CVE-2025-38694
media: dvb-frontends: dib7090p: fix null-ptr-deref in dib7090p_rw_on_apb()
Reported by linux · 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()")
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| linux_kernel | linux | 6.16.2, 6.15.11, 6.12.43, 6.6.103, 6.1.149, 5.15.190, 5.10.241, 5.4.297 |
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | 713d54a8bd812229410a1902cd9b332a2a27af9f, 713d54a8bd812229410a1902cd9b332a2a27af9f, 713d54a8bd812229410a1902cd9b332a2a27af9f |
| Linux | Linux | 2.6.39, 0, 5.4.297 |
| linux | linux_kernel | 2.6.39, 2.6.39, 2.6.39 |
| Linux | Linux Kernel | |
| Siemens | SIMATIC CN 4100 | 0 |
| Linux | Linux | 6.15.11, 6.16.2, 6.17 |
Timeline
- Sep 4, 2025 CVE Published
- Sep 5, 2025 EPSS Score (30 in total, the first dated here)
- Oct 12, 2025 PoC Published (10 in total, the first dated here)
- Feb 2, 2026 Security Advisory (185 in total, the first dated here)
- Mar 29, 2026 Distribution Patch (172 in total, the first dated here)
- Jun 9, 2026 Coalition ESS Score
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