{ "containers": { "cna": { "providerMetadata": { "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" }, "descriptions": [ { "lang": "en", "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 \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 \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---" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/ipv6/ila/ila.h", "net/ipv6/ila/ila_main.c", "net/ipv6/ila/ila_xlat.c" ], "versions": [ { "version": "7f00feaf1076", "lessThan": "43d34110882b", "status": "affected", "versionType": "git" }, { "version": "7f00feaf1076", "lessThan": "dcaf4e221682", "status": "affected", "versionType": "git" }, { "version": "7f00feaf1076", "lessThan": "93ee345ba349", "status": "affected", "versionType": "git" }, { "version": "7f00feaf1076", "lessThan": "bda4d84ac0d5", "status": "affected", "versionType": "git" }, { "version": "7f00feaf1076", "lessThan": "925c18a7cff9", "status": "affected", "versionType": "git" }, { "version": "7f00feaf1076", "lessThan": "18a5a1694046", "status": "affected", "versionType": "git" }, { "version": "7f00feaf1076", "lessThan": "47abd8adddbc", "status": "affected", "versionType": "git" }, { "version": "7f00feaf1076", "lessThan": "031ae72825ce", "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/ipv6/ila/ila.h", "net/ipv6/ila/ila_main.c", "net/ipv6/ila/ila_xlat.c" ], "versions": [ { "version": "4.5", "status": "affected" }, { "version": "0", "lessThan": "4.5", "status": "unaffected", "versionType": "custom" }, { "version": "4.19.322", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.4.284", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.10.226", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.15.167", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.1.110", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.51", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.10.10", "lessThanOrEqual": "6.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.11", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/43d34110882b97ba1ec66cc8234b18983efb9abf" }, { "url": "https://git.kernel.org/stable/c/dcaf4e2216824839d26727a15b638c6a677bd9fc" }, { "url": "https://git.kernel.org/stable/c/93ee345ba349922834e6a9d1dadabaedcc12dce6" }, { "url": "https://git.kernel.org/stable/c/bda4d84ac0d5421b346faee720011f58bdb99673" }, { "url": "https://git.kernel.org/stable/c/925c18a7cff93d8a4320d652351294ff7d0ac93c" }, { "url": "https://git.kernel.org/stable/c/18a5a16940464b301ea91bf5da3a324aedb347b2" }, { "url": "https://git.kernel.org/stable/c/47abd8adddbc0aecb8f231269ef659148d5dabe4" }, { "url": "https://git.kernel.org/stable/c/031ae72825cef43e4650140b800ad58bf7a6a466" } ], "title": "ila: call nf_unregister_net_hooks() sooner", "x_generator": { "engine": "bippy-c9c4e1df01b2" } } }, "cveMetadata": { "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", "cveID": "CVE-2024-46782", "requesterUserId": "gregkh@kernel.org", "serial": "1", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.0" }