CVEvulnerability
CVE-2022-49183
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2025-02-26
- Last modified
- 2026-06-17
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Description
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().
Affected configurations
• linux linux kernel (>= 5.10.103 < 5.11)
• linux linux kernel (>= 5.15.26 < 5.15.33)
• linux linux kernel (>= 5.16.12 <= 5.16.19)
• linux linux kernel (>= 5.17 <= 5.17.2)
References
- https://git.kernel.org/stable/c/4bb42d73def9411e5cad885b9811987d72431df1 Patch
- https://git.kernel.org/stable/c/9222a08be539cbb7a8e0d46cbc7ab9e4db273eb8 git.kernel.org
- https://git.kernel.org/stable/c/b24793a37d91aacad7cb9893b226a7924a89636a Patch
- https://git.kernel.org/stable/c/bcb74e132a76ce0502bb33d5b65533a4ed72d159 Patch
- https://git.kernel.org/stable/c/bcbf4e5c3b5b373cd61528392dd1ec8e9c0fd33d Patch