In the Linux kernel, the following vulnerability has been resolved:
net/sched: act_ct: fix ref leak when switching zones
When switching zones or network namespaces without doing a ct clear in between, it is now leaking a reference to the old ct entry. That's because tcf_ct_skb_nfct_cached() returns false and tcf_ct_flow_table_lookup() may simply overwrite it.
The fix is to, as the ct entry is not reusable, free it already at tcf_ct_skb_nfct_cached().
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Feb 26, 2025 |
| Ubuntu | — | Upgrade linux-intel-iotgUpgrade linux-azureUpgrade linux-oracleUpgrade linux-raspiUpgrade linux-hwe-5.15Upgrade linux-realtimeUpgrade linux-kvmUpgrade linux-azure-5.15Upgrade linux-ibmUpgrade linux-gcpUpgrade linux-awsUpgrade linux-lowlatency-hwe-5.15Upgrade linux-bluefieldUpgrade linux-lowlatencyUpgrade linux-gkeUpgrade linux | Mar 19, 2025 | Feb 26, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jun 8, 2026 | Feb 26, 2025 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub