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CVE-2022-49183
net/sched: act_ct: fix ref leak when switching zones
Medium5.5EPSS 0.27%
- Published
- Updated
- Reserved
- Assigned by
- Linux
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().
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.27% · top 81% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
- CWE-noinfo Not enough information
Affected products
- affected 0fc1847359964e95e521cf2bb2b10f8e33dd0970 – < 9222a08be539cbb7a8e0d46cbc7ab9e4db273eb8
- affected a95ea90deb3071c1ded77a05e91cfebc5238d908 – < bcbf4e5c3b5b373cd61528392dd1ec8e9c0fd33d
- affected e9408de00e5ecd0dbe91cf061c7da23711c4febb – < 4bb42d73def9411e5cad885b9811987d72431df1
- affected 2f131de361f6d0eaff17db26efdb844c178432f8 – < b24793a37d91aacad7cb9893b226a7924a89636a
- affected 2f131de361f6d0eaff17db26efdb844c178432f8 – < bcb74e132a76ce0502bb33d5b65533a4ed72d159
- affected 5.10.103 – < 5.10.258
- affected 5.15.26 – < 5.15.33
- affected 5.16.12 – < 5.16.19
- affected 5.17
- unaffected < 5.17
- unaffected 5.10.258 – ≤ 5.10.*
- unaffected 5.15.33 – ≤ 5.15.*
- unaffected 5.16.19 – ≤ 5.16.*
- unaffected 5.17.2 – ≤ 5.17.*
- unaffected 5.18 – ≤ *
References (5)
- https://git.kernel.org/stable/c/9222a08be539cbb7a8e0d46cbc7ab9e4db273eb8 (opens in a new tab)
- https://git.kernel.org/stable/c/bcbf4e5c3b5b373cd61528392dd1ec8e9c0fd33d (opens in a new tab)
- https://git.kernel.org/stable/c/4bb42d73def9411e5cad885b9811987d72431df1 (opens in a new tab)
- https://git.kernel.org/stable/c/b24793a37d91aacad7cb9893b226a7924a89636a (opens in a new tab)
- https://git.kernel.org/stable/c/bcb74e132a76ce0502bb33d5b65533a4ed72d159 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2022-49183)Record last updated .