openvswitch
by Linux
Source repositories
CVEs (23)
| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2026-68123 | Cri | 0.64 | 9.8 | 0.01 | Aug 10, 2026 | In the Linux kernel, the following vulnerability has been resolved: openvswitch: fix GSO userspace truncation underflow OVS_ACTION_ATTR_TRUNC currently stores a delta from the original skb length in OVS_CB(skb)->cutlen. When a later userspace action segments a GSO skb,… | ||
| CVE-2024-38558 | Cri | 0.58 | 10.0 | 0.01 | Jun 19, 2024 | In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix overwriting ct original tuple for ICMPv6 OVS_PACKET_CMD_EXECUTE has 3 main attributes: - OVS_PACKET_ATTR_KEY - Packet metadata in a netlink format. - OVS_PACKET_ATTR_PACKET - Binary… | ||
| CVE-2026-74465 | Hig | 0.51 | 7.8 | 0.00 | Aug 15, 2026 | In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix potential UAF on meter attach failure While attaching a newly created meter attach_meter() function makes the new meter visible to other CPUs but can still fail afterwards. On failure, it… | ||
| CVE-2025-37998 | Hig | 0.51 | 7.8 | 0.00 | May 29, 2025 | In the Linux kernel, the following vulnerability has been resolved: openvswitch: Fix unsafe attribute parsing in output_userspace() This patch replaces the manual Netlink attribute iteration in output_userspace() with nla_for_each_nested(), which ensures that only well-formed… | ||
| CVE-2025-37789 | Hig | 0.51 | 7.8 | 0.00 | May 1, 2025 | In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix nested key length validation in the set() action It's not safe to access nla_len(ovs_key) if the data is smaller than the netlink header. Check that the attribute is OK first. | ||
| CVE-2024-27395 | Hig | 0.51 | 7.8 | 0.00 | May 14, 2024 | In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: Fix Use-After-Free in ovs_ct_exit Since kfree_rcu, which is called in the hlist_for_each_entry_rcu traversal of ovs_ct_limit_exit, is not part of the RCU read critical section, it is possible… | ||
| CVE-2026-89488 | Hig | 0.44 | 7.8 | 0.00 | Sep 11, 2026 | 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 ovs_mutex. The CT limit pointer was neither removed from readers… | ||
| CVE-2026-89487 | Hig | 0.44 | 7.8 | 0.00 | Sep 11, 2026 | In the Linux kernel, the following vulnerability has been resolved: openvswitch: only skb_tx_error() a packet we are about to drop queue_userspace_packet() borrows the packet skb -- it only copies it into a private netlink message (user_skb) and does not own it; on return… | ||
| CVE-2026-80994 | Hig | 0.44 | 7.8 | 0.00 | Sep 11, 2026 | 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… | ||
| CVE-2026-74701 | Hig | 0.44 | 7.8 | 0.00 | Aug 22, 2026 | In the Linux kernel, the following vulnerability has been resolved: net/openvswitch: check Ethernet header length in key_extract() When a packet arrives on an ARPHRD_NONE device (e.g. TUN), ovs_flow_key_extract() trusts the user-provided skb->protocol field: if it is… | ||
| CVE-2026-64531 | Hig | 0.44 | 7.8 | 0.00 | Jul 27, 2026 | 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, whose nla_len field is u16. Commit a1e64addf3ff ("net: openvswitch: remove misbehaving actions… | ||
| CVE-2026-31679 | Hig | 0.39 | 7.1 | 0.00 | Apr 25, 2026 | In the Linux kernel, the following vulnerability has been resolved: openvswitch: validate MPLS set/set_masked payload length validate_set() accepted OVS_KEY_ATTR_MPLS as variable-sized payload for SET/SET_MASKED actions. In action handling, OVS expects fixed-size MPLS key data… | ||
| CVE-2025-68785 | Hig | 0.39 | 7.1 | 0.00 | Jan 13, 2026 | In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix middle attribute validation in push_nsh() action The push_nsh() action structure looks like this: OVS_ACTION_ATTR_PUSH_NSH(OVS_KEY_ATTR_NSH(OVS_NSH_KEY_ATTR_BASE,...)) The outermost… | ||
| CVE-2023-52977 | Med | 0.36 | 5.5 | 0.00 | Mar 27, 2025 | In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix flow memory leak in ovs_flow_cmd_new Syzkaller reports a memory leak of new_flow in ovs_flow_cmd_new() as it is not freed when an allocation of a key fails. BUG: memory leak unreferenced… | ||
| CVE-2022-49086 | Med | 0.36 | 5.5 | 0.00 | Feb 26, 2025 | In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix leak of nested actions While parsing user-provided actions, openvswitch module may dynamically allocate memory and store pointers in the internal copy of the actions. So this memory has… | ||
| CVE-2025-21681 | Med | 0.36 | 5.5 | 0.00 | Jan 31, 2025 | In the Linux kernel, the following vulnerability has been resolved: openvswitch: fix lockup on tx to unregistering netdev with carrier Commit in a fixes tag attempted to fix the issue in the following sequence of calls: do_output -> ovs_vport_send ->… | ||
| CVE-2023-52702 | Med | 0.36 | 5.5 | 0.00 | May 21, 2024 | In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix possible memory leak in ovs_meter_cmd_set() old_meter needs to be free after it is detached regardless of whether the new meter is successfully attached. | ||
| CVE-2024-1151 | Med | 0.36 | 5.5 | 0.00 | Feb 11, 2024 | A vulnerability was reported in the Open vSwitch sub-component in the Linux Kernel. The flaw occurs when a recursive operation of code push recursively calls into the code block. The OVS module does not validate the stack depth, pushing too many frames and causing a stack… | ||
| CVE-2023-53188 | Med | 0.31 | 4.7 | 0.00 | Sep 15, 2025 | In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix race on port output assume the following setup on a single machine: 1. An openvswitch instance with one bridge and default flows 2. two network namespaces "server" and "client" 3. two ovs… | ||
