Medium · published September 4, 2025
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 and
msg[0].len is zero, former checks on msg[0].buf would be passed. If accessing
msg[0].buf[2] without sanity check, null pointer deref would happen. We add
check on msg[0].len to prevent crash. Similar issue occurs when access
msg[1].buf[0] and msg[1].buf[1].
Similar commit: commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 2.6.39, < 5.4.297 | 5.4.297 |
| linux/linux_kernel | ≥ 5.5, < 5.10.241 | 5.10.241 |
| linux/linux_kernel | ≥ 5.11, < 5.15.190 | 5.15.190 |
| linux/linux_kernel | ≥ 5.16, < 6.1.149 | 6.1.149 |
| linux/linux_kernel | ≥ 6.2, < 6.6.103 | 6.6.103 |
| linux/linux_kernel | ≥ 6.7, < 6.12.43 | 6.12.43 |
| linux/linux_kernel | ≥ 6.13, < 6.15.11 | 6.15.11 |
| linux/linux_kernel | ≥ 6.16, < 6.16.2 | 6.16.2 |
| debian/debian_linux | all versions | — |