel.org/stable/c/97fdbdb750342cbc204befde976872fedb406ee6 https://git.kernel.org/stable/c/beb9550494e7349f92b9eaa283256a5ad9b1c9be https://git.kernel.org/stable/c/ecbe6d011b95c7da59f014f8d26cb7245ed1e11e https://git.kernel.org/stable/c/fb28afab113a82b89ffec48c8155ec05b4f8cb5e