CVE-2023-54038
Bluetooth: hci_conn: return ERR_PTR instead of NULL when there is no link
Severity Score
"-"
*CVSS v-
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_conn: return ERR_PTR instead of NULL when there is no link hci_connect_sco currently returns NULL when there is no link (i.e. when
hci_conn_link() returns NULL). sco_connect() expects an ERR_PTR in case of any error (see line 266 in
sco.c). Thus, hcon set as NULL passes through to sco_conn_add(), which
tries to get hcon->hdev, resulting in dereferencing a NULL pointer as
reported by syzkaller. The same issue exists for iso_connect_cis() calling hci_connect_cis(). Thus, make hci_connect_sco() and hci_connect_cis() return ERR_PTR
instead of NULL.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2025-12-24 CVE Reserved
- 2025-12-24 CVE Published
- 2025-12-24 CVE Updated
- 2025-12-24 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (4)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/06149746e7203d5ffe2d6faf9799ee36203aa8b8 | Vuln. Introduced | |
| https://git.kernel.org/stable/c/f72fc94a17d45be98aecfd59c39b5b24a6a342e2 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://git.kernel.org/stable/c/357ab53c83a5322437fa434e9a9e3e0bafe6b383 | 2023-07-27 | |
| https://git.kernel.org/stable/c/b4066eb04bb67e7ff66e5aaab0db4a753f37eaad | 2023-07-20 |
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.4 < 6.4.7 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.4 < 6.4.7" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.4 < 6.5 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.4 < 6.5" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 6.3.8 Search vendor "Linux" for product "Linux Kernel" and version "6.3.8" | en |
Affected
| ||||||