MediumFix available
net/sched: act_ct: fix ref leak when switching zones
Type: advisorySources: OSV
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().
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.258, 5.15.33, 5.16.19, 5.17.2
- CVEs
- CVE-2022-49183
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 21:38 UTC · Revision 1
Source evidence
net/sched: act_ct: fix ref leak when switching zones
core-osv · Original sourcePublished 26 Feb 2025, 01:55 UTC
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().
osv:CVE-2022-49183
Kernel
Fixed versions: 5.10.258, 5.15.33, 5.16.19, 5.17.2
Complete source record
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