CVE-2025-38693
Description
In the Linux kernel, the following vulnerability has been resolved: media: dvb-frontends: w7090p: fix null-ptr-deref in w7090p_tuner_write_serpar and w7090p_tuner_read_serpar In w7090p_tuner_write_serpar, 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 commit: commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 6.1.153-1 |
| debian | bullseye | fixed | 5.10.244-1 |
| debian | forky | fixed | 6.16.3-1 |
| debian | sid | fixed | 6.16.3-1 |
| debian | trixie | fixed | 6.12.43-1 |
| linux-kernel | affected | 5.4.297 | |
| debian | 11.0 | affected | |
References
- https://git.kernel.org/stable/c/17b30e5ded062bd74f8ca6f317e1d415a8680665
- https://git.kernel.org/stable/c/39b06b93f24dff923c4183d564ed28c039150554
- https://git.kernel.org/stable/c/454a443eaa792c8865c861a282fe6d4f596abc3a
- https://git.kernel.org/stable/c/6bbaec6a036940e22318f0454b50b8000845ab59
- https://git.kernel.org/stable/c/7a41ecfc3415ebe3b4c44f96b3337691dcf431a3
- https://git.kernel.org/stable/c/99690a494d91a0dc86cebd628da4c62c40552bcb
- https://git.kernel.org/stable/c/b3d77a3fc71c084575d3df4ec6544b3fb6ce587d
- https://git.kernel.org/stable/c/ed0234c8458b3149f15e496b48a1c9874dd24a1b
- https://git.kernel.org/stable/c/f98132a59ccc59a8b97987363bc99c8968934756
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
- https://www.suse.com/security/cve/CVE-2025-38693.html
- https://security-tracker.debian.org/tracker/CVE-2025-38693
CWEs
CWE-476
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.