Answer in brief
CVE-2026-68479 records a High severity (CVSS 7.8) vulnerability in Bluetooth: btrtl: validate firmware patch bounds. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=db33c77dddc2ed2cff3061d0b096a9f5ab0c3647 <39e01b4addfbbe177567d6ed1dfb81f9cccb19e6 || >=db33c77dddc2ed2cff3061d0b096a9f5ab0c3647 <bda3c598ade6ea03884074b91e31608326684921 || >=db33c77dddc2ed2cff3061d0b096a9f5ab0c3647 <a4cb830e0b55ac76c849fd7840afb251f4c028fa || >=db33c77dddc2ed2cff3061d0b096a9f5ab0c3647 <68c5a2a19987c035eb129e627e579adafb04f637 || >=db33c77dddc2ed2cff3061d0b096a9f5ab0c3647 <83534891c058ed71e251135072640911670869aa || >=db33c77dddc2ed2cff3061d0b096a9f5ab0c3647 <6744ab60dfac55d1df5733960aad5be300984301 || >=db33c77dddc2ed2cff3061d0b096a9f5ab0c3647 <f1ca750c0510bdbb504bf084d2f196ef2af92ea6 || >=db33c77dddc2ed2cff3061d0b096a9f5ab0c3647 <609c5b04a28dc1b0f3af6a7bc93055135b2d2059 | 39e01b4addfbbe177567d6ed1dfb81f9cccb19e6, bda3c598ade6ea03884074b91e31608326684921, a4cb830e0b55ac76c849fd7840afb251f4c028fa, 68c5a2a19987c035eb129e627e579adafb04f637, 83534891c058ed71e251135072640911670869aa, 6744ab60dfac55d1df5733960aad5be300984301, f1ca750c0510bdbb504bf084d2f196ef2af92ea6, 609c5b04a28dc1b0f3af6a7bc93055135b2d2059 |
| Linux/Linuxgeneric | 4.2 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.