SB2026062521 - Race condition in Linux kernel block drbd driver
Published: June 25, 2026
Security Bulletin ID
SB2026062521
CSH 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 vulnerability.
1) Race condition (CVE-ID: CVE-2026-53128)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper synchronization in drbd_adm_dump_devices() and drbd_adm_dump_peer_devices() when handling netlink dump requests with a resource filter. A local user can send a specially crafted netlink request to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1f112240531f0a0b437b2e001c1d89e8b25a8328
- https://git.kernel.org/stable/c/282e06e6d494a7bee85af78c747527b7d4009cc3
- https://git.kernel.org/stable/c/2b31e86387e60b3689339f0f0fbb4d3623d9d494
- https://git.kernel.org/stable/c/68ebb9183ac3621b96b18e046841eadb9508783c
- https://git.kernel.org/stable/c/6cd27bcb71bb73f955d104cc3a62be6f83724392
- https://git.kernel.org/stable/c/8092713a10c19fa0f731b71b2853af4319ca54fd
- https://git.kernel.org/stable/c/996d279f2c985d771d6cfdd923e447d825726e06
- https://git.kernel.org/stable/c/ae12bb44b392637a8321ade305c883f9ffc0daea