CVEvulnerability
CVE-2026-68479
7.8 HIGH
Official page ↗
- Status
- Received
- Published
- 2026-08-15
- Last modified
- 2026-10-19
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-190
Description
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.
Related
Weakness · CWE (1)
- CWE-190 Integer Overflow or Wraparound weakness
References
- https://git.kernel.org/stable/c/39e01b4addfbbe177567d6ed1dfb81f9cccb19e6 git.kernel.org
- https://git.kernel.org/stable/c/609c5b04a28dc1b0f3af6a7bc93055135b2d2059 git.kernel.org
- https://git.kernel.org/stable/c/6744ab60dfac55d1df5733960aad5be300984301 git.kernel.org
- https://git.kernel.org/stable/c/68c5a2a19987c035eb129e627e579adafb04f637 git.kernel.org
- https://git.kernel.org/stable/c/83534891c058ed71e251135072640911670869aa git.kernel.org
- https://git.kernel.org/stable/c/a4cb830e0b55ac76c849fd7840afb251f4c028fa git.kernel.org
- https://git.kernel.org/stable/c/bda3c598ade6ea03884074b91e31608326684921 git.kernel.org
- https://git.kernel.org/stable/c/f1ca750c0510bdbb504bf084d2f196ef2af92ea6 git.kernel.org