SB2024102181 - Use-after-free in Linux kernel bluetooth
Published: October 21, 2024 Updated: May 12, 2025
Security Bulletin ID
SB2024102181
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2024-49950)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the l2cap_connect_req() function in net/bluetooth/l2cap_core.c, within the hci_remote_features_evt() function in net/bluetooth/hci_event.c, within the hci_acldata_packet() function in net/bluetooth/hci_core.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/b90907696c30172b809aa3dd2f0caffae761e4c6
- https://git.kernel.org/stable/c/78d30ce16fdf9c301bcd8b83ce613cea079cea83
- https://git.kernel.org/stable/c/a1c6174e23df10b8e5770e82d63bc6e2118a3dc7
- https://git.kernel.org/stable/c/333b4fd11e89b29c84c269123f871883a30be586
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.174
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.118
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.55