Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: net/iucv: Avoid explicit allocation of the cpumask variable on the stack. For the CONFIGCPUMASKOFFSTACK=y kernel, explicit allocation of the cpumask variable on the stack is not recommended, as it may cause a potential stack...

CVE-2026-81003 net/iucv: filter frames in afiucv_hs_rcv() by ingress device

In the Linux kernel, the following vulnerability has been resolved: net/iucv: filter frames in afiucvhsrcv by ingress device afiucvhsrcv selects a socket from iucvsklist by matching four 8-byte name fields in the transport header alone. No check is made against the netdevice the frame arrived on...

The vulnerability of the iucv_sock_getsockopt() function in the net/iucv/af_iucv.c module, which is part of the Linux kernel’s networking functions, allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the iucvsockgetsockopt function in the net/iucv/afiucv.c module, which implements networking functions in the Linux kernel, is related to the pointer manipulation. Exploiting this vulnerability could allow an attacker to compromise the confidentiality, integrity, and...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerabilities have been resolved: net/iucv: Fixed the issue where iucvsockclose was used after memory was freed. The iucvseverpath function is called from both process context and thread context. The iucv-path variable is used to indicate whether someone else ...

SUSE CVE-2026-68397

In the Linux kernel, the following vulnerability has been resolved: net/iucv: take a reference on the socket found in afiucvhsrcv afiucvhsrcv looks up the destination socket under iucvsklist.lock, drops the lock, and then passes the socket to the afiucvhscallback handlers without holding a...

CVE-2026-68140

A flaw was found in the Linux kernel. This use-after-free vulnerability exists in the net/iucv component. When a peer severs a connection, message notifications that still reference the freed connection path remain in a queue. A subsequent attempt to process these stale notifications can lead to...

CVE-2026-68397

A flaw was found in the Linux kernel's net/iucv module. The afiucvhsrcv function fails to properly manage socket references. This allows a local attacker to trigger a use-after-free vulnerability by concurrently closing a socket while it is being processed. Successful exploitation can lead to a...

net/iucv: fix use-after-free of a severed iucv_path

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net/iucv: take a reference on the socket found in afiucv_hs_rcv()

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CVE-2026-68397

The CVE-2026-68397 issue affects the Linux kernel net/iucv code: afiucv_hs_rcv() may pass a destination socket to handlers without holding a reference, allowing a concurrent close to free the socket before the handler dereferences it (e.g., sk->sk_data_ready()) because AF_IUCV sockets aren’t R...

EUVD-2026-55522

In the Linux kernel, the following vulnerability has been resolved: net/iucv: fix use-after-free of a severed iucvpath afiucv queues not-yet-received message notifications on iucv-messageq, each holding a raw pointer to the connection's iucvpath. When the peer severs the connection, iucvseverpath...

Linux Distros Unpatched Vulnerability : CVE-2026-68140

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net/iucv: fix use-after-free of a severed iucvpath afiucv queues not-yet-received message notifications on iucv-messageq, each holding a raw pointer to the...

CVE-2026-64004

In the Linux kernel, the following vulnerability has been resolved: net/iucv: fix locking in .getsockopt Mirror iucvsocksetsockopt and wrap the whole switch in locksock/releasesock. The pre-existing SOMSGLIMIT-only lock becomes redundant and is removed. Any AFIUCV HIPER user can potentially crash...

CVE-2026-64004 net/iucv: fix locking in .getsockopt

In the Linux kernel, the following vulnerability has been resolved: net/iucv: fix locking in .getsockopt Mirror iucvsocksetsockopt and wrap the whole switch in locksock/releasesock. The pre-existing SOMSGLIMIT-only lock becomes redundant and is removed. Any AFIUCV HIPER user can potentially crash...

EUVD-2026-45577

In the Linux kernel, the following vulnerability has been resolved: net/iucv: fix locking in .getsockopt Mirror iucvsocksetsockopt and wrap the whole switch in locksock/releasesock. The pre-existing SOMSGLIMIT-only lock becomes redundant and is removed. Any AFIUCV HIPER user can potentially crash...

Unity Linux 20.1070e Security Update: kernel (UTSA-2025-992683)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-992683 advisory. In the Linux kernel, the following vulnerability has been resolved: net/iucv: Fix size of interrupt data iucvirqdata needs to be 4 bytes larger. These bytes are not...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2025-990810)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-990810 advisory. In the Linux kernel, the following vulnerability has been resolved: net/iucv: Fix size of interrupt data iucvirqdata needs to be 4 bytes larger. These bytes are not...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-990500)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-990500 advisory. In the Linux kernel, the following vulnerability has been resolved: net/iucv: Avoid explicit cpumask var allocation on stack For CONFIGCPUMASKOFFSTACK=y kernel,...

Unity Linux 20.1070e Security Update: kernel (UTSA-2025-989893)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-989893 advisory. In the Linux kernel, the following vulnerability has been resolved: net/iucv: Avoid explicit cpumask var allocation on stack For CONFIGCPUMASKOFFSTACK=y kernel,...

Unity Linux 20.1070e Security Update: kernel (UTSA-2025-986595)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-986595 advisory. In the Linux kernel, the following vulnerability has been resolved: net/iucv: Avoid explicit cpumask var allocation on stack For CONFIGCPUMASKOFFSTACK=y kernel,...