CVE-2026-90414
kernel: IB/isert: reject PDUs declaring more data than was received
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 17, 2026
Updated · October 30, 2026
Description
A flaw was found in the Linux kernel's IB/isert module. A remote attacker, after successful login, could send a specially crafted data packet (PDU) with a declared length exceeding the actual received data. This could lead to an out-of-bounds read of the receive buffer, potentially causing a system crash and resulting in a Denial of Service (DoS).
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 6.8CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
CWE-125 · Out-of-bounds Read