{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-27019", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-19T14:20:24.209Z", "datePublished": "2024-05-01T05:30:11.319Z", "dateUpdated": "2026-08-05T11:29:02.381Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:29:02.381Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: Fix potential data-race in __nft_obj_type_get()\n\nnft_unregister_obj() can concurrent with __nft_obj_type_get(),\nand there is not any protection when iterate over nf_tables_objects\nlist in __nft_obj_type_get(). Therefore, there is potential data-race\nof nf_tables_objects list entry.\n\nUse list_for_each_entry_rcu() to iterate over nf_tables_objects\nlist in __nft_obj_type_get(), and use rcu_read_lock() in the caller\nnft_obj_type_get() to protect the entire type query process." } ], "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 vulnerable code is reached only through the nfnetlink/nf_tables netlink socket via an NFT_MSG_NEWOBJ batch message, which requires a local process on the system. There is no remote or adjacent-network path into `__nft_obj_type_get()`.\nAC:L - The attacker fully controls the racing reader side and can issue NFT_MSG_NEWOBJ batches in a tight loop with no rate limiting or retry penalty, and can independently drive the list-mutation side through on-demand module autoload (`nft_request_module()` → `nf_tables_module_autoload()`, which drops `commit_mutex` around `request_module()`). Nothing about winning the window depends on state the attacker cannot influence or repeatedly re-attempt.\nPR:L - The only gate is `netlink_net_capable(skb, CAP_NET_ADMIN)`, which is evaluated against the network namespace's owning user namespace, so an ordinary unprivileged user obtains it with `unshare -Urn`. No real root or CAP_SYS_ADMIN in the initial namespace is required to reach the unsynchronized list walk.\nUI:N - The attacker triggers the entire sequence from their own process by sending netlink messages; no victim action, mount, file open, or administrator interaction is needed.\nS:U - The race and its consequences are confined to the kernel's own security authority — this is standard in-kernel memory corruption with no crossing of a VM, IOMMU, or hypervisor boundary.\nC:H - The unprotected traversal can dereference `struct nft_object_type` fields in module memory already released by `free_mod_mem()`, and the stale pointer is propagated into `nft_obj_init()` where `type->maxattr` and `type->policy` steer a `kmalloc_array()` and `nla_parse_nested()`, giving an attacker-influenceable read out of reallocated kernel memory.\nI:H - `try_module_get(type->owner)` performs an atomic increment through a dangling pointer, and `nft_obj_init()` then invokes `type->select_ops()` and `ops->init()` — indirect calls through function pointers read from freed vmalloc'd module memory that can be reoccupied by a later module load or spray, yielding a control-flow hijack primitive.\nA:H - Following a stale list entry or a garbage `type->owner`/`select_ops` pointer produces an oops or panic, and the use-after-free reliably crashes the kernel even when not weaponized further." } ] } ], "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": "e50092404c1bc7aaeb0a0f4077fa6f07b073a20f", "lessThan": "cade34279c2249eafe528564bd2e203e4ff15f88", "status": "affected", "versionType": "git" }, { "version": "e50092404c1bc7aaeb0a0f4077fa6f07b073a20f", "lessThan": "379bf7257bc5f2a1b1ca8514e08a871b7bf6d920", "status": "affected", "versionType": "git" }, { "version": "e50092404c1bc7aaeb0a0f4077fa6f07b073a20f", "lessThan": "df7c0fb8c2b9f9cac65659332581b19682a71349", "status": "affected", "versionType": "git" }, { "version": "e50092404c1bc7aaeb0a0f4077fa6f07b073a20f", "lessThan": "ad333578f736d56920e090d7db1f8dec891d815e", "status": "affected", "versionType": "git" }, { "version": "e50092404c1bc7aaeb0a0f4077fa6f07b073a20f", "lessThan": "4ca946b19caf655a08d5e2266d4d5526025ebb73", "status": "affected", "versionType": "git" }, { "version": "e50092404c1bc7aaeb0a0f4077fa6f07b073a20f", "lessThan": "d78d867dcea69c328db30df665be5be7d0148484", "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": "4.10", "status": "affected" }, { "version": "0", "lessThan": "4.10", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.219", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.157", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.88", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.29", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8.8", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.9", "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": "4.10", "versionEndExcluding": "5.10.219" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "5.15.157" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.1.88" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.6.29" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.8.8" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.9" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/cade34279c2249eafe528564bd2e203e4ff15f88" }, { "url": "https://git.kernel.org/stable/c/379bf7257bc5f2a1b1ca8514e08a871b7bf6d920" }, { "url": "https://git.kernel.org/stable/c/df7c0fb8c2b9f9cac65659332581b19682a71349" }, { "url": "https://git.kernel.org/stable/c/ad333578f736d56920e090d7db1f8dec891d815e" }, { "url": "https://git.kernel.org/stable/c/4ca946b19caf655a08d5e2266d4d5526025ebb73" }, { "url": "https://git.kernel.org/stable/c/d78d867dcea69c328db30df665be5be7d0148484" } ], "title": "netfilter: nf_tables: Fix potential data-race in __nft_obj_type_get()", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2024-06-17T17:40:24.038886Z", "id": "CVE-2024-27019", "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": "2024-06-17T17:46:01.245Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/cade34279c2249eafe528564bd2e203e4ff15f88", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/379bf7257bc5f2a1b1ca8514e08a871b7bf6d920", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/df7c0fb8c2b9f9cac65659332581b19682a71349", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/ad333578f736d56920e090d7db1f8dec891d815e", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/4ca946b19caf655a08d5e2266d4d5526025ebb73", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/d78d867dcea69c328db30df665be5be7d0148484", "tags": [ "x_transferred" ] }, { "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/" }, { "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/" }, { "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-04T17:17:32.430Z" } } ] } }