EUVD-2026-76394

In the Linux kernel, the following vulnerability has been resolved: openvswitch: Fix CT limit teardown use-after-free Packet processing uses CT limit state under RCU, while netns teardown frees that state under ovsmutex. The CT limit pointer was neither removed from readers nor protected by a gra...

CVE-2026-89488

In the Linux kernel, the following vulnerability has been resolved: openvswitch: Fix CT limit teardown use-after-free Packet processing uses CT limit state under RCU, while netns teardown frees that state under ovsmutex. The CT limit pointer was neither removed from readers nor protected by a gra...

EUVD-2026-76317

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix flow mask use-after-free on flow deletion The commit in the Fixes tag below made so flow-mask free is scheduled via RCU right after it is removed from the flow table. The pointer stays in the flow structure...

CVE-2026-80994 net: openvswitch: fix flow mask use-after-free on flow deletion

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix flow mask use-after-free on flow deletion The commit in the Fixes tag below made so flow-mask free is scheduled via RCU right after it is removed from the flow table. The pointer stays in the flow structure...

CVE-2026-80994 net: openvswitch: fix flow mask use-after-free on flow deletion

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix flow mask use-after-free on flow deletion The commit in the Fixes tag below made so flow-mask free is scheduled via RCU right after it is removed from the flow table. The pointer stays in the flow structure...

CVE-2026-80994

CVE-2026-80994 is a use-after-free vulnerability in the Linux kernel's Open vSwitch (OVS) datapath . During flow deletion (CMD_DEL), the flow mask is freed via RCU after removal from the flow table, but ovs_flow_cmd_fill_info() subsequently dereferences the flow->mask pointer without effective...

CVE-2026-80994

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix flow mask use-after-free on flow deletion The commit in the Fixes tag below made so flow-mask free is scheduled via RCU right after it is removed from the flow table. The pointer stays in the flow structure...

CVE-2026-80977

In the Linux kernel, the following vulnerability has been resolved: net: skbuff: don't touch shared zerocopy state in skbtxerror skbtxerror completes the zerocopy uarg and clears SKBFLALLZEROCOPY, and skbzcopydowngrademanaged clears SKBFLMANAGEDFRAGREFS. Both live in skbshinfo, which every clone...

CVE-2026-80977

CVE-2026-80977 affects the Linux kernel networking subsystem , specifically the skb_tx_error() function in the skbuff layer. When a cloned socket buffer is processed, skb_tx_error() prematurely clears shared zerocopy state (SKBFL_ALL_ZEROCOPY) and drops SKBFL_SHARED_FRAG while the original skb is...

EUVD-2026-76300

In the Linux kernel, the following vulnerability has been resolved: net: skbuff: don't touch shared zerocopy state in skbtxerror skbtxerror completes the zerocopy uarg and clears SKBFLALLZEROCOPY, and skbzcopydowngrademanaged clears SKBFLMANAGEDFRAGREFS. Both live in skbshinfo, which every clone...

CVE-2026-80977 net: skbuff: don't touch shared zerocopy state in skb_tx_error()

In the Linux kernel, the following vulnerability has been resolved: net: skbuff: don't touch shared zerocopy state in skbtxerror skbtxerror completes the zerocopy uarg and clears SKBFLALLZEROCOPY, and skbzcopydowngrademanaged clears SKBFLMANAGEDFRAGREFS. Both live in skbshinfo, which every clone...

PT-2026-90107

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw in zerocopy state handling within the skb tx error function in net/skbuff allows for local privilege escalation. The issue occurs because skb tx error completes the zerocopy uarg...

CVE-2026-80977: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net: skbuff: don't touch shared zerocopy state in skbtxerror skbtxerror completes the zerocopy uarg and clears SKBFLALLZEROCOPY, and skbzcopydowngrademanaged clears SKBFLMANAGEDFRAGREFS. Both live in skbshinfo, which every clone...

The vulnerability of the ovs_flow_cmd_set() function in the net_openvswitch/datapath.c module, which is part of the Open vSwitch router support in the Linux operating system, allows a hacker to cause a service failure.

The vulnerability of the ovsflowcmdset function in the netopenvswitch/datapath.c module, which is part of the Open vSwitch switchboard for Linux operating systems, involves releasing an incorrect pointer. Exploiting this vulnerability could allow a attacker to cause a service failure...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reject oversized nested action attrs Open vSwitch stores generated flow actions as nlattrs, where the nlalen field is of type u16. The vulnerability committed in a1e64addf3ff „net: openvswitch: remove misbehavin...

The vulnerability of the `ovs_netdev_tunnelDestroy()` function in the `net/openvswitch/vport-netdev.c` module, which supports Open vSwitch routers in the Linux operating system, allows a malicious actor to cause a service failure.

The vulnerability of the ovsnetdevtunnelDestroy function in the net/openvswitch/vport-netdev.c module, which supports Open vSwitch routers in the Linux operating system, is related to the occurrence of mutual locking. Exploiting this vulnerability could allow an attacker to cause a service failur...

The vulnerability in the net_openvswitch/flow_netlink.c module of the Linux operating system allows a hacker to increase their privileges.

The vulnerability of the netopenvswitch/flownetlink.c module in the Linux operating system is related to errors in processing parameter length settings. Exploiting this vulnerability can allow an attacker to increase their privileges...

The vulnerability of the Open vSwitch software-based multi-level switch lies in the reading of data beyond the allowed buffer limits, which allows a hacker to cause a service failure.

The vulnerability of the Open vSwitch multi-level switch lies in reading data from buffers beyond their acceptable limits. Exploiting this vulnerability can allow a malicious actor to cause service interruptions remotely...

The vulnerability of the Open vSwitch multi-level switch software lies in the fact that an operation outside the buffer boundaries in memory can lead to a service failure for the attacker.

The vulnerability of the Open vSwitch multi-level switch lies in the fact that the output of operations goes beyond the buffer in memory. Exploiting this vulnerability can allow a remote attacker to cause a service failure...

USN-8658-4 linux-azure-fde-5.15 vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Open vSwitch; - SCTP protocol; CVE-2026-53224, CVE-2026-53246, CVE-2026-64531...