CVE-2025-40294

Bluetooth: MGMT: Fix OOB access in parse_adv_monitor_pattern()

State: Published
Severity: Not scored
Published: Dec 8, 2025
Updated: Jun 16, 2026
Reserved: Apr 16, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: MGMT: Fix OOB access in parse_adv_monitor_pattern()

In the parse_adv_monitor_pattern() function, the value of the 'length' variable is currently limited to HCI_MAX_EXT_AD_LENGTH(251). The size of the 'value' array in the mgmt_adv_pattern structure is 31. If the value of 'pattern[i].length' is set in the user space and exceeds 31, the 'patterns[i].value' array can be accessed out of bound when copied.

Increasing the size of the 'value' array in the 'mgmt_adv_pattern' structure will break the userspace. Considering this, and to avoid OOB access revert the limits for 'offset' and 'length' back to the value of HCI_MAX_AD_LENGTH.

Found by InfoTeCS on behalf of Linux Verification Center (linuxtesting.org) with SVACE.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	99f30e12e588f9982a6eb1916e53510bff25b3b8 to before 96616530f524a0a76248cd44201de0a9e8526190Affected db08722fc7d46168fe31d9b8a7b29229dd959f9f to before 5f7350ff2b179764a4f40ba4161b60b8aaef857bAffected db08722fc7d46168fe31d9b8a7b29229dd959f9f to before 4b7d4aa5399b5a64caee639275615c63c008540dAffected db08722fc7d46168fe31d9b8a7b29229dd959f9f to before 3a50d59b3781bc3a4e96533612509546a4c309a7Affected db08722fc7d46168fe31d9b8a7b29229dd959f9f to before 8d59fba49362c65332395789fd82771f1028d87eAffected 6.1.83 to before 6.1.159Affected
LinuxLinux	6.6Affected before 6.6Not affected 6.1.159 through 6.1.Not affected 6.6.117 through 6.6.Not affected 6.12.58 through 6.12.Not affected 6.17.8 through 6.17.Not affected 6.18 and laterNot affected

Product

Versions

LinuxLinux

99f30e12e588f9982a6eb1916e53510bff25b3b8 to before 96616530f524a0a76248cd44201de0a9e8526190Affected
db08722fc7d46168fe31d9b8a7b29229dd959f9f to before 5f7350ff2b179764a4f40ba4161b60b8aaef857bAffected
db08722fc7d46168fe31d9b8a7b29229dd959f9f to before 4b7d4aa5399b5a64caee639275615c63c008540dAffected
db08722fc7d46168fe31d9b8a7b29229dd959f9f to before 3a50d59b3781bc3a4e96533612509546a4c309a7Affected
db08722fc7d46168fe31d9b8a7b29229dd959f9f to before 8d59fba49362c65332395789fd82771f1028d87eAffected
6.1.83 to before 6.1.159Affected

LinuxLinux

6.6Affected
before 6.6Not affected
6.1.159 through 6.1.*Not affected
6.6.117 through 6.6.*Not affected
6.12.58 through 6.12.*Not affected
6.17.8 through 6.17.*Not affected
6.18 and laterNot affected

References

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