{"id":"CVE-2024-42132","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nbluetooth/hci: disallow setting handle bigger than HCI_CONN_HANDLE_MAX\n\nSyzbot hit warning in hci_conn_del() caused by freeing handle that was\nnot allocated using ida a…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nbluetooth/hci: disallow setting handle bigger than HCI_CONN_HANDLE_MAX\n\nSyzbot hit warning in hci_conn_del() caused by freeing handle that was\nnot allocated using ida a…","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","cwe":["CWE-763"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 6.5.12, < 6.6","linux_kernel >= 6.6.2, < 6.6.39","linux_kernel >= 6.7, < 6.9.9","linux_kernel = 6.10"],"patched":["linux_kernel 6.9.9"],"published":"2024-07-30","updated":"2026-07-24","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2024-42132","references":[{"url":"https://git.kernel.org/stable/c/1cc18c2ab2e8c54c355ea7c0423a636e415a0c23","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2ae8d7742a09c275872e670c53337b3dcedaa11c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/4970e48f83dbd21d2a6a7cdaaafc2a71f7f45dc4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d311036696fed778301d08a71a4bef737b86d8c5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1cc18c2ab2e8c54c355ea7c0423a636e415a0c23","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/4970e48f83dbd21d2a6a7cdaaafc2a71f7f45dc4","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/d311036696fed778301d08a71a4bef737b86d8c5","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.0029,"epssPercentile":0.19316,"ingestedAt":"2026-07-24T15:30:57.633Z","slug":"CVE-2024-42132","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbluetooth/hci: disallow setting handle bigger than HCI_CONN_HANDLE_MAX\n\nSyzbot hit warning in hci_conn_del() caused by freeing handle that was\nnot allocated using ida allocator.\n\nThis is caused by handle bigger than HCI_CONN_HANDLE_MAX passed by\nhci_le_big_sync_established_evt(), which makes code think it's unset\nconnection.\n\nAdd same check for handle upper bound as in hci_conn_set_handle() to\nprevent warning.\n\n## Affected\n\n- `linux_kernel >= 6.5.12, < 6.6`\n- `linux_kernel >= 6.6.2, < 6.6.39`\n- `linux_kernel >= 6.7, < 6.9.9`\n- `linux_kernel = 6.10`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.9.9`","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}