hv_netvsc: use kmap_local_page in netvsc_copy_to_send_buf

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CVE-2026-53199

A flaw was found in the Linux kernel's Hyper-V network virtual service client hvnetvsc component. This vulnerability occurs in the netvsccopytosendbuf function, where incorrect memory mapping of page buffer entries can lead to a system fault. Specifically, on 32-bit x86 systems with high memory...

CVE-2026-53199

In the Linux kernel, the following vulnerability has been resolved: hvnetvsc: use kmaplocalpage in netvsccopytosendbuf netvsccopytosendbuf copies page buffer entries into the VMBus send buffer using phystovirt on the entry PFN. Entries for the RNDIS header and the skb linear data come from...

CVE-2026-53199 hv_netvsc: use kmap_local_page in netvsc_copy_to_send_buf

In the Linux kernel, the following vulnerability has been resolved: hvnetvsc: use kmaplocalpage in netvsccopytosendbuf netvsccopytosendbuf copies page buffer entries into the VMBus send buffer using phystovirt on the entry PFN. Entries for the RNDIS header and the skb linear data come from...

CVE-2026-53199 hv_netvsc: use kmap_local_page in netvsc_copy_to_send_buf

In the Linux kernel, the following vulnerability has been resolved: hvnetvsc: use kmaplocalpage in netvsccopytosendbuf netvsccopytosendbuf copies page buffer entries into the VMBus send buffer using phystovirt on the entry PFN. Entries for the RNDIS header and the skb linear data come from...

CVE-2026-53199

In the Linux kernel, the following vulnerability has been resolved: hvnetvsc: use kmaplocalpage in netvsccopytosendbuf netvsccopytosendbuf copies page buffer entries into the VMBus send buffer using phystovirt on the entry PFN. Entries for the RNDIS header and the skb linear data come from...

PT-2026-52295

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the netvsc copy to send buf function where page buffer entries are copied into the VMBus send buffer using phys to virt on the entry PFN. On 32-bit x86 systems with...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: sctp: Check the send stream number after waitforsndbuf This patch addresses a corner case where the number of out streams may change after waitforsndbuf is called. When the main thread in the client initiates a connection, if the...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: TCP: Fixed a signed-integer overflow bug in tcpaddbacklog The types of skrcvbuf and sksndbuf within the struct sock structure are int. In tcpaddbacklog, the limit for these variables is calculated by adding skrcvbuf, sksndbuf, an...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: NFSD: Protection against send buffer overflow in NFSv2 READ Since the time before the advent of Git, NFSD has managed the number of pages held by each nfsd thread by combining the RPC receive and send buffers into a single array ...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-021537)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-021537 advisory. In the Linux kernel, the following vulnerability has been resolved: NFSD: Protect against send buffer overflow in NFSv2 READ Since before the git era, NFSD has...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-010835)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-010835 advisory. In the Linux kernel, the following vulnerability has been resolved: tcp: fix a signed-integer-overflow bug in tcpaddbacklog The type of skrcvbuf and sksndbuf in stru...

SUSE CVE-2026-23243

In the Linux kernel, the following vulnerability has been resolved: RDMA/umad: Reject negative datalen in ibumadwrite ibumadwrite computes datalen from user-controlled count and the MAD header sizes. With a mismatched user MAD header size and RMPP header length, datalen can become negative and...

EUVD-2026-12804

In the Linux kernel, the following vulnerability has been resolved: RDMA/umad: Reject negative datalen in ibumadwrite ibumadwrite computes datalen from user-controlled count and the MAD header sizes. With a mismatched user MAD header size and RMPP header length, datalen can become negative and...

UBUNTU-CVE-2026-23243

In the Linux kernel, the following vulnerability has been resolved: RDMA/umad: Reject negative datalen in ibumadwrite ibumadwrite computes datalen from user-controlled count and the MAD header sizes. With a mismatched user MAD header size and RMPP header length, datalen can become negative and...

Unity Linux 20.1070a Security Update: kernel (UTSA-2026-005789)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005789 advisory. In the Linux kernel, the following vulnerability has been resolved: NFSD: Protect against send buffer overflow in NFSv2 READ Since before the git era, NFSD has...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-005580)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005580 advisory. In the Linux kernel, the following vulnerability has been resolved: sctp: check send stream number after waitforsndbuf This patch fixes a corner case where the asoc...

kernel: tcp: fix a signed-integer-overflow bug in tcp_add_backlog()

A flaw was found in the Linux kernel’s TCP implementation in the function tcpaddbacklog. When calculating the maximum acceptable backlog for TCP sockets, the sum of the receive buffer skrcvbuf, the send buffer sksndbuf, and a fixed constant may exceed the maximum value of a signed integer due to...

kernel: tcp: fix a signed-integer-overflow bug in tcp_add_backlog()

A flaw was found in the Linux kernel’s TCP implementation in the function tcpaddbacklog. When calculating the maximum acceptable backlog for TCP sockets, the sum of the receive buffer skrcvbuf, the send buffer sksndbuf, and a fixed constant may exceed the maximum value of a signed integer due to...

kernel: tcp: fix a signed-integer-overflow bug in tcp_add_backlog()

A flaw was found in the Linux kernel’s TCP implementation in the function tcpaddbacklog. When calculating the maximum acceptable backlog for TCP sockets, the sum of the receive buffer skrcvbuf, the send buffer sksndbuf, and a fixed constant may exceed the maximum value of a signed integer due to...