CVE-2025-38593 — Double Free in Linux
CWE-415 — Double FreeCWE-476 — NULL Pointer DereferenceCWE-787 — Out-of-bounds Write48 documents7 sources
Severity
7.8HIGHNVD
OSV3.2
EPSS
0.0%
top 95.96%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedAug 19
Latest updateMar 25
Description
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_sync: fix double free in 'hci_discovery_filter_clear()'
Function 'hci_discovery_filter_clear()' frees 'uuids' array and then
sets it to NULL. There is a tiny chance of the following race:
'hci_cmd_sync_work()'
'update_passive_scan_sync()'
'hci_update_passive_scan_sync()'
'hci_discovery_filter_clear()'
kfree(uuids);
'start_service_discovery()'
'hci_discovery_filter_clear()'
kfree(uuids); // DOUBLE FREE
…
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9