CVE-2026-98360 Linux Kernel RDMA/rxe - Use After Free

Linux kernel RDMA/rxe contains a use-after-free vulnerability caused by premature insertion of multicast groups into mcg_tree before rxe_mcast_add() succeeds, letting local userspace RDMA clients cause memory corruption, exploit requires local user access.

CVSS base score 7.0 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.13% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Use After Free
Impact
Denial Of Service, Privilege Escalation
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
6 October 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix for this issue.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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