{"id":"CVE-2023-52518","summary":"Bluetooth: hci_codec: Fix leaking content of local_codecs","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_codec: Fix leaking content of local_codecs\n\nThe following memory leak can be observed when the controller supports\ncodecs which are stored in local_codecs list but the elements are never\nfreed:\n\nunreferenced object 0xffff88800221d840 (size 32):\n  comm \"kworker/u3:0\", pid 36, jiffies 4294898739 (age 127.060s)\n  hex dump (first 32 bytes):\n    f8 d3 02 03 80 88 ff ff 80 d8 21 02 80 88 ff ff  ..........!.....\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace:\n    [\u003cffffffffb324f557\u003e] __kmalloc+0x47/0x120\n    [\u003cffffffffb39ef37d\u003e] hci_codec_list_add.isra.0+0x2d/0x160\n    [\u003cffffffffb39ef643\u003e] hci_read_codec_capabilities+0x183/0x270\n    [\u003cffffffffb39ef9ab\u003e] hci_read_supported_codecs+0x1bb/0x2d0\n    [\u003cffffffffb39f162e\u003e] hci_read_local_codecs_sync+0x3e/0x60\n    [\u003cffffffffb39ff1b3\u003e] hci_dev_open_sync+0x943/0x11e0\n    [\u003cffffffffb396d55d\u003e] hci_power_on+0x10d/0x3f0\n    [\u003cffffffffb30c99b4\u003e] process_one_work+0x404/0x800\n    [\u003cffffffffb30ca134\u003e] worker_thread+0x374/0x670\n    [\u003cffffffffb30d9108\u003e] kthread+0x188/0x1c0\n    [\u003cffffffffb304db6b\u003e] ret_from_fork+0x2b/0x50\n    [\u003cffffffffb300206a\u003e] ret_from_fork_asm+0x1a/0x30","modified":"2026-04-02T09:42:58.035916Z","published":"2024-03-02T21:54:47.826Z","related":["SUSE-SU-2024:1466-1","SUSE-SU-2024:1480-1","SUSE-SU-2024:1490-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52518.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/626535077ba9dc110787540d1fe24881094c15a1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b938790e70540bf4f2e653dcd74b232494d06c8f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/eea5a8f0c3b7c884d2351e75fbdd0a3d7def5ae1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52518.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-52518"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"8961987f3f5fa2f2618e72304d013c8dd5e604a6"},{"fixed":"626535077ba9dc110787540d1fe24881094c15a1"},{"fixed":"eea5a8f0c3b7c884d2351e75fbdd0a3d7def5ae1"},{"fixed":"b938790e70540bf4f2e653dcd74b232494d06c8f"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52518.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}