cve-2023-52435
Vulnerability from cvelistv5
Published
2024-02-20 18:27
Modified
2024-12-19 08:19
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: prevent mss overflow in skb_segment() Once again syzbot is able to crash the kernel in skb_segment() [1] GSO_BY_FRAGS is a forbidden value, but unfortunately the following computation in skb_segment() can reach it quite easily : mss = mss * partial_segs; 65535 = 3 * 5 * 17 * 257, so many initial values of mss can lead to a bad final result. Make sure to limit segmentation so that the new mss value is smaller than GSO_BY_FRAGS. [1] general protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077] CPU: 1 PID: 5079 Comm: syz-executor993 Not tainted 6.7.0-rc4-syzkaller-00141-g1ae4cd3cbdd0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551 Code: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00 RSP: 0018:ffffc900043473d0 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597 RDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070 RBP: ffffc90004347578 R08: 0000000000000005 R09: 000000000000ffff R10: 000000000000ffff R11: 0000000000000002 R12: ffff888063202ac0 R13: 0000000000010000 R14: 000000000000ffff R15: 0000000000000046 FS: 0000555556e7e380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020010000 CR3: 0000000027ee2000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> udp6_ufo_fragment+0xa0e/0xd00 net/ipv6/udp_offload.c:109 ipv6_gso_segment+0x534/0x17e0 net/ipv6/ip6_offload.c:120 skb_mac_gso_segment+0x290/0x610 net/core/gso.c:53 __skb_gso_segment+0x339/0x710 net/core/gso.c:124 skb_gso_segment include/net/gso.h:83 [inline] validate_xmit_skb+0x36c/0xeb0 net/core/dev.c:3626 __dev_queue_xmit+0x6f3/0x3d60 net/core/dev.c:4338 dev_queue_xmit include/linux/netdevice.h:3134 [inline] packet_xmit+0x257/0x380 net/packet/af_packet.c:276 packet_snd net/packet/af_packet.c:3087 [inline] packet_sendmsg+0x24c6/0x5220 net/packet/af_packet.c:3119 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xd5/0x180 net/socket.c:745 __sys_sendto+0x255/0x340 net/socket.c:2190 __do_sys_sendto net/socket.c:2202 [inline] __se_sys_sendto net/socket.c:2198 [inline] __x64_sys_sendto+0xe0/0x1b0 net/socket.c:2198 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f8692032aa9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff8d685418 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8692032aa9 RDX: 0000000000010048 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00000000000f4240 R08: 0000000020000540 R09: 0000000000000014 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff8d685480 R13: 0000000000000001 R14: 00007fff8d685480 R15: 0000000000000003 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551 Code: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00 RSP: 0018:ffffc900043473d0 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597 RDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070 RBP: ffffc90004347578 R0 ---truncated---
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0d3ffbbf8631d6db0552f46250015648991c856f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/23d05d563b7e7b0314e65c8e882bc27eac2da8e7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6c53e8547687d9c767c139cd4b50af566f58c29aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8f8f185643747fbb448de6aab0efa51c679909a3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/95b3904a261a9f810205da560e802cc326f50d77Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/989b0ff35fe5fc9652ee5bafbe8483db6f27b137Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cd1022eaf87be8e6151435bd4df4c242c347e083Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/23d05d563b7e7b0314e65c8e882bc27eac2da8e7Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6c53e8547687d9c767c139cd4b50af566f58c29aPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8f8f185643747fbb448de6aab0efa51c679909a3Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/95b3904a261a9f810205da560e802cc326f50d77Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/989b0ff35fe5fc9652ee5bafbe8483db6f27b137Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/cd1022eaf87be8e6151435bd4df4c242c347e083Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
Impacted products
Vendor Product Version
Linux Linux Version: 4.8
Show details on NVD website


