CVE-2026-98253

A flaw was found in the Linux kernel's RDMA Remote Direct Memory Access subsystem. A local attacker can cause a Denial of Service DoS or memory corruption by exploiting a race condition in the User Connection Manager Access ucma component. This issue occurs when concurrent multicast join requests...

DEBIAN-CVE-2026-98253

In the Linux kernel, the following vulnerability has been resolved: RDMA/ucma: Serialize join and leave on copytouser failure rdmajoinmulticast queues RoCE work that later reads the ucmamulticast through event-param.ud.privatedata, then listadds the CMA multicast at the head of idpriv-mclist...

AZL-106368 CVE-2026-98253 affecting package kernel 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: RDMA/ucma: Serialize join and leave on copytouser failure rdmajoinmulticast queues RoCE work that later reads the ucmamulticast through event-param.ud.privatedata, then listadds the CMA multicast at the head of idpriv-mclist...

CVE-2026-98253

In the Linux kernel, the following vulnerability has been resolved: RDMA/ucma: Serialize join and leave on copytouser failure rdmajoinmulticast queues RoCE work that later reads the ucmamulticast through event-param.ud.privatedata, then listadds the CMA multicast at the head of idpriv-mclist...

CVE-2026-98253

In the Linux kernel, the following vulnerability has been resolved: RDMA/ucma: Serialize join and leave on copytouser failure rdmajoinmulticast queues RoCE work that later reads the ucmamulticast through event-param.ud.privatedata, then listadds the CMA multicast at the head of idpriv-mclist...

UBUNTU-CVE-2026-98253

In the Linux kernel, the following vulnerability has been resolved: RDMA/ucma: Serialize join and leave on copytouser failure rdmajoinmulticast queues RoCE work that later reads the ucmamulticast through event-param.ud.privatedata, then listadds the CMA multicast at the head of idpriv-mclist...

CVE-2026-98253

The Linux kernel is vulnerable to a race condition in the RDMA/ucma component during concurrent JOIN_MCAST calls. The root cause is that ucma_process_join() previously released ctx->mutex after a successful join, allowing two concurrent calls with the same address to insert a second CMA entry....

CVE-2026-98253 RDMA/ucma: Serialize join and leave on copy_to_user failure

In the Linux kernel, the following vulnerability has been resolved: RDMA/ucma: Serialize join and leave on copytouser failure rdmajoinmulticast queues RoCE work that later reads the ucmamulticast through event-param.ud.privatedata, then listadds the CMA multicast at the head of idpriv-mclist...

EUVD-2026-93181

In the Linux kernel, the following vulnerability has been resolved: RDMA/ucma: Serialize join and leave on copytouser failure rdmajoinmulticast queues RoCE work that later reads the ucmamulticast through event-param.ud.privatedata, then listadds the CMA multicast at the head of idpriv-mclist...

CVE-2026-98253

In the Linux kernel, the following vulnerability has been resolved: RDMA/ucma: Serialize join and leave on copytouser failure rdmajoinmulticast queues RoCE work that later reads the ucmamulticast through event-param.ud.privatedata, then listadds the CMA multicast at the head of idpriv-mclist...

CVE-2026-98253 RDMA/ucma: Serialize join and leave on copy_to_user failure

In the Linux kernel, the following vulnerability has been resolved: RDMA/ucma: Serialize join and leave on copytouser failure rdmajoinmulticast queues RoCE work that later reads the ucmamulticast through event-param.ud.privatedata, then listadds the CMA multicast at the head of idpriv-mclist...

CVE-2026-98253: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: RDMA/ucma: Serialize join and leave on copytouser failure rdmajoinmulticast queues RoCE work that later reads the ucmamulticast through event-param.ud.privatedata, then listadds the CMA multicast at the head of idpriv-mclist...

Linux Distros Unpatched Vulnerability : CVE-2026-98253

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - RDMA/ucma: Serialize join and leave on copytouser failure rdmajoinmulticast queues RoCE work that later reads the ucmamulticast through...

PT-2026-106582

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the RDMA/ucma component where ucma process join drops the ctx-mutex after a successful join and only retakes it if copy to user fails. This allows two concurrent JOIN...

Astra Linux – Vulnerability in Linux

A issue was discovered in the Linux kernel before version 5.10. The file drivers/infiniband/core/ucma.c contains a use-after-free, as the context of the ctx variable is accessed through ctxlist in certain situations where ucmamigrateid is called, specifically when ucmaclose is invoked. This issue...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: RDMA/ucma: Protects mc during concurrent multicast leaves. The commit mentioned in the “Fixes” section has been partially reverted to ensure that the allocation and erasure of multicast structures are locked. BUG: KASAN:...

SUSE CVE-2026-89507

In the Linux kernel, the following vulnerability has been resolved: RDMA/ucma: Lock the handler in ucmawritecmevent ctx-file may only be changed under the handler lock and the xalock, which is what stops uevents being queued for a ctx while ucmamigrateid moves it to another file. The CM core take...

SUSE CVE-2026-89508

In the Linux kernel, the following vulnerability has been resolved: RDMA/ucma: Lock the handler in ucmasetibpath ucmasetibpath calls ucmaeventhandler straight from the write path, without the handler lock that keeps ctx-file stable while a uevent is queued. The handler re-reads ctx-file for every...

Linux Distros Unpatched Vulnerability : CVE-2026-89507

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - RDMA/ucma: Lock the handler in ucmawritecmevent ctx-file may only be changed under the handler lock and the xalock, which is what stops uevents being queued fo...

Linux Distros Unpatched Vulnerability : CVE-2026-89508

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - RDMA/ucma: Lock the handler in ucmasetibpath ucmasetibpath calls ucmaeventhandler straight from the write path, without the handler lock that keeps ctx-file...