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medium5.5

CVE-2023-53146

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 c…

Impact

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")

Affected products

VendorProductAffected versions
LinuxLinux Kernel
before 4.14.326
from 4.15 before 4.19.295
from 4.20 before 5.4.257
from 5.5 before 5.10.197
from 5.11 before 5.15.133
from 5.16 before 6.1.55

Weakness classification

CWE-476

References