CVE-2025-38694
media: dvb-frontends: dib7090p: fix null-ptr-deref in dib7090p_rw_on_apb()
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Description
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()")
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/09906650484a09b3a4d4b3d3065395856810becd
- https://git.kernel.org/stable/c/0bb32863426afe0badac25c28d59021f211d0f48
- https://git.kernel.org/stable/c/19eb5d8e6aa1169d368a4d69aae5572950deb89d
- https://git.kernel.org/stable/c/529fd5593b721e6f4370c591f5086649ed149ff6
- https://git.kernel.org/stable/c/a0f744d6cdde81d7382e183f77a4080a39b206cd
References (12)
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
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