SB20250916162 - NULL pointer dereference in Linux kernel xdp
Published: September 16, 2025 Updated: September 22, 2025
Security Bulletin ID
SB20250916162
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) NULL pointer dereference (CVE-ID: CVE-2023-53240)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the xsk_build_skb(), xsk_generic_xmit(), xsk_no_wakeup(), __xsk_sendmsg(), __xsk_recvmsg() and xsk_poll() functions in net/xdp/xsk.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.