{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50213","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-06-18T10:57:27.429Z","datePublished":"2025-06-18T11:03:50.958Z","dateUpdated":"2026-08-05T08:57:42.866Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T08:57:42.866Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: do not allow SET_ID to refer to another table\n\nWhen doing lookups for sets on the same batch by using its ID, a set from a\ndifferent table can be used.\n\nThen, when the table is removed, a reference to the set may be kept after\nthe set is freed, leading to a potential use-after-free.\n\nWhen looking for sets by ID, use the table that was used for the lookup by\nname, and only return sets belonging to that same table.\n\nThis fixes CVE-2022-2586, also reported as ZDI-CAN-17470."}],"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 - The bug is reached only through the NETLINK_NETFILTER nftables API (batch NEWSET/NEWSETELEM/DELTABLE), which requires local process access; netfilter/nftables netlink is scored Local per kernel guidance.\nAC:L - The attacker fully controls the netlink batch that creates a cross-table SET_ID reference and deletes the owning table, so the UAF is reliably triggerable with no conditions outside attacker control; public exploits confirm this.\nPR:L - nfnetlink requires CAP_NET_ADMIN via netlink_net_capable(), but that capability is available in an unprivileged user+network namespace (unshare -Urn), so Privileges Required is Low, not High.\nUI:N - Exploitation is entirely attacker-driven through crafted nftables netlink messages; no victim action is required.\nS:U - Impact is standard host kernel privilege escalation within the same OS security authority; it does not cross a VM, IOMMU, or other security boundary, so Scope remains Unchanged.\nC:H - The UAF of nft_object enables controlled reuse and arbitrary kernel reads (including KASLR leaks via obj->key.name), so Confidentiality is High per UAF guidance.\nI:H - Freed nft_object reuse allows hijacking obj->ops->eval for RIP control and arbitrary code execution/LPE (demonstrated publicly), so Integrity is High.\nA:H - The dangling object/set reference causes kernel use-after-free crashes (KASAN/oops) even without full exploitation, so Availability is High."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/nf_tables_api.c"],"versions":[{"version":"958bee14d0718ca7a5002c0f48a099d1d345812a","lessThan":"77d3b5038b7462318f5183e2ad704b01d57215a2","status":"affected","versionType":"git"},{"version":"958bee14d0718ca7a5002c0f48a099d1d345812a","lessThan":"fab2f61cc3b0e441b1749f017cfee75f9bbaded7","status":"affected","versionType":"git"},{"version":"958bee14d0718ca7a5002c0f48a099d1d345812a","lessThan":"1a4b18b1ff11ba26f9a852019d674fde9d1d1cff","status":"affected","versionType":"git"},{"version":"958bee14d0718ca7a5002c0f48a099d1d345812a","lessThan":"faafd9286f1355c76fe9ac3021c280297213330e","status":"affected","versionType":"git"},{"version":"958bee14d0718ca7a5002c0f48a099d1d345812a","lessThan":"f4fa03410f7c5f5bd8f90e9c11e9a8c4b526ff6f","status":"affected","versionType":"git"},{"version":"958bee14d0718ca7a5002c0f48a099d1d345812a","lessThan":"0d07039397527361850c554c192e749cfc879ea9","status":"affected","versionType":"git"},{"version":"958bee14d0718ca7a5002c0f48a099d1d345812a","lessThan":"470ee20e069a6d05ae549f7d0ef2bdbcee6a81b2","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/netfilter/nf_tables_api.c"],"versions":[{"version":"3.16","status":"affected"},{"version":"0","lessThan":"3.16","status":"unaffected","versionType":"semver"},{"version":"4.19.256","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.211","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.137","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.61","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"5.18.18","lessThanOrEqual":"5.18.*","status":"unaffected","versionType":"semver"},{"version":"5.19.2","lessThanOrEqual":"5.19.*","status":"unaffected","versionType":"semver"},{"version":"6.0","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":"3.16","versionEndExcluding":"4.19.256"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"5.4.211"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"5.10.137"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"5.15.61"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"5.18.18"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"5.19.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"6.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/77d3b5038b7462318f5183e2ad704b01d57215a2"},{"url":"https://git.kernel.org/stable/c/fab2f61cc3b0e441b1749f017cfee75f9bbaded7"},{"url":"https://git.kernel.org/stable/c/1a4b18b1ff11ba26f9a852019d674fde9d1d1cff"},{"url":"https://git.kernel.org/stable/c/faafd9286f1355c76fe9ac3021c280297213330e"},{"url":"https://git.kernel.org/stable/c/f4fa03410f7c5f5bd8f90e9c11e9a8c4b526ff6f"},{"url":"https://git.kernel.org/stable/c/0d07039397527361850c554c192e749cfc879ea9"},{"url":"https://git.kernel.org/stable/c/470ee20e069a6d05ae549f7d0ef2bdbcee6a81b2"}],"title":"netfilter: nf_tables: do not allow SET_ID to refer to another table","x_generator":{"engine":"bippy-1.2.0"}}}}