UNKNOWN NVD
CVE-2026-68479
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btrtl: validate firmware patch bounds rtlbt_parse_firmware() copies patch_lengt
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: btrtl: validate firmware patch bounds
rtlbt_parse_firmware() copies patch_length - 4 bytes before appending the
firmware version. A malformed firmware patch shorter than the version field
can make this subtraction underflow and turn the copy into an oversized
read and write during Bluetooth setup.
The existing patch_offset + patch_length check can also wrap on 32-bit
architectures. Validate the patch length and range without arithmetic
overflow before allocating or copying the patch.
References
- https://git.kernel.org/stable/c/39e01b4addfbbe177567d6ed1dfb81f9cccb19e6
- https://git.kernel.org/stable/c/609c5b04a28dc1b0f3af6a7bc93055135b2d2059
- https://git.kernel.org/stable/c/6744ab60dfac55d1df5733960aad5be300984301
- https://git.kernel.org/stable/c/68c5a2a19987c035eb129e627e579adafb04f637
- https://git.kernel.org/stable/c/83534891c058ed71e251135072640911670869aa
This unknown severity vulnerability was published on 2026-08-15 via NVD.
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