In the Linux kernel, the following vulnerability has been resolved:media: dvb-frontends: dib7090p: fix null-ptr-deref in dib7090p_rw_on_apb()In dib7090p_rw_on_apb, msg is controlled by user. When msg[0].buf is null andmsg[0].len is zero, former checks on msg[0].buf would be passed. If accessingmsg[0].buf[2] without sanity check, null pointer deref would happen. We addcheck on msg[0].len to prevent crash. Similar issue occurs when accessmsg[1].buf[0] and msg[1].buf[1].Similar commit: commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")
No PoCs from references.
- https://github.com/w4zu/Debian_security