CVE-2023-52577
Vulnerability from cvelistv5
Published
2024-03-02 21:59
Modified
2024-11-04 14:49
Severity ?
Summary
dccp: fix dccp_v4_err()/dccp_v6_err() again
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website


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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndccp: fix dccp_v4_err()/dccp_v6_err() again\n\ndh-\u003edccph_x is the 9th byte (offset 8) in \"struct dccp_hdr\",\nnot in the \"byte 7\" as Jann claimed.\n\nWe need to make sure the ICMP messages are big enough,\nusing more standard ways (no more assumptions).\n\nsyzbot reported:\nBUG: KMSAN: uninit-value in pskb_may_pull_reason include/linux/skbuff.h:2667 [inline]\nBUG: KMSAN: uninit-value in pskb_may_pull include/linux/skbuff.h:2681 [inline]\nBUG: KMSAN: uninit-value in dccp_v6_err+0x426/0x1aa0 net/dccp/ipv6.c:94\npskb_may_pull_reason include/linux/skbuff.h:2667 [inline]\npskb_may_pull include/linux/skbuff.h:2681 [inline]\ndccp_v6_err+0x426/0x1aa0 net/dccp/ipv6.c:94\nicmpv6_notify+0x4c7/0x880 net/ipv6/icmp.c:867\nicmpv6_rcv+0x19d5/0x30d0\nip6_protocol_deliver_rcu+0xda6/0x2a60 net/ipv6/ip6_input.c:438\nip6_input_finish net/ipv6/ip6_input.c:483 [inline]\nNF_HOOK include/linux/netfilter.h:304 [inline]\nip6_input+0x15d/0x430 net/ipv6/ip6_input.c:492\nip6_mc_input+0xa7e/0xc80 net/ipv6/ip6_input.c:586\ndst_input include/net/dst.h:468 [inline]\nip6_rcv_finish+0x5db/0x870 net/ipv6/ip6_input.c:79\nNF_HOOK include/linux/netfilter.h:304 [inline]\nipv6_rcv+0xda/0x390 net/ipv6/ip6_input.c:310\n__netif_receive_skb_one_core net/core/dev.c:5523 [inline]\n__netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5637\nnetif_receive_skb_internal net/core/dev.c:5723 [inline]\nnetif_receive_skb+0x58/0x660 net/core/dev.c:5782\ntun_rx_batched+0x83b/0x920\ntun_get_user+0x564c/0x6940 drivers/net/tun.c:2002\ntun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048\ncall_write_iter include/linux/fs.h:1985 [inline]\nnew_sync_write fs/read_write.c:491 [inline]\nvfs_write+0x8ef/0x15c0 fs/read_write.c:584\nksys_write+0x20f/0x4c0 fs/read_write.c:637\n__do_sys_write fs/read_write.c:649 [inline]\n__se_sys_write fs/read_write.c:646 [inline]\n__x64_sys_write+0x93/0xd0 fs/read_write.c:646\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nUninit was created at:\nslab_post_alloc_hook+0x12f/0xb70 mm/slab.h:767\nslab_alloc_node mm/slub.c:3478 [inline]\nkmem_cache_alloc_node+0x577/0xa80 mm/slub.c:3523\nkmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:559\n__alloc_skb+0x318/0x740 net/core/skbuff.c:650\nalloc_skb include/linux/skbuff.h:1286 [inline]\nalloc_skb_with_frags+0xc8/0xbd0 net/core/skbuff.c:6313\nsock_alloc_send_pskb+0xa80/0xbf0 net/core/sock.c:2795\ntun_alloc_skb drivers/net/tun.c:1531 [inline]\ntun_get_user+0x23cf/0x6940 drivers/net/tun.c:1846\ntun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048\ncall_write_iter include/linux/fs.h:1985 [inline]\nnew_sync_write fs/read_write.c:491 [inline]\nvfs_write+0x8ef/0x15c0 fs/read_write.c:584\nksys_write+0x20f/0x4c0 fs/read_write.c:637\n__do_sys_write fs/read_write.c:649 [inline]\n__se_sys_write fs/read_write.c:646 [inline]\n__x64_sys_write+0x93/0xd0 fs/read_write.c:646\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nCPU: 0 PID: 4995 Comm: syz-executor153 Not tainted 6.6.0-rc1-syzkaller-00014-ga747acc0b752 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023"
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      "title": "dccp: fix dccp_v4_err()/dccp_v6_err() again",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-52577",
    "datePublished": "2024-03-02T21:59:45.279Z",
    "dateReserved": "2024-03-02T21:55:42.568Z",
    "dateUpdated": "2024-11-04T14:49:04.059Z",
    "state": "PUBLISHED"
