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medium5.5

CVE-2023-52915

In the Linux kernel, the following vulnerability has been resolved: media: dvb-usb-v2: af9035: Fix null-ptr-deref in af9035_i2c_master_xfer In af9035_i2c_maste…

Impact

In the Linux kernel, the following vulnerability has been resolved: media: dvb-usb-v2: af9035: Fix null-ptr-deref in af9035_i2c_master_xfer In af9035_i2c_master_xfer, 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 af9035_i2c_master_xfer. 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 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")

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