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vuln-cve/data/2024/35xxx/CVE-2024-35899.json
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{
"dataType": "CVE_RECORD",
"cveMetadata": {
"cveId": "CVE-2024-35899",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2024-05-17T13:50:33.114Z",
"datePublished": "2024-05-19T08:34:53.267Z",
"dateUpdated": "2026-10-15T00:41:17.807Z"
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"containers": {
"cna": {
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"dateUpdated": "2026-08-05T11:30:50.915Z"
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: flush pending destroy work before exit_net release\n\nSimilar to 2c9f0293280e (\"netfilter: nf_tables: flush pending destroy\nwork before netlink notifier\") to address a race between exit_net and\nthe destroy workqueue.\n\nThe trace below shows an element to be released via destroy workqueue\nwhile exit_net path (triggered via module removal) has already released\nthe set that is used in such transaction.\n\n[ 1360.547789] BUG: KASAN: slab-use-after-free in nf_tables_trans_destroy_work+0x3f5/0x590 [nf_tables]\n[ 1360.547861] Read of size 8 at addr ffff888140500cc0 by task kworker/4:1/152465\n[ 1360.547870] CPU: 4 PID: 152465 Comm: kworker/4:1 Not tainted 6.8.0+ #359\n[ 1360.547882] Workqueue: events nf_tables_trans_destroy_work [nf_tables]\n[ 1360.547984] Call Trace:\n[ 1360.547991] <TASK>\n[ 1360.547998] dump_stack_lvl+0x53/0x70\n[ 1360.548014] print_report+0xc4/0x610\n[ 1360.548026] ? __virt_addr_valid+0xba/0x160\n[ 1360.548040] ? __pfx__raw_spin_lock_irqsave+0x10/0x10\n[ 1360.548054] ? nf_tables_trans_destroy_work+0x3f5/0x590 [nf_tables]\n[ 1360.548176] kasan_report+0xae/0xe0\n[ 1360.548189] ? nf_tables_trans_destroy_work+0x3f5/0x590 [nf_tables]\n[ 1360.548312] nf_tables_trans_destroy_work+0x3f5/0x590 [nf_tables]\n[ 1360.548447] ? __pfx_nf_tables_trans_destroy_work+0x10/0x10 [nf_tables]\n[ 1360.548577] ? _raw_spin_unlock_irq+0x18/0x30\n[ 1360.548591] process_one_work+0x2f1/0x670\n[ 1360.548610] worker_thread+0x4d3/0x760\n[ 1360.548627] ? __pfx_worker_thread+0x10/0x10\n[ 1360.548640] kthread+0x16b/0x1b0\n[ 1360.548653] ? __pfx_kthread+0x10/0x10\n[ 1360.548665] ret_from_fork+0x2f/0x50\n[ 1360.548679] ? __pfx_kthread+0x10/0x10\n[ 1360.548690] ret_from_fork_asm+0x1a/0x30\n[ 1360.548707] </TASK>\n\n[ 1360.548719] Allocated by task 192061:\n[ 1360.548726] kasan_save_stack+0x20/0x40\n[ 1360.548739] kasan_save_track+0x14/0x30\n[ 1360.548750] __kasan_kmalloc+0x8f/0xa0\n[ 1360.548760] __kmalloc_node+0x1f1/0x450\n[ 1360.548771] nf_tables_newset+0x10c7/0x1b50 [nf_tables]\n[ 1360.548883] nfnetlink_rcv_batch+0xbc4/0xdc0 [nfnetlink]\n[ 1360.548909] nfnetlink_rcv+0x1a8/0x1e0 [nfnetlink]\n[ 1360.548927] netlink_unicast+0x367/0x4f0\n[ 1360.548935] netlink_sendmsg+0x34b/0x610\n[ 1360.548944] ____sys_sendmsg+0x4d4/0x510\n[ 1360.548953] ___sys_sendmsg+0xc9/0x120\n[ 1360.548961] __sys_sendmsg+0xbe/0x140\n[ 1360.548971] do_syscall_64+0x55/0x120\n[ 1360.548982] entry_SYSCALL_64_after_hwframe+0x55/0x5d\n\n[ 1360.548994] Freed by task 192222:\n[ 1360.548999] kasan_save_stack+0x20/0x40\n[ 1360.549009] kasan_save_track+0x14/0x30\n[ 1360.549019] kasan_save_free_info+0x3b/0x60\n[ 1360.549028] poison_slab_object+0x100/0x180\n[ 1360.549036] __kasan_slab_free+0x14/0x30\n[ 1360.549042] kfree+0xb6/0x260\n[ 1360.549049] __nft_release_table+0x473/0x6a0 [nf_tables]\n[ 1360.549131] nf_tables_exit_net+0x170/0x240 [nf_tables]\n[ 1360.549221] ops_exit_list+0x50/0xa0\n[ 1360.549229] free_exit_list+0x101/0x140\n[ 1360.549236] unregister_pernet_operations+0x107/0x160\n[ 1360.549245] unregister_pernet_subsys+0x1c/0x30\n[ 1360.549254] nf_tables_module_exit+0x43/0x80 [nf_tables]\n[ 1360.549345] __do_sys_delete_module+0x253/0x370\n[ 1360.549352] do_syscall_64+0x55/0x120\n[ 1360.549360] entry_SYSCALL_64_after_hwframe+0x55/0x5d\n\n(gdb) list *__nft_release_table+0x473\n0x1e033 is in __nft_release_table (net/netfilter/nf_tables_api.c:11354).