Linux Kernel up to 7.2-rc3 btrtl rtlbt_parse_firmware memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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9.5$5k-$25k0.48

Summaryinfo

A vulnerability was found in Linux Kernel up to 7.2-rc3. It has been classified as very critical. This affects the function rtlbt_parse_firmware of the component btrtl. This manipulation causes memory corruption. The identification of this vulnerability is CVE-2026-68479. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.2-rc3. It has been declared as very critical. Affected by this vulnerability is the function rtlbt_parse_firmware of the component btrtl. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2026-68479 since 07/30/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/15/2026).

Upgrading to version 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5 or 7.2-rc4 eliminates this vulnerability. Applying the patch 39e01b4addfbbe177567d6ed1dfb81f9cccb19e6/bda3c598ade6ea03884074b91e31608326684921/a4cb830e0b55ac76c849fd7840afb251f4c028fa/68c5a2a19987c035eb129e627e579adafb04f637/83534891c058ed71e251135072640911670869aa/6744ab60dfac55d1df5733960aad5be300984301/f1ca750c0510bdbb504bf084d2f196ef2af92ea6/609c5b04a28dc1b0f3af6a7bc93055135b2d2059 is able to eliminate this problem.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.261/5.15.212/6.1.178/6.6.145/6.12.97/6.18.40/7.1.5/7.2-rc4
Patch: 39e01b4addfbbe177567d6ed1dfb81f9cccb19e6/bda3c598ade6ea03884074b91e31608326684921/a4cb830e0b55ac76c849fd7840afb251f4c028fa/68c5a2a19987c035eb129e627e579adafb04f637/83534891c058ed71e251135072640911670869aa/6744ab60dfac55d1df5733960aad5be300984301/f1ca750c0510bdbb504bf084d2f196ef2af92ea6/609c5b04a28dc1b0f3af6a7bc93055135b2d2059

Timelineinfo

07/30/2026 CVE reserved
08/15/2026 +16 days Advisory disclosed
08/15/2026 +0 days VulDB entry created
08/15/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-68479 (🔒)
GCVE (CVE): GCVE-0-2026-68479
GCVE (VulDB): GCVE-100-390409

Entryinfo

Created: 08/15/2026 11:01
Changes: 08/15/2026 11:01 (59)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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