CVE-2026-93228 Linux Kernel - Denial of Service

Linux kernel contains a vulnerability in svcrdma where Write/Reply chunks with segcount 0 are improperly accepted, caused by insufficient validation in xdr_check_write_chunk, letting remote peers send malformed chunks, exploit requires network access to send crafted RDMA packets.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.47% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Published
24 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix for rejecting Write/Reply chunks with segcount 0.

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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