net/sched: act_ct: fix ref leak when switching zones (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.27 % · percentile 19 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
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().
References
- https://git.kernel.org/stable/c/9222a08be539cbb7a8e0d46cbc7ab9e4db273eb8
- https://git.kernel.org/stable/c/bcbf4e5c3b5b373cd61528392dd1ec8e9c0fd33d
- https://git.kernel.org/stable/c/4bb42d73def9411e5cad885b9811987d72431df1
- https://git.kernel.org/stable/c/b24793a37d91aacad7cb9893b226a7924a89636a
- https://git.kernel.org/stable/c/bcb74e132a76ce0502bb33d5b65533a4ed72d159
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | CISA-ADP |
| CVSS 3.1 | MEDIUM 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 3.1 | MEDIUM 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
European references
- ENISA EUVD · EUVD-2022-55043
- GCVE · GCVE-0-2022-49183
CERT-FR advisories
- CERTFR-2026-AVI-0862 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0336 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0307 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.10.103 < 5.11cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.15.26 < 5.15.33cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.16.12 ≤ 5.16.19cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.17 ≤ 5.17.2
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 0fc1847359964e95e521cf2bb2b10f8e33dd0970 < 9222a08be539cbb7a8e0d46cbc7ab9e4db273eb8 ; affected a95ea90deb3071c1ded77a05e91cfebc5238d908 < bcbf4e5c3b5b373cd61528392dd1ec8e9c0fd33d ; affected e9408de00e5ecd0dbe91cf061c7da23711c4febb < 4bb42d73def9411e5cad885b9811987d72431df1 ; affected 2f131de361f6d0eaff17db26efdb844c178432f8 < b24793a37d91aacad7cb9893b226a7924a89636a ; affected 2f131de361f6d0eaff17db26efdb844c178432f8 < bcb74e132a76ce0502bb33d5b65533a4ed72d159 ; affected 5.10.103 < 5.10.258 |
| Linux · Linux | affected 5.17 ; unaffected 0 < 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.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |