SB20250502133 - Use-after-free in Linux kernel bluetooth
Published: May 2, 2025 Updated: May 10, 2025
Security Bulletin ID
SB20250502133
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 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2022-49909)
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_data_channel() function in net/bluetooth/l2cap_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/0d0e2d032811280b927650ff3c15fe5020e82533
- https://git.kernel.org/stable/c/17c6164854f8bb80bf76f32b2c2f199c16b53703
- https://git.kernel.org/stable/c/7f7bfdd9a9af3b12c33d9da9a012e7f4d5c91f4b
- https://git.kernel.org/stable/c/8f7e4cf0694149a5d999d676ebd9ecf1b4cb2cc9
- https://git.kernel.org/stable/c/a3a7b2ac64de232edb67279e804932cb42f0b52a
- https://git.kernel.org/stable/c/c1f594dddd9ffd747c39f49cc5b67a9b7677d2ab
- https://git.kernel.org/stable/c/d9ec6e2fbd4a565b2345d4852f586b7ae3ab41fd
- https://git.kernel.org/stable/c/db4a0783ed78beb2ebaa32f5f785bfd79c580689
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.333