{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-52435",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-02-22T16:45:46.929589Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-07-05T17:21:56.333Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T22:55:41.660Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/cd1022eaf87be8e6151435bd4df4c242c347e083"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/8f8f185643747fbb448de6aab0efa51c679909a3"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/6c53e8547687d9c767c139cd4b50af566f58c29a"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/989b0ff35fe5fc9652ee5bafbe8483db6f27b137"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/95b3904a261a9f810205da560e802cc326f50d77"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/23d05d563b7e7b0314e65c8e882bc27eac2da8e7"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/core/skbuff.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0d3ffbbf8631d6db0552f46250015648991c856f",
              "status": "affected",
              "version": "3953c46c3ac7eef31a9935427371c6f54a22f1ba",
              "versionType": "git"
            },
            {
              "lessThan": "cd1022eaf87be8e6151435bd4df4c242c347e083",
              "status": "affected",
              "version": "3953c46c3ac7eef31a9935427371c6f54a22f1ba",
              "versionType": "git"
            },
            {
              "lessThan": "8f8f185643747fbb448de6aab0efa51c679909a3",
              "status": "affected",
              "version": "3953c46c3ac7eef31a9935427371c6f54a22f1ba",
              "versionType": "git"
            },
            {
              "lessThan": "6c53e8547687d9c767c139cd4b50af566f58c29a",
              "status": "affected",
              "version": "3953c46c3ac7eef31a9935427371c6f54a22f1ba",
              "versionType": "git"
            },
            {
              "lessThan": "989b0ff35fe5fc9652ee5bafbe8483db6f27b137",
              "status": "affected",
              "version": "3953c46c3ac7eef31a9935427371c6f54a22f1ba",
              "versionType": "git"
            },
            {
              "lessThan": "95b3904a261a9f810205da560e802cc326f50d77",
              "status": "affected",
              "version": "3953c46c3ac7eef31a9935427371c6f54a22f1ba",
              "versionType": "git"
            },
            {
              "lessThan": "23d05d563b7e7b0314e65c8e882bc27eac2da8e7",
              "status": "affected",
              "version": "3953c46c3ac7eef31a9935427371c6f54a22f1ba",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/core/skbuff.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.8"
            },
            {
              "lessThan": "4.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.321",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.269",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.210",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.149",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.79",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.7",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: prevent mss overflow in skb_segment()\n\nOnce again syzbot is able to crash the kernel in skb_segment() [1]\n\nGSO_BY_FRAGS is a forbidden value, but unfortunately the following\ncomputation in skb_segment() can reach it quite easily :\n\n\tmss = mss * partial_segs;\n\n65535 = 3 * 5 * 17 * 257, so many initial values of mss can lead to\na bad final result.\n\nMake sure to limit segmentation so that the new mss value is smaller\nthan GSO_BY_FRAGS.\n\n[1]\n\ngeneral protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN\nKASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077]\nCPU: 1 PID: 5079 Comm: syz-executor993 Not tainted 6.7.0-rc4-syzkaller-00141-g1ae4cd3cbdd0 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023\nRIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551\nCode: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u003c0f\u003e b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00\nRSP: 0018:ffffc900043473d0 EFLAGS: 00010202\nRAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597\nRDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070\nRBP: ffffc90004347578 R08: 0000000000000005 R09: 000000000000ffff\nR10: 000000000000ffff R11: 0000000000000002 R12: ffff888063202ac0\nR13: 0000000000010000 R14: 000000000000ffff R15: 0000000000000046\nFS: 0000555556e7e380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000020010000 CR3: 0000000027ee2000 CR4: 00000000003506f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n\u003cTASK\u003e\nudp6_ufo_fragment+0xa0e/0xd00 net/ipv6/udp_offload.c:109\nipv6_gso_segment+0x534/0x17e0 net/ipv6/ip6_offload.c:120\nskb_mac_gso_segment+0x290/0x610 net/core/gso.c:53\n__skb_gso_segment+0x339/0x710 net/core/gso.c:124\nskb_gso_segment include/net/gso.h:83 [inline]\nvalidate_xmit_skb+0x36c/0xeb0 net/core/dev.c:3626\n__dev_queue_xmit+0x6f3/0x3d60 