{"id":"CVE-2026-52970","title":"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 …","summary":"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 …","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 5.3, < 5.10.258","linux_kernel >= 5.11, < 5.15.209","linux_kernel >= 5.16, < 6.1.175","linux_kernel >= 6.2, < 6.6.141","linux_kernel >= 6.7, < 6.12.91","linux_kernel >= 6.13, < 6.18.33","linux_kernel >= 6.19, < 7.0.10","linux_kernel = 7.1"],"patched":["linux_kernel 7.0.10"],"published":"2026-06-24","updated":"2026-09-08","sourceUpdated":"2026-09-08T09:18:12.460","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-52970","references":[{"url":"https://git.kernel.org/stable/c/19f94b6fee75b3ef7fbc06f3745b9a771a8a19a4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1dced0725e2fae3ac3416274db20a7ff5a46931d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/26ab32ec73941871c97562ee1f39587950dc3b68","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2aef1b13d5c0285f340512c6c07eb858fd018fd8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7b96242ceedfe249f158419f3254bcee04173ffe","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/84c422cea5a45fe56be839f25880f21fd33940cd","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cdb9a25dd3416d427e8b2753210f8baf44207577","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ecca618e1e339494911090474ed87742c0f73976","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-019113.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00131,"epssPercentile":0.03071,"ingestedAt":"2026-07-11T13:13:25.085Z","slug":"CVE-2026-52970","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `linux_kernel >= 5.3, < 5.10.258`\n- `linux_kernel >= 5.11, < 5.15.209`\n- `linux_kernel >= 5.16, < 6.1.175`\n- `linux_kernel >= 6.2, < 6.6.141`\n- `linux_kernel >= 6.7, < 6.12.91`\n- `linux_kernel >= 6.13, < 6.18.33`\n- `linux_kernel >= 6.19, < 7.0.10`\n- `linux_kernel = 7.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 7.0.10`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":5311,"id":"CVE-2026-52970","ts":1788887264467,"field":"cvss","old":null,"new":"5.5"},{"seq":5310,"id":"CVE-2026-52970","ts":1788887264467,"field":"severity","old":"none","new":"medium"},{"seq":4194,"id":"CVE-2026-52970","ts":1788886379244,"field":"cvss","old":"5.5","new":null},{"seq":4193,"id":"CVE-2026-52970","ts":1788886379244,"field":"severity","old":"medium","new":"none"},{"seq":2955,"id":"CVE-2026-52970","ts":1788883044397,"field":"cvss","old":null,"new":"5.5"},{"seq":2954,"id":"CVE-2026-52970","ts":1788883044397,"field":"severity","old":"none","new":"medium"},{"seq":1984,"id":"CVE-2026-52970","ts":1788882448585,"field":"cvss","old":"5.5","new":null},{"seq":1983,"id":"CVE-2026-52970","ts":1788882448585,"field":"severity","old":"medium","new":"none"},{"seq":253,"id":"CVE-2026-52970","ts":1788881642863,"field":"cvss","old":null,"new":"5.5"},{"seq":252,"id":"CVE-2026-52970","ts":1788881642863,"field":"severity","old":"none","new":"medium"}]}