mirror of
https://github.com/fkie-cad/nvd-json-data-feeds.git
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203 lines
14 KiB
JSON
203 lines
14 KiB
JSON
{
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"id": "CVE-2024-46782",
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"published": "2024-09-18T08:15:05.577",
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"lastModified": "2024-09-23T16:32:04.373",
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"vulnStatus": "Analyzed",
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"cveTags": [],
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nila: call nf_unregister_net_hooks() sooner\n\nsyzbot found an use-after-free Read in ila_nf_input [1]\n\nIssue here is that ila_xlat_exit_net() frees the rhashtable,\nthen call nf_unregister_net_hooks().\n\nIt should be done in the reverse way, with a synchronize_rcu().\n\nThis is a good match for a pre_exit() method.\n\n[1]\n BUG: KASAN: use-after-free in rht_key_hashfn include/linux/rhashtable.h:159 [inline]\n BUG: KASAN: use-after-free in __rhashtable_lookup include/linux/rhashtable.h:604 [inline]\n BUG: KASAN: use-after-free in rhashtable_lookup include/linux/rhashtable.h:646 [inline]\n BUG: KASAN: use-after-free in rhashtable_lookup_fast+0x77a/0x9b0 include/linux/rhashtable.h:672\nRead of size 4 at addr ffff888064620008 by task ksoftirqd/0/16\n\nCPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.11.0-rc4-syzkaller-00238-g2ad6d23f465a #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:93 [inline]\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119\n print_address_description mm/kasan/report.c:377 [inline]\n print_report+0x169/0x550 mm/kasan/report.c:488\n kasan_report+0x143/0x180 mm/kasan/report.c:601\n rht_key_hashfn include/linux/rhashtable.h:159 [inline]\n __rhashtable_lookup include/linux/rhashtable.h:604 [inline]\n rhashtable_lookup include/linux/rhashtable.h:646 [inline]\n rhashtable_lookup_fast+0x77a/0x9b0 include/linux/rhashtable.h:672\n ila_lookup_wildcards net/ipv6/ila/ila_xlat.c:132 [inline]\n ila_xlat_addr net/ipv6/ila/ila_xlat.c:652 [inline]\n ila_nf_input+0x1fe/0x3c0 net/ipv6/ila/ila_xlat.c:190\n nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]\n nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626\n nf_hook include/linux/netfilter.h:269 [inline]\n NF_HOOK+0x29e/0x450 include/linux/netfilter.h:312\n __netif_receive_skb_one_core net/core/dev.c:5661 [inline]\n __netif_receive_skb+0x1ea/0x650 net/core/dev.c:5775\n process_backlog+0x662/0x15b0 net/core/dev.c:6108\n __napi_poll+0xcb/0x490 net/core/dev.c:6772\n napi_poll net/core/dev.c:6841 [inline]\n net_rx_action+0x89b/0x1240 net/core/dev.c:6963\n handle_softirqs+0x2c4/0x970 kernel/softirq.c:554\n run_ksoftirqd+0xca/0x130 kernel/softirq.c:928\n smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164\n kthread+0x2f0/0x390 kernel/kthread.c:389\n ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244\n </TASK>\n\nThe buggy address belongs to the physical page:\npage: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x64620\nflags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)\npage_type: 0xbfffffff(buddy)\nraw: 00fff00000000000 ffffea0000959608 ffffea00019d9408 0000000000000000\nraw: 0000000000000000 0000000000000003 00000000bfffffff 0000000000000000\npage dumped because: kasan: bad access detected\npage_owner tracks the page as freed\npage last allocated via order 3, migratetype Unmovable, gfp_mask 0x52dc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_ZERO), pid 5242, tgid 5242 (syz-executor), ts 73611328570, free_ts 618981657187\n set_page_owner include/linux/page_owner.h:32 [inline]\n post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1493\n prep_new_page mm/page_alloc.c:1501 [inline]\n get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3439\n __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4695\n __alloc_pages_node_noprof include/linux/gfp.h:269 [inline]\n alloc_pages_node_noprof include/linux/gfp.h:296 [inline]\n ___kmalloc_large_node+0x8b/0x1d0 mm/slub.c:4103\n __kmalloc_large_node_noprof+0x1a/0x80 mm/slub.c:4130\n __do_kmalloc_node mm/slub.c:4146 [inline]\n __kmalloc_node_noprof+0x2d2/0x440 mm/slub.c:4164\n __kvmalloc_node_noprof+0x72/0x190 mm/util.c:650\n bucket_table_alloc lib/rhashtable.c:186 [inline]\n rhashtable_init_noprof+0x534/0xa60 lib/rhashtable.c:1071\n ila_xlat_init_net+0xa0/0x110 net/ipv6/ila/ila_xlat.c:613\n ops_ini\n---truncated---"
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},
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{
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"lang": "es",
