{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2023-52577",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-03-02T21:55:42.568Z",
        "datePublished": "2024-03-02T21:59:45.279Z",
        "dateUpdated": "2024-08-02T23:03:21.243Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2024-05-29T05:13:49.421Z"
            },
            "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->dccph_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"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/dccp/ipv4.c",
                        "net/dccp/ipv6.c"
                    ],
                    "versions": [
                        {
                            "version": "3533e1027255",
                            "lessThan": "4600beae416d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "177212bf6dc1",
                            "lessThan": "62c218124fe5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "7a7dd70cb954",
                            "lessThan": "a6f4d582e25d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4b8a938e329a",
                            "lessThan": "60d73c62e3e4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6ecf09699eb1",
                            "lessThan": "26df9ab5de30",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f8a7f10a1dcc",
                            "lessThan": "73be49248a04",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ec620c34f5fa",
                            "lessThan": "1512d8f45d3c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "977ad86c2a1b",
                            "lessThan": "6af289746a63",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/dccp/ipv4.c",
                        "net/dccp/ipv6.c"
                    ],
                    "versions": [
                        {
                            "version": "4.14.326",
                            "lessThan": "4.14.327",
                            "status": "affected",
                            "versionType": "custom"
                        },
                        {
                            "version": "4.19.295",
                            "lessThan": "4.19.296",
                            "status": "affected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.4.257",
                            "lessThan": "5.4.258",
                            "status": "affected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.10.195",
                            "lessThan": "5.10.198",
                            "status": "affected",
                            "versionType": "custom"
                        },
                        {
                            "version": "5.15.132",
                            "lessThan": "5.15.134",
                            "status": "affected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.1.53",
                            "lessThan": "6.1.56",
                            "status": "affected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.5.3",
                            "lessThan": "6.5.6",
                            "status": "affected",
                            "versionType": "custom"
                        }
                    ]
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                    "url": "https://git.kernel.org/stable/c/4600beae416d754a3cedbb1ecea8181ec05073b6"
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                    "url": "https://git.kernel.org/stable/c/6af289746a636f71f4c0535a9801774118486c7a"
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            "title": "dccp: fix dccp_v4_err()/dccp_v6_err() again",
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                                "timestamp": "2024-06-26T20:40:23.115267Z",
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                                "role": "CISA Coordinator",
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                "title": "CVE Program Container",
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