Linux Kernel up to 7.2.0 hci_event hci_cc_le_set_cig_params out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.5$0-$5k1.23-

Summaryinfo

A vulnerability, which was classified as very critical, was found in Linux Kernel up to 7.2.0. This affects the function hci_cc_le_set_cig_params of the component hci_event. Executing a manipulation can lead to out-of-bounds. This vulnerability is registered as CVE-2026-80763. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as very critical was found in Linux Kernel up to 7.2.0. This vulnerability affects the function hci_cc_le_set_cig_params of the component hci_event. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: validate LE Set CIG Parameters response The Command Complete dispatch validates only the fixed part of the LE Set CIG Parameters response. After that part is pulled from the skb, hci_cc_le_set_cig_params() trusts num_handles and reads each entry in the trailing handle array. Matching num_handles against the command's num_cis does not guarantee that the response contains the advertised handles. A truncated response from a malfunctioning controller can therefore make the handler read beyond the skb data. Validate that the remaining skb data contains all advertised handles. Include this in the existing response validation so malformed responses also follow the established CIG failure handling.

The advisory is available at git.kernel.org. This vulnerability was named CVE-2026-80763 since 08/26/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/04/2026).

Upgrading to version 6.1.187, 6.6.154, 6.12.106, 6.18.47, 7.1.11, 7.2.1 or 7.3-rc1 eliminates this vulnerability. Applying the patch 9e05783d0bb96a7b853cc058a7c7de2dc4a62154/26741d178f31932c9018b36b7953e6dc391436a4/a34df5c4a439cfc04565fa5be608ed1e53134f1f/e3f82e8f2a5915f533b57a065e9a045aa2ee03bc/d83ecb7b96105d932dabaa56ccd7418c25fb7cbb/6fc540e835dddb518cef3ff522b780f701cd03df/0acd4eeb4b225b9bebbf9ef96cc10cdd79b94899 is able to eliminate this problem.

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Productinfo

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Version

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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: Out-of-bounds
CWE: CWE-125 / 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 6.1.187/6.6.154/6.12.106/6.18.47/7.1.11/7.2.1/7.3-rc1
Patch: 9e05783d0bb96a7b853cc058a7c7de2dc4a62154/26741d178f31932c9018b36b7953e6dc391436a4/a34df5c4a439cfc04565fa5be608ed1e53134f1f/e3f82e8f2a5915f533b57a065e9a045aa2ee03bc/d83ecb7b96105d932dabaa56ccd7418c25fb7cbb/6fc540e835dddb518cef3ff522b780f701cd03df/0acd4eeb4b225b9bebbf9ef96cc10cdd79b94899

Timelineinfo

08/26/2026 CVE reserved
09/04/2026 +9 days Advisory disclosed
09/04/2026 +0 days VulDB entry created
09/04/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-80763 (🔒)
GCVE (CVE): GCVE-0-2026-80763
GCVE (VulDB): GCVE-100-398890

Entryinfo

Created: 09/04/2026 17:59
Changes: 09/04/2026 17:59 (59)
Complete: 🔍
Cache ID: 216::103

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