{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-52433","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-02-20T12:30:33.290Z","datePublished":"2024-02-20T12:52:56.753Z","dateUpdated":"2026-08-05T09:09:52.352Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T09:09:52.352Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_set_rbtree: skip sync GC for new elements in this transaction\n\nNew elements in this transaction might expired before such transaction\nends. Skip sync GC for such elements otherwise commit path might walk\nover an already released object. Once transaction is finished, async GC\nwill collect such expired element."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - Triggerable only via nfnetlink/nftables control-plane netlink (nf_tables_newsetelem → nft_rbtree_insert), which requires local process access; not reachable from network packet processing.\nAC:L - The attacker fully controls set timeouts/expirations and the batch transaction that inserts overlapping elements, so sync GC of a still-pending element can be induced reliably without depending on external conditions.\nPR:L - nfnetlink gates on netlink_net_capable(CAP_NET_ADMIN), which an unprivileged user obtains in a user+net namespace (unshare -Urn); this is not real init-namespace root.\nUI:N - The attacker issues the nftables netlink batch themselves; no victim action is required.\nS:U - Impact is privilege escalation within the same kernel/host authority (standard local kernel UAF), not a VM/IOMMU/sandbox boundary cross.\nC:H - Sync GC call_rcu-frees an element still referenced on the commit/abort list, yielding a classic heap UAF that can be leveraged for arbitrary kernel memory read.\nI:H - The same UAF/double-free (especially abort’s synchronize_rcu then nft_set_elem_destroy of an already-freed object) enables heap corruption and control-flow hijacking primitives.\nA:H - Use-after-free or double-free of nft_rbtree_elem during commit/abort causes kernel oops/panic even when not fully exploited for code execution."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/nft_set_rbtree.c"],"versions":[{"version":"cb4d00b563675ba8ff6ef94b077f58d816f68ba3","lessThan":"9db9feb841f7449772f9393c16b9ef4536d8c127","status":"affected","versionType":"git"},{"version":"c357648929c8dff891502349769aafb8f0452bc2","lessThan":"03caf75da1059f0460666c826e9f50e13dfd0017","status":"affected","versionType":"git"},{"version":"146c76866795553dbc19998f36718d7986ad302b","lessThan":"c323ed65f66e5387ee0a73452118d49f1dae81b8","status":"affected","versionType":"git"},{"version":"479a2cf5259347d6a1f658b0f791d27a34908e91","lessThan":"9af7dfb3c9d7985172a240f85e684c5cd33e29ce","status":"affected","versionType":"git"},{"version":"df650d6a4bf47248261b61ef6b174d7c54034d15","lessThan":"9a8c544158f68f656d1734eb5ba00c4f817b76b1","status":"affected","versionType":"git"},{"version":"f6c383b8c31a93752a52697f8430a71dcbc46adf","lessThan":"e3213ff99a355cda811b41e8dbb3472d13167a3a","status":"affected","versionType":"git"},{"version":"f6c383b8c31a93752a52697f8430a71dcbc46adf","lessThan":"2ee52ae94baabf7ee09cf2a8d854b990dac5d0e4","status":"affected","versionType":"git"},{"version":"e4d71d6a9c7db93f7bf20c3a0f0659d63d7de681","status":"affected","versionType":"git"},{"version":"6.4.11","lessThan":"6.5","status":"affected","versionType":"semver"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/nft_set_rbtree.c"],"versions":[{"version":"6.5","status":"affected"},{"version":"0","lessThan":"6.5","status":"unaffected","versionType":"semver"},{"version":"6.5.4","lessThanOrEqual":"6.5.*","status":"unaffected","versionType":"semver"},{"version":"6.6","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":"6.5","versionEndExcluding":"6.5.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4.11"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/9db9feb841f7449772f9393c16b9ef4536d8c127"},{"url":"https://git.kernel.org/stable/c/03caf75da1059f0460666c826e9f50e13dfd0017"},{"url":"https://git.kernel.org/stable/c/c323ed65f66e5387ee0a73452118d49f1dae81b8"},{"url":"https://git.kernel.org/stable/c/9af7dfb3c9d7985172a240f85e684c5cd33e29ce"},{"url":"https://git.kernel.org/stable/c/9a8c544158f68f656d1734eb5ba00c4f817b76b1"},{"url":"https://git.kernel.org/stable/c/e3213ff99a355cda811b41e8dbb3472d13167a3a"},{"url":"https://git.kernel.org/stable/c/2ee52ae94baabf7ee09cf2a8d854b990dac5d0e4"}],"title":"netfilter: nft_set_rbtree: skip sync GC for new elements in this transaction","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-273","lang":"en","description":"CWE-273 Improper Check for Dropped Privileges"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":4.4,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"HIGH","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-10-01T19:12:40.632777Z","id":"CVE-2023-52433","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-10-01T19:12:53.363Z"}},{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/9db9feb841f7449772f9393c16b9ef4536d8c127","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/03caf75da1059f0460666c826e9f50e13dfd0017","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/c323ed65f66e5387ee0a73452118d49f1dae81b8","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/9af7dfb3c9d7985172a240f85e684c5cd33e29ce","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/9a8c544158f68f656d1734eb5ba00c4f817b76b1","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/e3213ff99a355cda811b41e8dbb3472d13167a3a","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/2ee52ae94baabf7ee09cf2a8d854b990dac5d0e4","tags":["x_transferred"]},{"url":"https://security.netapp.com/advisory/ntap-20240828-0003/"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-28T15:02:46.362Z"}}]}}