\n11349 list_for_each_entry_safe(flowtable, nf, &table->flowtables, list) {\n11350 list_del(&flowtable->list);\n11351 nft_use_dec(&table->use);\n11352 nf_tables_flowtable_destroy(flowtable);\n11353 }\n11354 list_for_each_entry_safe(set, ns, &table->sets, list) {\n11355 list_del(&set->list);\n11356 nft_use_dec(&table->use);\n11357 if (set->flags & (NFT_SET_MAP | NFT_SET_OBJECT))\n11358 nft_map_deactivat\n---truncated---"
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
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"value": "AV:L - The attacker-controlled side of the race is driven entirely through NETLINK_NETFILTER `sendmsg()` batches (`nfnetlink_rcv_batch` → `nf_tables_commit`) and the freeing side through the `delete_module()` syscall; no network, adjacent-network, or remote-peer data reaches this code.\nAC:L - The attacker keeps the global destroy workqueue permanently non-empty by looping nftables commit batches, and `nf_tables_trans_destroy_work()` holds each batch across a `synchronize_rcu()` grace period, so the window during which `__nft_release_table()` can free a still-referenced set is wide and hit reliably; no memory-layout or other attacker-uncontrollable precondition is required beyond the teardown event itself, which is accounted for under User Interaction.\nPR:L - Creating the tables, sets and pending element-destroy transactions only requires `CAP_NET_ADMIN` in the netlink socket's user namespace (`netlink_net_capable`), which any unprivileged local user obtains with `unshare -Urn`, and module removal frees tables in *every* live netns including the attacker's own.\nUI:R - The freeing side is only reached via `delete_module()`, which needs `capable(CAP_SYS_MODULE)` in the initial user namespace, so a separate privileged user or administrative automation must unload `nf_tables` for the attacker's primed race to fire.\nS:U - The use-after-free occurs on kernel slab memory and is exploited within the kernel's own security authority; no VM, hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - `nft_set_elem_ext()` reads the freed set's `ops` pointer and adds `ops->elemsize` as an offset, so a reallocated slab lets the attacker aim reads at arbitrary kernel addresses and have the resulting `nft_set_ext` contents processed, yielding disclosure well beyond a bounded leak.\nI:H - The destroy path performs indirect calls through pointers read from the freed object (`set->ops->destroy(ctx, set)` in `nft_set_destroy()`, `set->exprs[i]->ops->destroy`) plus writes via `nft_set_put()`'s refcount decrement and `nft_use_dec()` through an OOB-derived pointer, giving both a write primitive and control-flow hijack potential.\nA:H - Even unweaponised, the slab use-after-free in `nf_tables_trans_destroy_work()` dereferences freed memory from a kworker context, producing a kernel oops/panic (KASAN report in the commit message) and taking the machine down."
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"url": "https://git.kernel.org/stable/c/24cea9677025e0de419989ecb692acd4bb34cac2",
"tags": [
"x_transferred"
]
},
{
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html",
"tags": [
"x_transferred"
]
}
]
},
{
"x_adpType": "supplier",
"providerMetadata": {
"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"shortName": "siemens-SADP",
"dateUpdated": "2026-10-15T00:41:17.807Z"
},
"affected": [
{
"vendor": "Siemens",
"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "V1.1.1",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
}
],
"references": [
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
}
]
}
]
},
"dataVersion": "5.2"
}