| CVE-2026-53227 | Med | 0.29 | 5.5 | 0.00 | Jun 25, 2026 | In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix possible kfree_skb of ERR_PTR After the patch in the "Fixes" tag, the allocation of the "reply" skb can happen either before or after locking the ovs_mutex. However, error cleanups still… |
- risk 0.64cvss 9.8epss 0.01
In the Linux kernel, the following vulnerability has been resolved: openvswitch: fix GSO userspace truncation underflow OVS_ACTION_ATTR_TRUNC currently stores a delta from the original skb length in OVS_CB(skb)->cutlen. When a later userspace action segments a GSO skb,…
- risk 0.58cvss 10.0epss 0.01
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix overwriting ct original tuple for ICMPv6 OVS_PACKET_CMD_EXECUTE has 3 main attributes: - OVS_PACKET_ATTR_KEY - Packet metadata in a netlink format. - OVS_PACKET_ATTR_PACKET - Binary…
- risk 0.51cvss 7.8epss 0.00
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix potential UAF on meter attach failure While attaching a newly created meter attach_meter() function makes the new meter visible to other CPUs but can still fail afterwards. On failure, it…
- risk 0.51cvss 7.8epss 0.00
In the Linux kernel, the following vulnerability has been resolved: openvswitch: Fix unsafe attribute parsing in output_userspace() This patch replaces the manual Netlink attribute iteration in output_userspace() with nla_for_each_nested(), which ensures that only well-formed…
- risk 0.51cvss 7.8epss 0.00
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix nested key length validation in the set() action It's not safe to access nla_len(ovs_key) if the data is smaller than the netlink header. Check that the attribute is OK first.
- risk 0.51cvss 7.8epss 0.00
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: Fix Use-After-Free in ovs_ct_exit Since kfree_rcu, which is called in the hlist_for_each_entry_rcu traversal of ovs_ct_limit_exit, is not part of the RCU read critical section, it is possible…
- risk 0.44cvss 7.8epss 0.00
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 ovs_mutex. The CT limit pointer was neither removed from readers…
- risk 0.44cvss 7.8epss 0.00
In the Linux kernel, the following vulnerability has been resolved: openvswitch: only skb_tx_error() a packet we are about to drop queue_userspace_packet() borrows the packet skb -- it only copies it into a private netlink message (user_skb) and does not own it; on return…
- risk 0.44cvss 7.8epss 0.00
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…
- risk 0.44cvss 7.8epss 0.00
In the Linux kernel, the following vulnerability has been resolved: net/openvswitch: check Ethernet header length in key_extract() When a packet arrives on an ARPHRD_NONE device (e.g. TUN), ovs_flow_key_extract() trusts the user-provided skb->protocol field: if it is…
- risk 0.44cvss 7.8epss 0.00
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, whose nla_len field is u16. Commit a1e64addf3ff ("net: openvswitch: remove misbehaving actions…
- risk 0.39cvss 7.1epss 0.00
In the Linux kernel, the following vulnerability has been resolved: openvswitch: validate MPLS set/set_masked payload length validate_set() accepted OVS_KEY_ATTR_MPLS as variable-sized payload for SET/SET_MASKED actions. In action handling, OVS expects fixed-size MPLS key data…
- risk 0.39cvss 7.1epss 0.00
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix middle attribute validation in push_nsh() action The push_nsh() action structure looks like this: OVS_ACTION_ATTR_PUSH_NSH(OVS_KEY_ATTR_NSH(OVS_NSH_KEY_ATTR_BASE,...)) The outermost…
- risk 0.36cvss 5.5epss 0.00
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix flow memory leak in ovs_flow_cmd_new Syzkaller reports a memory leak of new_flow in ovs_flow_cmd_new() as it is not freed when an allocation of a key fails. BUG: memory leak unreferenced…
- risk 0.36cvss 5.5epss 0.00
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix leak of nested actions While parsing user-provided actions, openvswitch module may dynamically allocate memory and store pointers in the internal copy of the actions. So this memory has…
- risk 0.36cvss 5.5epss 0.00
In the Linux kernel, the following vulnerability has been resolved: openvswitch: fix lockup on tx to unregistering netdev with carrier Commit in a fixes tag attempted to fix the issue in the following sequence of calls: do_output -> ovs_vport_send ->…
- risk 0.36cvss 5.5epss 0.00
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix possible memory leak in ovs_meter_cmd_set() old_meter needs to be free after it is detached regardless of whether the new meter is successfully attached.
- risk 0.36cvss 5.5epss 0.00
A vulnerability was reported in the Open vSwitch sub-component in the Linux Kernel. The flaw occurs when a recursive operation of code push recursively calls into the code block. The OVS module does not validate the stack depth, pushing too many frames and causing a stack…
- risk 0.31cvss 4.7epss 0.00
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix race on port output assume the following setup on a single machine: 1. An openvswitch instance with one bridge and default flows 2. two network namespaces "server" and "client" 3. two ovs…
- risk 0.29cvss 5.5epss 0.00
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix possible kfree_skb of ERR_PTR After the patch in the "Fixes" tag, the allocation of the "reply" skb can happen either before or after locking the ovs_mutex. However, error cleanups still…
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