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()")
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 713d54a8bd812229410a1902cd9b332a2a27af9f, < 7a41ecfc3415ebe3b4c44f96b3337691dcf431a3; >= 713d54a8bd812229410a1902cd9b332a2a27af9f, < b3d77a3fc71c084575d3df4ec6544b3fb6ce587d; >= 713d54a8bd812229410a1902cd9b332a2a27af9f, < 17b30e5ded062bd74f8ca6f317e1d415a8680665; >= 713d54a8bd812229410a1902cd9b332a2a27af9f, < 454a443eaa792c8865c861a282fe6d4f596abc3a; >= 713d54a8bd812229410a1902cd9b332a2a27af9f, < 6bbaec6a036940e22318f0454b50b8000845ab59; >= 713d54a8bd812229410a1902cd9b332a2a27af9f, < f98132a59ccc59a8b97987363bc99c8968934756; >= 713d54a8bd812229410a1902cd9b332a2a27af9f, < 99690a494d91a0dc86cebd628da4c62c40552bcb; >= 713d54a8bd812229410a1902cd9b332a2a27af9f, < 39b06b93f24dff923c4183d564ed28c039150554; >= 713d54a8bd812229410a1902cd9b332a2a27af9f, < ed0234c8458b3149f15e496b48a1c9874dd24a1b |
| Linux | Linux | 2.6.39 |
| Siemens | SIMATIC CN 4100 | < V5.0 |
References
- https://git.kernel.org/stable/c/17b30e5ded062bd74f8ca6f317e1d415a8680665Patch
- https://git.kernel.org/stable/c/39b06b93f24dff923c4183d564ed28c039150554Patch
- https://git.kernel.org/stable/c/454a443eaa792c8865c861a282fe6d4f596abc3aPatch
- https://git.kernel.org/stable/c/6bbaec6a036940e22318f0454b50b8000845ab59Patch
- https://git.kernel.org/stable/c/7a41ecfc3415ebe3b4c44f96b3337691dcf431a3Patch
- https://git.kernel.org/stable/c/99690a494d91a0dc86cebd628da4c62c40552bcbPatch
- https://git.kernel.org/stable/c/b3d77a3fc71c084575d3df4ec6544b3fb6ce587d
- https://git.kernel.org/stable/c/ed0234c8458b3149f15e496b48a1c9874dd24a1bPatch
- https://git.kernel.org/stable/c/f98132a59ccc59a8b97987363bc99c8968934756Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
Timeline
- Published
- Sep 4, 2025
- Last modified
- Nov 5, 2026
- NVD status
- Modified