SB2025100518 - NULL pointer dereference in Linux kernel block drbd driver
Published: October 5, 2025 Updated: October 27, 2025
Security Bulletin ID
SB2025100518
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-2022-50506)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the drbd_req_new() and drbd_request_prepare() functions in drivers/block/drbd/drbd_req.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.