2024-07-14 02:06:08 +00:00

177 lines
12 KiB
JSON

{
"id": "CVE-2024-26882",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2024-04-17T11:15:10.060",
"lastModified": "2024-06-25T22:15:24.827",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ip_tunnel: make sure to pull inner header in ip_tunnel_rcv()\n\nApply the same fix than ones found in :\n\n8d975c15c0cd (\"ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()\")\n1ca1ba465e55 (\"geneve: make sure to pull inner header in geneve_rx()\")\n\nWe have to save skb->network_header in a temporary variable\nin order to be able to recompute the network_header pointer\nafter a pskb_inet_may_pull() call.\n\npskb_inet_may_pull() makes sure the needed headers are in skb->head.\n\nsyzbot reported:\nBUG: KMSAN: uninit-value in __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline]\n BUG: KMSAN: uninit-value in INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline]\n BUG: KMSAN: uninit-value in IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline]\n BUG: KMSAN: uninit-value in ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409\n __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline]\n INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline]\n IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline]\n ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409\n __ipgre_rcv+0x9bc/0xbc0 net/ipv4/ip_gre.c:389\n ipgre_rcv net/ipv4/ip_gre.c:411 [inline]\n gre_rcv+0x423/0x19f0 net/ipv4/ip_gre.c:447\n gre_rcv+0x2a4/0x390 net/ipv4/gre_demux.c:163\n ip_protocol_deliver_rcu+0x264/0x1300 net/ipv4/ip_input.c:205\n ip_local_deliver_finish+0x2b8/0x440 net/ipv4/ip_input.c:233\n NF_HOOK include/linux/netfilter.h:314 [inline]\n ip_local_deliver+0x21f/0x490 net/ipv4/ip_input.c:254\n dst_input include/net/dst.h:461 [inline]\n ip_rcv_finish net/ipv4/ip_input.c:449 [inline]\n NF_HOOK include/linux/netfilter.h:314 [inline]\n ip_rcv+0x46f/0x760 net/ipv4/ip_input.c:569\n __netif_receive_skb_one_core net/core/dev.c:5534 [inline]\n __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5648\n netif_receive_skb_internal net/core/dev.c:5734 [inline]\n netif_receive_skb+0x58/0x660 net/core/dev.c:5793\n tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1556\n tun_get_user+0x53b9/0x66e0 drivers/net/tun.c:2009\n tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2055\n call_write_iter include/linux/fs.h:2087 [inline]\n new_sync_write fs/read_write.c:497 [inline]\n vfs_write+0xb6b/0x1520 fs/read_write.c:590\n ksys_write+0x20f/0x4c0 fs/read_write.c:643\n __do_sys_write fs/read_write.c:655 [inline]\n __se_sys_write fs/read_write.c:652 [inline]\n __x64_sys_write+0x93/0xd0 fs/read_write.c:652\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\n\nUninit was created at:\n __alloc_pages+0x9a6/0xe00 mm/page_alloc.c:4590\n alloc_pages_mpol+0x62b/0x9d0 mm/mempolicy.c:2133\n alloc_pages+0x1be/0x1e0 mm/mempolicy.c:2204\n skb_page_frag_refill+0x2bf/0x7c0 net/core/sock.c:2909\n tun_build_skb drivers/net/tun.c:1686 [inline]\n tun_get_user+0xe0a/0x66e0 drivers/net/tun.c:1826\n tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2055\n call_write_iter include/linux/fs.h:2087 [inline]\n new_sync_write fs/read_write.c:497 [inline]\n vfs_write+0xb6b/0x1520 fs/read_write.c:590\n ksys_write+0x20f/0x4c0 fs/read_write.c:643\n __do_sys_write fs/read_write.c:655 [inline]\n __se_sys_write fs/read_write.c:652 [inline]\n __x64_sys_write+0x93/0xd0 fs/read_write.c:652\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x63/0x6b"
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: ip_tunnel: aseg\u00farese de extraer el encabezado interno en ip_tunnel_rcv(). Aplique la misma soluci\u00f3n que las encontradas en: 8d975c15c0cd (\"ip6_tunnel: aseg\u00farese de extraer el encabezado interno en __ip6_tnl_rcv() \") 1ca1ba465e55 (\"geneve: aseg\u00farese de extraer el encabezado interno en geneve_rx()\") Tenemos que guardar skb->network_header en una variable temporal para poder volver a calcular el puntero network_header despu\u00e9s de una llamada a pskb_inet_may_pull(). pskb_inet_may_pull() se asegura de que los encabezados necesarios est\u00e9n en skb->head. syzbot inform\u00f3: ERROR: KMSAN: valor uninit en __INET_ECN_decapsulate include/net/inet_ecn.h:253 [en l\u00ednea] ERROR: KMSAN: valor uninit en INET_ECN_decapsulate include/net/inet_ecn.h:275 [en l\u00ednea] ERROR: KMSAN: uninit -valor en IP_ECN_decapsulate include/net/inet_ecn.h:302 [en l\u00ednea] ERROR: KMSAN: valor uninit en ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409 __INET_ECN_decapsulate include/net/inet_ecn.h:253 [en l\u00ednea ] INET_ECN_decapsulate include/net/inet_ecn.h:275 [en l\u00ednea] IP_ECN_decapsulate include/net/inet_ecn.h:302 [en l\u00ednea] ip_tunnel_rcv+0xed9/0x2ed0 net/ipv4/ip_tunnel.c:409 __ipgre_rcv+0x9bc/0xbc0 net/ipv4/ ip_gre.c:389 ipgre_rcv net/ipv4/ip_gre.c:411 [en l\u00ednea] gre_rcv+0x423/0x19f0 net/ipv4/ip_gre.c:447 gre_rcv+0x2a4/0x390 net/ipv4/gre_demux.c:163 ip_protocol_deliver_rcu+0x264/ 0x1300 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2b8/0x440 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:314 [en l\u00ednea] ip_local_deliver+0x21f/0x490 net/ipv4/ip_input.c: 254 dst_input include/net/dst.h:461 [en l\u00ednea] ip_rcv_finish net/ipv4/ip_input.c:449 [en l\u00ednea] NF_HOOK include/linux/netfilter.h:314 [en l\u00ednea] ip_rcv+0x46f/0x760 net/ipv4/ip_input .c:569 __netif_receive_skb_one_core net/core/dev.c:5534 [en l\u00ednea] __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5648 netif_receive_skb_internal net/core/dev.c:5734 [en l\u00ednea] neto /core/dev.c:5793 tun_rx_batched+0x3ee/0x980 controladores/net/tun.c:1556 tun_get_user+0x53b9/0x66e0 controladores/net/tun.c:2009 tun_chr_write_iter+0x3af/0x5d0 controladores/net/tun.c:2055 call_write_iter include/linux/fs.h:2087 [en l\u00ednea] new_sync_write fs/read_write.c:497 [en l\u00ednea] vfs_write+0xb6b/0x1520 fs/read_write.c:590 ksys_write+0x20f/0x4c0 fs/read_write.c:643 __do_sys_write fs /read_write.c:655 [en l\u00ednea] __se_sys_write fs/read_write.c:652 [en l\u00ednea] __x64_sys_write+0x93/0xd0 fs/read_write.c:652 do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea] do_syscall_64+0xcf /0x1e0 arch/x86/entry/common.c:83 Entry_SYSCALL_64_after_hwframe+0x63/0x6b Uninit se cre\u00f3 en: __alloc_pages+0x9a6/0xe00 mm/page_alloc.c:4590 alloc_pages_mpol+0x62b/0x9d0 mm/mempolicy.c:2133 alloc_pages+ 0x1be /0x1e0 mm/mempolicy.c:2204 skb_page_frag_refill+0x2bf/0x7c0 net/core/sock.c:2909 tun_build_skb drivers/net/tun.c:1686 [en l\u00ednea] tun_get_user+0xe0a/0x66e0 drivers/net/tun.c:1826 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2055 call_write_iter include/linux/fs.h:2087 [en l\u00ednea] new_sync_write fs/read_write.c:497 [en l\u00ednea] vfs_write+0xb6b/0x1520 fs/read_write.c:590 ksys_write+0x20f/0x4c0 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [en l\u00ednea] __se_sys_write fs/read_write.c:652 [en l\u00ednea] __x64_sys_write+0x93/0xd0 fs/read_write.c:652 do_syscall_x64 arch /x86 /entry/common.c:52 [en l\u00ednea] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 Entry_SYSCALL_64_after_hwframe+0x63/0x6b"
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "nvd@nist.gov",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9
}
]
},
"weaknesses": [
{
"source": "nvd@nist.gov",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.10",
"versionEndExcluding": "5.4.273",
"matchCriteriaId": "4D065436-A1F0-4367-A345-B448C4CF1F74"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.5",
"versionEndExcluding": "5.10.214",
"matchCriteriaId": "65987874-467B-4D3B-91D6-68A129B34FB8"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.11",
"versionEndExcluding": "5.15.153",
"matchCriteriaId": "ACB69438-845D-4E3C-B114-3140611F9C0B"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.16",
"versionEndExcluding": "6.1.83",
"matchCriteriaId": "121A07F6-F505-4C47-86BF-9BB6CC7B6C19"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.2",
"versionEndExcluding": "6.6.23",
"matchCriteriaId": "E00814DC-0BA7-431A-9926-80FEB4A96C68"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.7",
"versionEndExcluding": "6.7.11",
"matchCriteriaId": "9B95D3A6-E162-47D5-ABFC-F3FA74FA7CFD"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.8",
"versionEndExcluding": "6.8.2",
"matchCriteriaId": "543A75FF-25B8-4046-A514-1EA8EDD87AB1"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/5c03387021cfa3336b97e0dcba38029917a8af2a",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/60044ab84836359534bd7153b92e9c1584140e4a",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/77fd5294ea09b21f6772ac954a121b87323cec80",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/b0ec2abf98267f14d032102551581c833b0659d3",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/c4c857723b37c20651300b3de4ff25059848b4b0",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/ca914f1cdee8a85799942c9b0ce5015bbd6844e1",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/ec6bb01e02cbd47781dd90775b631a1dc4bd9d2b",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/f6723d8dbfdc10c784a56748f86a9a3cd410dbd5",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
]
}