PT-2026-61321 · Linux+1 · Linux Kernel+1
CVE-2026-64004
·
Published
2026-05-22
·
Updated
2026-09-07
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A race condition exists in the net/iucv component when
recvmsg() is called simultaneously with getsockopt(SO MSGSIZE). An AF IUCV HIPER user can trigger a NULL pointer dereference because the SO MSGSIZE operation attempts to access iucv->hs dev->mtu after iucv sock close() has already set hs dev to NULL, leading to a kernel crash.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Linux Kernel
Ubuntu