{"id":"CVE-2023-52927","revision":null,"records":[{"revision":"0d94670212dd44c9bf5529c9cb0c8c3e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2023-52927","aliases":[],"title":"netfilter: allow exp not to be removed in nf_ct_find_expectation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: allow exp not to be removed in nf_ct_find_expectation\n\nCurrently nf_conntrack_in() calling nf_ct_find_expectation() will\nremove the exp from the hash table. However, in some scenario, we\nexpect the exp not to be removed when the created ct will not be\nconfirmed, like in OVS and TC conntrack in the following patches.\n\nThis patch allows exp not to be removed by setting IPS_CONFIRMED\nin the status of the tmpl.","state":0,"publishedAt":"2025-03-14T14:25:59.166+00:00","modifiedAt":"2026-10-15T00:17:11.022+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"include/net/netfilter/nf_conntrack_expect.h\",\n                        \"net/netfilter/nf_conntrack_core.c\",\n                        \"net/netfilter/nf_conntrack_expect.c\",\n                        \"net/netfilter/nft_ct.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"1bc91a5ddf3eaea0e0ea957cccf3abdcfcace00e\",\n                            \"lessThan\": \"3fa58a6fbd1e9e5682d09cdafb08fba004cb12ec\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1bc91a5ddf3eaea0e0ea957cccf3abdcfcace00e\",\n                            \"lessThan\": \"4914109a8e1e494c6aa9852f9e84ec77a5fc643f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"include/net/netfilter/nf_conntrack_expect.h\",\n                        \"net/netfilter/nf_conntrack_core.c\",\n                        \"net/netfilter/nf_conntrack_expect.c\",\n                        \"net/netfilter/nft_ct.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.18\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.18\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.130\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/3fa58a6fbd1e9e5682d09cdafb08fba004cb12ec","https://git.kernel.org/stable/c/4914109a8e1e494c6aa9852f9e84ec77a5fc643f","https://seadragnol.github.io/posts/CVE-2023-52927/"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-52927","license":"CVE Program Terms of Use","key":"cve-program:CVE-2023-52927","identifiers":["CVE-2023-52927"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-09T22:04:21.7510311+00:00","complete":true,"records":1773,"lastAttemptAt":"2026-11-09T22:04:21.7510311+00:00","lastSuccessAt":"2026-11-09T22:04:21.9174281+00:00","error":null,"lastVerifiedAt":"2026-11-09T22:04:21.9174285+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-24e6fde7b744113daefb8f6135035fb8a5c69c9617c9c0d40574a0376532ffd3-496c6c80845a4235d695039f4a651d70f3b55bc53fc01f5ca259c734136db852","complete":true,"records":421688,"lastAttemptAt":"2026-11-09T22:02:15.6116354+00:00","lastSuccessAt":"2026-11-09T22:02:15.4777453+00:00","error":null,"lastVerifiedAt":"2026-11-09T22:02:15.6116354+00:00","snapshotPublishedAt":"2026-11-09T21:30:28+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-21282c4cc5c44a368f0a6c9b74b3c7ec","complete":false,"records":13672,"lastAttemptAt":"2026-11-09T22:13:28.1220201+00:00","lastSuccessAt":"2026-11-09T22:13:28.1993068+00:00","error":null,"lastVerifiedAt":"2026-11-09T22:13:28.1993068+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-09T22:04:21.7510311+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T22:04:21.7510311+00:00","lastSuccessAt":"2026-11-09T22:04:21.9181937+00:00","error":null,"lastVerifiedAt":"2026-11-09T22:04:21.9181977+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-8b527f7960454708a3fcfe8f37f191e9","complete":false,"records":13680,"lastAttemptAt":"2026-11-09T22:04:47.0464678+00:00","lastSuccessAt":"2026-11-09T22:04:47.043+00:00","error":null,"lastVerifiedAt":"2026-11-09T22:04:47.043+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13704,"expectedIdentifiers":13725,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-422f1ff5212ec8e62457b7c5d867c0d7ff5bdd57ee4fe937d3d7712d35f862bb","complete":true,"records":9919,"lastAttemptAt":"2026-11-09T22:04:21.6095423+00:00","lastSuccessAt":"2026-11-09T22:04:21.3703177+00:00","error":null,"lastVerifiedAt":"2026-11-09T22:04:21.6095423+00:00","snapshotPublishedAt":"2026-11-09T22:03:02+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-26503967ae4379db8f374089589d6e03fb15bd31f820c9e992aaf93840c2236c","complete":true,"records":1971,"lastAttemptAt":"2026-11-09T22:02:15.7662034+00:00","lastSuccessAt":"2026-11-09T21:02:20.472473+00:00","error":null,"lastVerifiedAt":"2026-11-09T22:02:15.7662034+00:00","snapshotPublishedAt":"2026-11-09T20:18:18+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-761ecc9061239b0da572dc9254c6f384c1d19339eb08408c436647a2f26129e9","complete":true,"records":3064,"lastAttemptAt":"2026-11-09T22:04:21.7141844+00:00","lastSuccessAt":"2026-11-09T17:05:03.4044794+00:00","error":null,"lastVerifiedAt":"2026-11-09T22:04:21.7141844+00:00","snapshotPublishedAt":"2026-11-09T16:33:20+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-cefd5e58c60b69931053d90de4b49991fc540e6131b53c29cfa39467d9128b3a","complete":true,"records":231328,"lastAttemptAt":"2026-11-09T22:04:12.3749697+00:00","lastSuccessAt":"2026-11-09T22:04:10.8762138+00:00","error":null,"lastVerifiedAt":"2026-11-09T22:04:12.3749697+00:00","snapshotPublishedAt":"2026-11-09T21:48:24+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}