CVE-2023-52518

CVE.org · Published

Record status: Published
Identifier year (not publication year): 2023
Source publication: Mar 2, 2024
Source updated: May 11, 2026
Imported by cveboard: Oct 24, 2026
Source snapshot: cve_2026-10-24_midnight_baseline · Oct 24, 2026

CNA source text (English)

Bluetooth: hci_codec: Fix leaking content of local_codecs

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_codec: Fix leaking content of local_codecs The following memory leak can be observed when the controller supports codecs which are stored in local_codecs list but the elements are never freed: unreferenced object 0xffff88800221d840 (size 32): comm "kworker/u3:0", pid 36, jiffies 4294898739 (age 127.060s) hex dump (first 32 bytes): f8 d3 02 03 80 88 ff ff 80 d8 21 02 80 88 ff ff ..........!..... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<ffffffffb324f557>] __kmalloc+0x47/0x120 [<ffffffffb39ef37d>] hci_codec_list_add.isra.0+0x2d/0x160 [<ffffffffb39ef643>] hci_read_codec_capabilities+0x183/0x270 [<ffffffffb39ef9ab>] hci_read_supported_codecs+0x1bb/0x2d0 [<ffffffffb39f162e>] hci_read_local_codecs_sync+0x3e/0x60 [<ffffffffb39ff1b3>] hci_dev_open_sync+0x943/0x11e0 [<ffffffffb396d55d>] hci_power_on+0x10d/0x3f0 [<ffffffffb30c99b4>] process_one_work+0x404/0x800 [<ffffffffb30ca134>] worker_thread+0x374/0x670 [<ffffffffb30d9108>] kthread+0x188/0x1c0 [<ffffffffb304db6b>] ret_from_fork+0x2b/0x50 [<ffffffffb300206a>] ret_from_fork_asm+0x1a/0x30

Scoped product and version facts

Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.

Exploitation unknown; this catalogue does not assess exploitation.

Linux

Vendor: Linux
Product: Linux
Platforms: Unknown
Default status: unaffected

Linux · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
8961987f3f5fa2f2618e72304d013c8dd5e604a6	`affected`	git	626535077ba9dc110787540d1fe24881094c15a1	Unavailable	None listed
8961987f3f5fa2f2618e72304d013c8dd5e604a6	`affected`	git	eea5a8f0c3b7c884d2351e75fbdd0a3d7def5ae1	Unavailable	None listed
8961987f3f5fa2f2618e72304d013c8dd5e604a6	`affected`	git	b938790e70540bf4f2e653dcd74b232494d06c8f	Unavailable	None listed

Linux

Vendor: Linux
Product: Linux
Platforms: Unknown
Default status: affected

Linux · Scoped product and version facts
Version (version)	Status (status)	Version scheme (versionType)	Exclusive end (lessThan)	Inclusive end (lessThanOrEqual)	Status changes (at → status)
5.16	`affected`	Unavailable	Unavailable	Unavailable	None listed
0	`unaffected`	semver	5.16	Unavailable	None listed
6.1.57	`unaffected`	semver	Unavailable	6.1.*	None listed
6.5.7	`unaffected`	semver	Unavailable	6.5.*	None listed
6.6	`unaffected`	original_commit_for_fix	Unavailable	*	None listed