media: dvb-frontends: w7090p: fix null-ptr-deref in w7090p_tuner_write_serpar and w7090p_tuner_read_serpar

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-38693
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-09-04 16:15:37 UTC
Updated2026-05-12 13:16:55 UTC
DescriptionIn 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()")

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-476

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 713d54a8bd812229410a1902cd9b332a2a27af9f 7a41ecfc3415ebe3b4c44f96b3337691dcf431a3 git Not specified
CNA Linux Linux affected 713d54a8bd812229410a1902cd9b332a2a27af9f b3d77a3fc71c084575d3df4ec6544b3fb6ce587d git Not specified
CNA Linux Linux affected 713d54a8bd812229410a1902cd9b332a2a27af9f 17b30e5ded062bd74f8ca6f317e1d415a8680665 git Not specified
CNA Linux Linux affected 713d54a8bd812229410a1902cd9b332a2a27af9f 454a443eaa792c8865c861a282fe6d4f596abc3a git Not specified
CNA Linux Linux affected 713d54a8bd812229410a1902cd9b332a2a27af9f 6bbaec6a036940e22318f0454b50b8000845ab59 git Not specified
CNA Linux Linux affected 713d54a8bd812229410a1902cd9b332a2a27af9f f98132a59ccc59a8b97987363bc99c8968934756 git Not specified
CNA Linux Linux affected 713d54a8bd812229410a1902cd9b332a2a27af9f 99690a494d91a0dc86cebd628da4c62c40552bcb git Not specified
CNA Linux Linux affected 713d54a8bd812229410a1902cd9b332a2a27af9f 39b06b93f24dff923c4183d564ed28c039150554 git Not specified
CNA Linux Linux affected 713d54a8bd812229410a1902cd9b332a2a27af9f ed0234c8458b3149f15e496b48a1c9874dd24a1b git Not specified
CNA Linux Linux affected 2.6.39 Not specified
CNA Linux Linux unaffected 2.6.39 semver Not specified
CNA Linux Linux unaffected 5.4.297 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.241 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.190 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.149 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.103 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.43 6.12.* semver Not specified
CNA Linux Linux unaffected 6.15.11 6.15.* semver Not specified
CNA Linux Linux unaffected 6.16.2 6.16.* semver Not specified
CNA Linux Linux unaffected 6.17 * original_commit_for_fix Not specified
ADP Siemens SIMATIC CN 4100 affected V5.0 custom Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/17b30e5ded062bd74f8ca6f317e1d415a8680665 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/10/msg00008.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Third Party Advisory
git.kernel.org/stable/c/39b06b93f24dff923c4183d564ed28c039150554 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/454a443eaa792c8865c861a282fe6d4f596abc3a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/7a41ecfc3415ebe3b4c44f96b3337691dcf431a3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/ed0234c8458b3149f15e496b48a1c9874dd24a1b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/f98132a59ccc59a8b97987363bc99c8968934756 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-032379.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/b3d77a3fc71c084575d3df4ec6544b3fb6ce587d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/99690a494d91a0dc86cebd628da4c62c40552bcb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/6bbaec6a036940e22318f0454b50b8000845ab59 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/10/msg00007.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Third Party Advisory
git.kernel.org/stable/c/ddd1f0e0b6991e4f1b5d08a74de388564b7c4ac6 MITRE git.kernel.org
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