CVE-2026-31425
kernel: rds: ib: reject FRMR registration before IB connection is established
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · April 13, 2026
Updated · June 28, 2026
Description
A flaw was found in the Linux kernel. A local user can trigger a null pointer dereference in the Reliable Datagram Sockets (RDS) over InfiniBand (IB) component. This occurs when sendmsg() with RDS_CMSG_RDMA_MAP is called on a new outgoing connection before the IB connection is fully established. Successful exploitation leads to a kernel crash, resulting in a Denial of Service (DoS).
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference