CVE-2026-89530 Linux Kernel svcrdma - Buffer Overflow

Linux kernel svcrdma contains a buffer overflow caused by improper handling of inline replies that exceed the pull-up buffer size, letting remote RPC-over-RDMA clients cause memory corruption, exploit requires crafted RPC requests without Write list or Reply chunk.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.46% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Denial Of Service, Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
11 September 2026
Updated
15 October 2026

Vendor fix

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

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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