SB2025100805 - Memory leak in Linux kernel net driver
Published: October 8, 2025 Updated: October 27, 2025
Security Bulletin ID
SB2025100805
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Memory leak (CVE-ID: CVE-2023-53685)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the tun_get_user() and tun_xdp_one() functions in drivers/net/tun.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.