{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipvlan: Fix out-of-bound bugs caused by unset skb->mac_header\n\nIf an AF_PACKET socket is used to send packets through ipvlan and the\ndefault xmit function of the AF_PACKET socket is changed from\ndev_queue_xmit() to packet_direct_xmit() via setsockopt() with the option\nname of PACKET_QDISC_BYPASS, the skb->mac_header may not be reset and\nremains as the initial value of 65535, this may trigger slab-out-of-bounds\nbugs as following:\n\n=================================================================\nUG: KASAN: slab-out-of-bounds in ipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]\nPU: 2 PID: 1768 Comm: raw_send Kdump: loaded Not tainted 6.0.0-rc4+ #6\nardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33\nall Trace:\nprint_address_description.constprop.0+0x1d/0x160\nprint_report.cold+0x4f/0x112\nkasan_report+0xa3/0x130\nipvlan_xmit_mode_l2+0xdb/0x330 [ipvlan]\nipvlan_start_xmit+0x29/0xa0 [ipvlan]\n__dev_direct_xmit+0x2e2/0x380\npacket_direct_xmit+0x22/0x60\npacket_snd+0x7c9/0xc40\nsock_sendmsg+0x9a/0xa0\n__sys_sendto+0x18a/0x230\n__x64_sys_sendto+0x74/0x90\ndo_syscall_64+0x3b/0x90\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nThe root cause is:\n  1. packet_snd() only reset skb->mac_header when sock->type is SOCK_RAW\n     and skb->protocol is not specified as in packet_parse_headers()\n\n  2. packet_direct_xmit() doesn't reset skb->mac_header as dev_queue_xmit()\n\nIn this case, skb->mac_header is 65535 when ipvlan_xmit_mode_l2() is\ncalled. So when ipvlan_xmit_mode_l2() gets mac header with eth_hdr() which\nuse \"skb->head + skb->mac_header\", out-of-bound access occurs.\n\nThis patch replaces eth_hdr() with skb_eth_hdr() in ipvlan_xmit_mode_l2()\nand reset mac header in multicast to solve this out-of-bound bug."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/net/ipvlan/ipvlan_core.c"
               ],
               "versions": [
                  {
                     "version": "2ad7bf363841",
                     "lessThan": "e2b46cd5796f",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2ad7bf363841",
                     "lessThan": "25efdbe5fe54",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2ad7bf363841",
                     "lessThan": "bffcdade259c",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2ad7bf363841",
                     "lessThan": "346e94aa4a99",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2ad7bf363841",
                     "lessThan": "ab4a733874ea",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2ad7bf363841",
                     "lessThan": "8d06006c7eb7",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2ad7bf363841",
                     "lessThan": "b583e6b25bf9",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "2ad7bf363841",
                     "lessThan": "81225b2ea161",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "drivers/net/ipvlan/ipvlan_core.c"
               ],
               "versions": [
                  {
                     "version": "3.19",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "3.19",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.9.330",
                     "lessThanOrEqual": "4.9.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.14.295",
                     "lessThanOrEqual": "4.14.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "4.19.260",
                     "lessThanOrEqual": "4.19.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.4.215",
                     "lessThanOrEqual": "5.4.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.146",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.71",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.19.12",
                     "lessThanOrEqual": "5.19.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.0",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/e2b46cd5796f083e452fbc624f65b80328b0c1a4"
            },
            {
               "url": "https://git.kernel.org/stable/c/25efdbe5fe542c3063d1948cc4e98abcb57621ca"
            },
            {
               "url": "https://git.kernel.org/stable/c/bffcdade259c05ab3436b5fab711612093c275ef"
            },
            {
               "url": "https://git.kernel.org/stable/c/346e94aa4a99378592c46d6a34c72703a32bd5be"
            },
            {
               "url": "https://git.kernel.org/stable/c/ab4a733874ead120691e8038272d22f8444d3638"
            },
            {
               "url": "https://git.kernel.org/stable/c/8d06006c7eb75587d986da46c48ba9274f94e8e7"
            },
            {
               "url": "https://git.kernel.org/stable/c/b583e6b25bf9321c91154f6c78d2173ef12c4241"
            },
            {
               "url": "https://git.kernel.org/stable/c/81225b2ea161af48e093f58e8dfee6d705b16af4"
            }
         ],
         "title": "ipvlan: Fix out-of-bound bugs caused by unset skb->mac_header",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2022-48651",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}