{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-52970", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.375Z", "datePublished": "2026-06-24T16:28:48.882Z", "dateUpdated": "2026-06-24T16:28:48.882Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-24T16:28:48.882Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_ct: fix missing expect put in obj eval\n\nnft_ct_expect_obj_eval() allocates an expectation and may call\nnf_ct_expect_related(), but never drops its local reference.\n\nAdd nf_ct_expect_put(exp) before return to balance allocation."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/netfilter/nft_ct.c"], "versions": [{"version": "857b46027d6f91150797295752581b7155b9d0e1", "lessThan": "cdb9a25dd3416d427e8b2753210f8baf44207577", "status": "affected", "versionType": "git"}, {"version": "857b46027d6f91150797295752581b7155b9d0e1", "lessThan": "26ab32ec73941871c97562ee1f39587950dc3b68", "status": "affected", "versionType": "git"}, {"version": "857b46027d6f91150797295752581b7155b9d0e1", "lessThan": "7b96242ceedfe249f158419f3254bcee04173ffe", "status": "affected", "versionType": "git"}, {"version": "857b46027d6f91150797295752581b7155b9d0e1", "lessThan": "ecca618e1e339494911090474ed87742c0f73976", "status": "affected", "versionType": "git"}, {"version": "857b46027d6f91150797295752581b7155b9d0e1", "lessThan": "2aef1b13d5c0285f340512c6c07eb858fd018fd8", "status": "affected", "versionType": "git"}, {"version": "857b46027d6f91150797295752581b7155b9d0e1", "lessThan": 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"status": "unaffected", "versionType": "semver"}, {"version": "6.6.141", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.91", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.33", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.10", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "5.10.258"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "5.15.209"}, {"vulnerable": true, "criteria": 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"https://git.kernel.org/stable/c/26ab32ec73941871c97562ee1f39587950dc3b68"}, {"url": "https://git.kernel.org/stable/c/7b96242ceedfe249f158419f3254bcee04173ffe"}, {"url": "https://git.kernel.org/stable/c/ecca618e1e339494911090474ed87742c0f73976"}, {"url": "https://git.kernel.org/stable/c/2aef1b13d5c0285f340512c6c07eb858fd018fd8"}, {"url": "https://git.kernel.org/stable/c/1dced0725e2fae3ac3416274db20a7ff5a46931d"}, {"url": "https://git.kernel.org/stable/c/84c422cea5a45fe56be839f25880f21fd33940cd"}, {"url": "https://git.kernel.org/stable/c/19f94b6fee75b3ef7fbc06f3745b9a771a8a19a4"}], "title": "netfilter: nft_ct: fix missing expect put in obj eval", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"bugzilla": {"description": "kernel: netfilter: nft_ct: fix missing expect put in obj eval", "id": "2492430", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492430"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnetfilter: nft_ct: fix missing expect put in obj eval\nnft_ct_expect_obj_eval() allocates an expectation and may call\nnf_ct_expect_related(), but never drops its local reference.\nAdd nf_ct_expect_put(exp) before return to balance allocation.", "A flaw was found in the `netfilter: nft_ct` component of the Linux kernel. The `nft_ct_expect_obj_eval()` function allocates an expectation but fails to release its local reference. This oversight leads to a resource leak, which could potentially allow a local attacker to cause a denial of service by exhausting system resources."], "name": "CVE-2026-52970", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-52970\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-52970\nhttps://lore.kernel.org/linux-cve-announce/2026062439-CVE-2026-52970-8bc3@gregkh/T"], "threat_severity": "Moderate"}