Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: net: openvswitch: fixed the use of flow mask after it was freed upon flow deletion. The commit in the “Fixes” section schedules the freeing of flow-mask via RCU right after it is removed from the flow table. The pointer remain...

Astra Linux – vulnerability in linux-5.10, linux-6.1, linux-5.15

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix possible kfreeskb of ERRPTR After applying the patch in the “Fixes” section, the allocation of the “reply” skb can occur either before or after locking the ovsmutex. However, error cleanup still follows the...

ROS-20261013-73-0453

The vulnerability of the ovsnetdevtunnelDestroy function in the net/openvswitch/vport-netdev.c file, which is part of the Open vSwitch switchboard support for Linux kernels, leads to a mutual locking mechanism. Exploiting this vulnerability could allow an attacker to cause a service failure...

SUSE CVE-2026-97611

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix use-after-free of the flow table mask array tblmaskarrayrealloc retires the old maskarray before it stops being reachable: old = ovsldereferencetbl-maskarray; if old ... callrcu&old-rcu, maskarrayrcucb;...

ROS-20260925-73-0052

The vulnerability of the ovsnetdevtunnelDestroy function in the net/openvswitch/vport-netdev.c file, which is part of the Open vSwitch router support in the Linux operating system, is related to the lack of protection for sensitive data. Exploiting this vulnerability could allow an attacker to...

CVE-2026-97611: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix use-after-free of the flow table mask array tblmaskarrayrealloc retires the old maskarray before it stops being reachable: old = ovsldereferencetbl-maskarray; if old ... callrcu&old-rcu, maskarrayrcucb;...

CVE-2026-97611: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix use-after-free of the flow table mask array tblmaskarrayrealloc retires the old maskarray before it stops being reachable: old = ovsldereferencetbl-maskarray; if old ... callrcu&old-rcu, maskarrayrcucb;...

PT-2026-98551

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free issue exists in the OpenvSwitch component of the Linux kernel. The tbl mask array realloc function retires the old mask array before it is no longer reachable. Because...

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: Undefined Security Weakness

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: Undefined Security Weakness

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-2026-74701 net/openvswitch: check Ethernet header length in key_extract()

In the Linux kernel, the following vulnerability has been resolved: net/openvswitch: check Ethernet header length in keyextract When a packet arrives on an ARPHRDNONE device e.g. TUN, ovsflowkeyextract trusts the user-provided skb-protocol field: if it is ETHPTEB, the packet is classified as...

CVE-2026-74664: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reallocate update replies for mismatched IDs ovsflowcmdnew preallocates the optional reply skb before it takes ovsmutex and before it knows which existing flow will be updated. That is normally fine because the...

CVE-2026-74701: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net/openvswitch: check Ethernet header length in keyextract When a packet arrives on an ARPHRDNONE device e.g. TUN, ovsflowkeyextract trusts the user-provided skb-protocol field: if it is ETHPTEB, the packet is classified as...

CVE-2026-74701: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net/openvswitch: check Ethernet header length in keyextract When a packet arrives on an ARPHRDNONE device e.g. TUN, ovsflowkeyextract trusts the user-provided skb-protocol field: if it is ETHPTEB, the packet is classified as...

CVE-2026-74664: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reallocate update replies for mismatched IDs ovsflowcmdnew preallocates the optional reply skb before it takes ovsmutex and before it knows which existing flow will be updated. That is normally fine because the...

CVE-2026-74701: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net/openvswitch: check Ethernet header length in keyextract When a packet arrives on an ARPHRDNONE device e.g. TUN, ovsflowkeyextract trusts the user-provided skb-protocol field: if it is ETHPTEB, the packet is classified as...

CVE-2026-74465 net: openvswitch: fix potential UAF on meter attach failure

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 attachmeter function makes the new meter visible to other CPUs but can still fail afterwards. On failure, it detaches the meter bac...

CVE-2026-74464: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix skb leak on flow key update failure during ct ovsctexecute always steals or frees the skb on failure while ovsflowkeyupdate does not. So, if it fails and we return right away, the skb ends up leaked. Fix tha...

CVE-2026-74465: Undefined Security Weakness

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 attachmeter function makes the new meter visible to other CPUs but can still fail afterwards. On failure, it detaches the meter bac...