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ila: llamar a nf_unregister_net_hooks() antes de que syzbot encuentre una lectura de uso posterior a la liberaci\u00f3n en ila_nf_input [1] El problema aqu\u00ed es que ila_xlat_exit_net() libera la tabla rhash y luego llama a nf_unregister_net_hooks(). Deber\u00eda hacerse de forma inversa, con unsynchronous_rcu(). Esta es una buena combinaci\u00f3n para un m\u00e9todo pre_exit(). [1] ERROR: KASAN: use after free en rht_key_hashfn include/linux/rhashtable.h:159 [en l\u00ednea] ERROR: KASAN: use after free en __rhashtable_lookup include/linux/rhashtable.h:604 [en l\u00ednea] ERROR: KASAN: use after free en rhashtable_lookup include/linux/rhashtable.h:646 [en l\u00ednea] ERROR: KASAN: use after free en rhashtable_lookup_fast+0x77a/0x9b0 include/linux/rhashtable.h:672 Lectura de tama\u00f1o 4 en la direcci\u00f3n ffff888064620008 por la tarea ksoftirqd/0/16 CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 No contaminado 6.11.0-rc4-syzkaller-00238-g2ad6d23f465a #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Seguimiento de llamadas: __dump_stack lib/dump_stack.c:93 [en l\u00ednea] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 print_address_description mm/kasan/report.c:377 [en l\u00ednea] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 rht_key_hashfn include/linux/rhashtable.h:159 [en l\u00ednea] __rhashtable_lookup include/linux/rhashtable.h:604 [en l\u00ednea] rhashtable_lookup include/linux/rhashtable.h:646 [en l\u00ednea] rhashtable_lookup_fast+0x77a/0x9b0 include/linux/rhashtable.h:672 ila_lookup_wildcards net/ipv6/ila/ila_xlat.c:132 [en l\u00ednea] ila_xlat_addr net/ipv6/ila/ila_xlat.c:652 [en l\u00ednea] ila_nf_input+0x1fe/0x3c0 net/ipv6/ila/ila_xlat.c:190 nf_hook_entry_hookfn include/linux/netfilter.h:154 [en l\u00ednea] nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626 nf_hook include/linux/netfilter.h:269 [en l\u00ednea] NF_HOOK+0x29e/0x450 include/linux/netfilter.h:312 __netif_receive_skb_one_core net/core/dev.c:5661 [en l\u00ednea] __netif_receive_skb+0x1ea/0x650 net/core/dev.c:5775 process_backlog+0x662/0x15b0 net/core/dev.c:6108 __napi_poll+0xcb/0x490 net/core/dev.c:6772 napi_poll net/core/dev.c:6841 [en l\u00ednea] net_rx_action+0x89b/0x1240 net/core/dev.c:6963 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 run_ksoftirqd+0xca/0x130 kernel/softirq.c:928 smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 La direcci\u00f3n con errores pertenece a la p\u00e1gina f\u00edsica: page: refcount:0 mapcount:0 mapping:0000000000000000 \u00edndice:0x0 pfn:0x64620 indicadores: 0xfff00000000000(nodo=0|zona=1|lastcpupid=0x7ff) tipo_p\u00e1gina: 0xbfffffff(amigo) sin procesar: 00fff00000000000 ffffea0000959608 ffffea00019d9408 0000000000000000 sin procesar: 000000000000000 000000000000003 00000000bfffffff 0000000000000000 p\u00e1gina volcada porque: kasan: se detect\u00f3 un acceso incorrecto page_owner rastrea la p\u00e1gina como liberada \u00faltima p\u00e1gina asignada mediante orden 3, migrantstype inamovible, gfp_mask 0x52dc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_ZERO), pid 5242, tgid 5242 (ejecutor del sistema), ts 73611328570, free_ts 618981657187 establecer_propietario_de_p\u00e1gina include/linux/page_owner.h:32 [en l\u00ednea] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1493 preparar_nueva_p\u00e1gina mm/page_alloc.c:1501 [en l\u00ednea] obtener_p\u00e1gina_de_lista_libre+0x2e4c/0x2f10 mm/page_alloc.c:3439 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4695 __alloc_pages_node_noprof include/linux/gfp.h:269 [en l\u00ednea] alloc_pages_node_noprof include/linux/gfp.h:296 [en l\u00ednea] ___kmalloc_large_node+0x8b/0x1d0 mm/slub.c:4103 __kmalloc_large_node_noprof+0x1a/0x80 mm/slub.c:4130 __do_kmalloc_node mm/slub.c:4146 [en l\u00ednea] __kmalloc_node_noprof+0x2d2/0x440 mm/slub.c:4164 __kvmalloc_node_noprof+0x72/0x190 mm/util.c:650 bucket_table_alloc lib/rhashtable.c:186 [en l\u00ednea] ---truncado---"
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}
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],
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"metrics": {
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"cvssMetricV31": [
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{
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"source": "nvd@nist.gov",
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"type": "Primary",
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"cvssData": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"attackVector": "LOCAL",
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"attackComplexity": "LOW",
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"privilegesRequired": "LOW",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"availabilityImpact": "HIGH",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"exploitabilityScore": 1.8,
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"impactScore": 5.9
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}
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]
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},
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"weaknesses": [
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{
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"source": "nvd@nist.gov",
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"type": "Primary",
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"description": [
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{
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"lang": "en",
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"value": "CWE-416"
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}
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]
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}
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],
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"configurations": [
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{
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"nodes": [
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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