{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2022-49183", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T01:49:39.283Z", "datePublished": "2025-02-26T01:55:34.041Z", "dateUpdated": "2025-02-26T01:55:34.041Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-02-26T01:55:34.041Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_ct: fix ref leak when switching zones\n\nWhen switching zones or network namespaces without doing a ct clear in\nbetween, it is now leaking a reference to the old ct entry. That's\nbecause tcf_ct_skb_nfct_cached() returns false and\ntcf_ct_flow_table_lookup() may simply overwrite it.\n\nThe fix is to, as the ct entry is not reusable, free it already at\ntcf_ct_skb_nfct_cached()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/sched/act_ct.c"], "versions": [{"version": "a95ea90deb3071c1ded77a05e91cfebc5238d908", "lessThan": "bcbf4e5c3b5b373cd61528392dd1ec8e9c0fd33d", "status": "affected", "versionType": "git"}, {"version": "e9408de00e5ecd0dbe91cf061c7da23711c4febb", "lessThan": "4bb42d73def9411e5cad885b9811987d72431df1", "status": "affected", "versionType": "git"}, {"version": "2f131de361f6d0eaff17db26efdb844c178432f8", "lessThan": "b24793a37d91aacad7cb9893b226a7924a89636a", "status": "affected", "versionType": "git"}, {"version": "2f131de361f6d0eaff17db26efdb844c178432f8", "lessThan": "bcb74e132a76ce0502bb33d5b65533a4ed72d159", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/sched/act_ct.c"], "versions": [{"version": "5.17", "status": "affected"}, {"version": "0", "lessThan": "5.17", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.33", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.16.19", "lessThanOrEqual": "5.16.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.17.2", "lessThanOrEqual": "5.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.18", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/bcbf4e5c3b5b373cd61528392dd1ec8e9c0fd33d"}, {"url": "https://git.kernel.org/stable/c/4bb42d73def9411e5cad885b9811987d72431df1"}, {"url": "https://git.kernel.org/stable/c/b24793a37d91aacad7cb9893b226a7924a89636a"}, {"url": "https://git.kernel.org/stable/c/bcb74e132a76ce0502bb33d5b65533a4ed72d159"}], "title": "net/sched: act_ct: fix ref leak when switching zones", "x_generator": {"engine": "bippy-5f407fcff5a0"}}}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C6C1F51A-A817-4CF1-9578-38216E3CF649", "versionEndExcluding": "5.11", "versionStartIncluding": "5.10.103", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "806417E1-B697-4476-94C3-EBC38748D945", "versionEndExcluding": "5.15.33", "versionStartIncluding": "5.15.26", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "108A78FE-B91E-44D1-8EBD-D9C4D8A649EC", "versionEndIncluding": "5.16.19", "versionStartIncluding": "5.16.12", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FD8C9932-9223-472D-A70C-42BCD470680A", "versionEndIncluding": "5.17.2", "versionStartIncluding": "5.17", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_ct: fix ref leak when switching zones\n\nWhen switching zones or network namespaces without doing a ct clear in\nbetween, it is now leaking a reference to the old ct entry. That's\nbecause tcf_ct_skb_nfct_cached() returns false and\ntcf_ct_flow_table_lookup() may simply overwrite it.\n\nThe fix is to, as the ct entry is not reusable, free it already at\ntcf_ct_skb_nfct_cached()."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/sched: act_ct: se corrige la fuga de referencia al cambiar de zona Al cambiar de zona o de espacio de nombres de red sin hacer una limpieza de ct en el medio, ahora se filtra una referencia a la entrada ct anterior. Esto se debe a que tcf_ct_skb_nfct_cached() devuelve falso y tcf_ct_flow_table_lookup() puede simplemente sobrescribirlo. La soluci\u00f3n es, como la entrada ct no es reutilizable, liberarla ya en tcf_ct_skb_nfct_cached()."}], "id": "CVE-2022-49183", "lastModified": "2025-03-17T18:56:17.093", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-02-26T07:00:55.427", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4bb42d73def9411e5cad885b9811987d72431df1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b24793a37d91aacad7cb9893b226a7924a89636a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bcb74e132a76ce0502bb33d5b65533a4ed72d159"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bcbf4e5c3b5b373cd61528392dd1ec8e9c0fd33d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: net/sched: act_ct: fix ref leak when switching zones", "id": "2347743", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2347743"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-401", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet/sched: act_ct: fix ref leak when switching zones\nWhen switching zones or network namespaces without doing a ct clear in\nbetween, it is now leaking a reference to the old ct entry. That's\nbecause tcf_ct_skb_nfct_cached() returns false and\ntcf_ct_flow_table_lookup() may simply overwrite it.\nThe fix is to, as the ct entry is not reusable, free it already at\ntcf_ct_skb_nfct_cached()."], "name": "CVE-2022-49183", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49183\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49183\nhttps://lore.kernel.org/linux-cve-announce/2025022614-CVE-2022-49183-1962@gregkh/T"], "threat_severity": "Moderate"}