SB20261029130 - Access of Uninitialized Pointer in Linux kernel rds

Description

This security bulletin contains information about 1 vulnerability.

1) Access of Uninitialized Pointer (CVE-ID: CVE-2026-99166)

CWE-ID: CWE-824 - Access of Uninitialized Pointer

CVSSv4: 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]

The vulnerability allows a remote attacker to cause a denial of service by crashing the Linux kernel.

The vulnerability exists due to an uninitialized pointer dereference in rds_rdma_cm_event_handler_cmn() when handling connection requests received on non-InfiniBand RDMA devices. A remote attacker can send a connection request to an RDS listener on an iWARP device to trigger a dereference of the uninitialized transport pointer and crash the kernel.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/492ba6ac1b1ffb8a06ff52db0825c1af2cdb28c8
• https://git.kernel.org/stable/c/5f23e4e3a31dacfd82a8f56be253adc0910ee84f
• https://git.kernel.org/stable/c/ca14c289ed9ffed6cc64290d039e923e5720a8bf