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  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-52577\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-03-02T22:15:49.537\",\"lastModified\":\"2024-04-04T14:15:09.200\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndccp: fix dccp_v4_err()/dccp_v6_err() again\\n\\ndh-\u003edccph_x is the 9th byte (offset 8) in \\\"struct dccp_hdr\\\",\\nnot in the \\\"byte 7\\\" as Jann claimed.\\n\\nWe need to make sure the ICMP messages are big enough,\\nusing more standard ways (no more assumptions).\\n\\nsyzbot reported:\\nBUG: KMSAN: uninit-value in pskb_may_pull_reason include/linux/skbuff.h:2667 [inline]\\nBUG: KMSAN: uninit-value in pskb_may_pull include/linux/skbuff.h:2681 [inline]\\nBUG: KMSAN: uninit-value in dccp_v6_err+0x426/0x1aa0 net/dccp/ipv6.c:94\\npskb_may_pull_reason include/linux/skbuff.h:2667 [inline]\\npskb_may_pull include/linux/skbuff.h:2681 [inline]\\ndccp_v6_err+0x426/0x1aa0 net/dccp/ipv6.c:94\\nicmpv6_notify+0x4c7/0x880 net/ipv6/icmp.c:867\\nicmpv6_rcv+0x19d5/0x30d0\\nip6_protocol_deliver_rcu+0xda6/0x2a60 net/ipv6/ip6_input.c:438\\nip6_input_finish net/ipv6/ip6_input.c:483 [inline]\\nNF_HOOK include/linux/netfilter.h:304 [inline]\\nip6_input+0x15d/0x430 net/ipv6/ip6_input.c:492\\nip6_mc_input+0xa7e/0xc80 net/ipv6/ip6_input.c:586\\ndst_input include/net/dst.h:468 [inline]\\nip6_rcv_finish+0x5db/0x870 net/ipv6/ip6_input.c:79\\nNF_HOOK include/linux/netfilter.h:304 [inline]\\nipv6_rcv+0xda/0x390 net/ipv6/ip6_input.c:310\\n__netif_receive_skb_one_core net/core/dev.c:5523 [inline]\\n__netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5637\\nnetif_receive_skb_internal net/core/dev.c:5723 [inline]\\nnetif_receive_skb+0x58/0x660 net/core/dev.c:5782\\ntun_rx_batched+0x83b/0x920\\ntun_get_user+0x564c/0x6940 drivers/net/tun.c:2002\\ntun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048\\ncall_write_iter include/linux/fs.h:1985 [inline]\\nnew_sync_write fs/read_write.c:491 [inline]\\nvfs_write+0x8ef/0x15c0 fs/read_write.c:584\\nksys_write+0x20f/0x4c0 fs/read_write.c:637\\n__do_sys_write fs/read_write.c:649 [inline]\\n__se_sys_write fs/read_write.c:646 [inline]\\n__x64_sys_write+0x93/0xd0 fs/read_write.c:646\\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\\ndo_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80\\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\\n\\nUninit was created at:\\nslab_post_alloc_hook+0x12f/0xb70 mm/slab.h:767\\nslab_alloc_node mm/slub.c:3478 [inline]\\nkmem_cache_alloc_node+0x577/0xa80 mm/slub.c:3523\\nkmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:559\\n__alloc_skb+0x318/0x740 net/core/skbuff.c:650\\nalloc_skb include/linux/skbuff.h:1286 [inline]\\nalloc_skb_with_frags+0xc8/0xbd0 net/core/skbuff.c:6313\\nsock_alloc_send_pskb+0xa80/0xbf0 net/core/sock.c:2795\\ntun_alloc_skb drivers/net/tun.c:1531 [inline]\\ntun_get_user+0x23cf/0x6940 drivers/net/tun.c:1846\\ntun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048\\ncall_write_iter include/linux/fs.h:1985 [inline]\\nnew_sync_write fs/read_write.c:491 [inline]\\nvfs_write+0x8ef/0x15c0 fs/read_write.c:584\\nksys_write+0x20f/0x4c0 fs/read_write.c:637\\n__do_sys_write fs/read_write.c:649 [inline]\\n__se_sys_write fs/read_write.c:646 [inline]\\n__x64_sys_write+0x93/0xd0 fs/read_write.c:646\\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\\ndo_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80\\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\\n\\nCPU: 0 PID: 4995 Comm: syz-executor153 Not tainted 6.6.0-rc1-syzkaller-00014-ga747acc0b752 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: dccp: corrija dccp_v4_err()/dccp_v6_err() nuevamente dh-\u0026gt;dccph_x es el noveno byte (desplazamiento 8) en \\\"struct dccp_hdr\\\", no en el \\\"byte 7\\\" como Jann reclamado. Necesitamos asegurarnos de que los mensajes ICMP sean lo suficientemente grandes, utilizando formas m\u00e1s est\u00e1ndar (sin m\u00e1s suposiciones). syzbot inform\u00f3: ERROR: KMSAN: valor uninit