{"id":"CVE-2025-40294","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: MGMT: Fix OOB access in parse_adv_monitor_pattern()\n\nIn the parse_adv_monitor_pattern() function, the value of\nthe 'length' variable is currently limited to …","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: MGMT: Fix OOB access in parse_adv_monitor_pattern()\n\nIn the parse_adv_monitor_pattern() function, the value of\nthe 'length' variable is currently limited to …","severity":"none","published":"2025-12-08","updated":"2026-10-14","sourceUpdated":"2026-10-14T22:10:00.210","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-40294","references":[{"url":"https://git.kernel.org/stable/c/3a50d59b3781bc3a4e96533612509546a4c309a7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/4b7d4aa5399b5a64caee639275615c63c008540d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5f7350ff2b179764a4f40ba4161b60b8aaef857b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8d59fba49362c65332395789fd82771f1028d87e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/96616530f524a0a76248cd44201de0a9e8526190","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.00201,"epssPercentile":0.09313,"ingestedAt":"2026-10-14T23:00:02.016Z","slug":"CVE-2025-40294","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: MGMT: Fix OOB access in parse_adv_monitor_pattern()\n\nIn the parse_adv_monitor_pattern() function, the value of\nthe 'length' variable is currently limited to HCI_MAX_EXT_AD_LENGTH(251).\nThe size of the 'value' array in the mgmt_adv_pattern structure is 31.\nIf the value of 'pattern[i].length' is set in the user space\nand exceeds 31, the 'patterns[i].value' array can be accessed\nout of bound when copied.\n\nIncreasing the size of the 'value' array in\nthe 'mgmt_adv_pattern' structure will break the userspace.\nConsidering this, and to avoid OOB access revert the limits for 'offset'\nand 'length' back to the value of HCI_MAX_AD_LENGTH.\n\nFound by InfoTeCS on behalf of Linux Verification Center\n(linuxtesting.org) with SVACE.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}