Improper Validation of Specified Quantity in Input in Linux kernel - CVE-2026-89528
Published: September 12, 2026
Vulnerability identifier: #VU149279
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89528
CWE-ID: CWE-1284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper validation of cumulative Read segment lengths in the SVCRDMA Read list processing when processing a Read list containing multiple segments whose cumulative length exceeds the page budget. A remote attacker can send a crafted Read list to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-89528
Install security update from vendor's repository.