en pskb_may_pull_reason include/linux/skbuff.h:2667 [en l\u00ednea] ERROR: KMSAN: valor uninit en pskb_may_pull include/linux/skbuff.h:2681 [en l\u00ednea] ERROR: KMSAN: uninit -valor en dccp_v6_err+0x426/0x1aa0 net/dccp/ipv6.c:94 pskb_may_pull_reason include/linux/skbuff.h:2667 [en l\u00ednea] pskb_may_pull include/linux/skbuff.h:2681 [en l\u00ednea] dccp_v6_err+0x426/0x1aa0 net/ dccp/ipv6.c:94 icmpv6_notify+0x4c7/0x880 net/ipv6/icmp.c:867 icmpv6_rcv+0x19d5/0x30d0 ip6_protocol_deliver_rcu+0xda6/0x2a60 net/ipv6/ip6_input.c:438 ip6_input_finish net/ipv6 /ip6_input.c:483 [en l\u00ednea] NF_HOOK include/linux/netfilter.h:304 [en l\u00ednea] ip6_input+0x15d/0x430 net/ipv6/ip6_input.c:492 ip6_mc_input+0xa7e/0xc80 net/ipv6/ip6_input.c:586 dst_input include/net/dst .h:468 [en l\u00ednea] ip6_rcv_finish+0x5db/0x870 net/ipv6/ip6_input.c:79 NF_HOOK include/linux/netfilter.h:304 [en l\u00ednea] ipv6_rcv+0xda/0x390 net/ipv6/ip6_input.c:310 __netif_receive_skb_one_core net /core/dev.c:5523 [en l\u00ednea] __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5637 netif_receive_skb_internal net/core/dev.c:5723 [en l\u00ednea] netif_receive_skb+0x58/0x660 net/core/dev.c :5782 tun_rx_batched+0x83b/0x920 tun_get_user+0x564c/0x6940 drivers/net/tun.c:2002 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048 call_write_iter include/linux/fs.h:1985 [en l\u00ednea] new_sync_write fs /read_write.c:491 [en l\u00ednea] vfs_write+0x8ef/0x15c0 fs/read_write.c:584 ksys_write+0x20f/0x4c0 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [en l\u00ednea] __se_sys_write fs/read_write.c :646 [en l\u00ednea] __x64_sys_write+0x93/0xd0 fs/read_write.c:646 do_syscall_x64 arch/x86/entry/common.c:50 [en l\u00ednea] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 Entry_SYSCALL_64_after_hwframe+ 0x63/0xcd Uninit se cre\u00f3 en: slab_post_alloc_hook+0x12f/0xb70 mm/slab.h:767 slab_alloc_node mm/slub.c:3478 [en l\u00ednea] kmem_cache_alloc_node+0x577/0xa80 mm/slub.c:3523 kmalloc_reserve+0x13d/0x4 a0 neto/ core/skbuff.c:559 __alloc_skb+0x318/0x740 net/core/skbuff.c:650 alloc_skb include/linux/skbuff.h:1286 [en l\u00ednea] alloc_skb_with_frags+0xc8/0xbd0 net/core/skbuff.c:6313 sock_alloc_send_pskb+ 0xa80/0xbf0 net/core/sock.c:2795 controladores tun_alloc_skb/net/tun.c:1531 [en l\u00ednea] tun_get_user+0x23cf/0x6940 controladores/net/tun.c:1846 tun_chr_write_iter+0x3af/0x5d0 controladores/net/tun. c:2048 call_write_iter include/linux/fs.h:1985 [en l\u00ednea] new_sync_write fs/read_write.c:491 [en l\u00ednea] vfs_write+0x8ef/0x15c0 fs/read_write.c:584 ksys_write+0x20f/0x4c0 fs/read_write.c: 637 __do_sys_write fs/read_write.c:649 [en l\u00ednea] __se_sys_write fs/read_write.c:646 [en l\u00ednea] __x64_sys_write+0x93/0xd0 fs/read_write.c:646 do_syscall_x64 arch/x86/entry/common.c:50 [en l\u00ednea] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd CPU: 0 PID: 4995 Comm: syz-executor153 Not tainted 6.6.0-rc1-syzkaller-00014-ga747acc0b752 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/08/2023\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1512d8f45d3c5d0b5baa00bd8e600492fa569f40\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/26df9ab5de308caa1503d937533c56c35793018d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4600beae416d754a3cedbb1ecea8181ec05073b6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/60d73c62e3e4464f375758b6f2459c13d46465b6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/62c218124fe58372e0e1f60d5b634d21c264b337\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6af289746a636f71f4c0535a9801774118486c7a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/73be49248a04746096339a48a33fa2f03bd85969\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a6f4d582e25d512c9b492670b6608436694357b3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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