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CVE-2026-68479 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: kernel.orgCVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://git.kernel.org/stable/c/39e01b4addfbbe177567d6ed1dfb81f9cccb19e6 kernel.org
https://git.kernel.org/stable/c/609c5b04a28dc1b0f3af6a7bc93055135b2d2059 kernel.org
https://git.kernel.org/stable/c/6744ab60dfac55d1df5733960aad5be300984301 kernel.org
https://git.kernel.org/stable/c/68c5a2a19987c035eb129e627e579adafb04f637 kernel.org
https://git.kernel.org/stable/c/83534891c058ed71e251135072640911670869aa kernel.org

see all 8 references

Weakness Enumeration

No weakness enumeration is available for this CVE.

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-68479
NVD Published Date:
Aug 15, 2026
NVD Last Modified:
Aug 17, 2026
Source:
kernel.org
CVE-2026-68479 Details - Not Deferred