net/core/dev.c:4338\ndev_queue_xmit include/linux/netdevice.h:3134 [inline]\npacket_xmit+0x257/0x380 net/packet/af_packet.c:276\npacket_snd net/packet/af_packet.c:3087 [inline]\npacket_sendmsg+0x24c6/0x5220 net/packet/af_packet.c:3119\nsock_sendmsg_nosec net/socket.c:730 [inline]\n__sock_sendmsg+0xd5/0x180 net/socket.c:745\n__sys_sendto+0x255/0x340 net/socket.c:2190\n__do_sys_sendto net/socket.c:2202 [inline]\n__se_sys_sendto net/socket.c:2198 [inline]\n__x64_sys_sendto+0xe0/0x1b0 net/socket.c:2198\ndo_syscall_x64 arch/x86/entry/common.c:52 [inline]\ndo_syscall_64+0x40/0x110 arch/x86/entry/common.c:83\nentry_SYSCALL_64_after_hwframe+0x63/0x6b\nRIP: 0033:0x7f8692032aa9\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007fff8d685418 EFLAGS: 00000246 ORIG_RAX: 000000000000002c\nRAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8692032aa9\nRDX: 0000000000010048 RSI: 00000000200000c0 RDI: 0000000000000003\nRBP: 00000000000f4240 R08: 0000000020000540 R09: 0000000000000014\nR10: 0000000000000000 R11: 0000000000000246 R12: 00007fff8d685480\nR13: 0000000000000001 R14: 00007fff8d685480 R15: 0000000000000003\n\u003c/TASK\u003e\nModules linked in:\n---[ end trace 0000000000000000 ]---\nRIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551\nCode: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u003c0f\u003e b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00\nRSP: 0018:ffffc900043473d0 EFLAGS: 00010202\nRAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597\nRDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070\nRBP: ffffc90004347578 R0\n---truncated---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T08:19:27.880Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0d3ffbbf8631d6db0552f46250015648991c856f"
        },
        {
          "url": "https://git.kernel.org/stable/c/cd1022eaf87be8e6151435bd4df4c242c347e083"
        },
        {
          "url": "https://git.kernel.org/stable/c/8f8f185643747fbb448de6aab0efa51c679909a3"
        },
        {
          "url": "https://git.kernel.org/stable/c/6c53e8547687d9c767c139cd4b50af566f58c29a"
        },
        {
          "url": "https://git.kernel.org/stable/c/989b0ff35fe5fc9652ee5bafbe8483db6f27b137"
        },
        {
          "url": "https://git.kernel.org/stable/c/95b3904a261a9f810205da560e802cc326f50d77"
        },
        {
          "url": "https://git.kernel.org/stable/c/23d05d563b7e7b0314e65c8e882bc27eac2da8e7"
        }
      ],
      "title": "net: prevent mss overflow in skb_segment()",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-52435",
    "datePublished": "2024-02-20T18:27:27.245Z",
    "dateReserved": "2024-02-20T12:30:33.290Z",
    "dateUpdated": "2024-12-19T08:19:27.880Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-52435\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-02-20T20:15:08.063\",\"lastModified\":\"2024-11-21T08:39:45.323\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: prevent mss overflow in skb_segment()\\n\\nOnce again syzbot is able to crash the kernel in skb_segment() [1]\\n\\nGSO_BY_FRAGS is a forbidden value, but unfortunately the following\\ncomputation in skb_segment() can reach it quite easily :\\n\\n\\tmss = mss * partial_segs;\\n\\n65535 = 3 * 5 * 17 * 257, so many initial values of mss can lead to\\na bad final result.\\n\\nMake sure to limit segmentation so that the new mss value is smaller\\nthan GSO_BY_FRAGS.\\n\\n[1]\\n\\ngeneral protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN\\nKASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077]\\nCPU: 1 PID: 5079 Comm: syz-executor993 Not tainted 6.7.0-rc4-syzkaller-00141-g1ae4cd3cbdd0 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023\\nRIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551\\nCode: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u003c0f\u003e b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00\\nRSP: 0018:ffffc900043473d0 EFLAGS: 00010202\\nRAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597\\nRDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070\\nRBP: ffffc90004347578 R08: 0000000000000005 R09: 000000000000ffff\\nR10: 000000000000ffff R11: 0000000000000002 R12: ffff888063202ac0\\nR13: 0000000000010000 R14: 000000000000ffff R15: 0000000000000046\\nFS: 0000555556e7e380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000\\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 0000000020010000 CR3: 0000000027ee2000 CR4: 00000000003506f0\\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\nCall Trace:\\n\u003cTASK\u003e\\nudp6_ufo_fragment+0xa0e/0xd00 net/ipv6/udp_offload.c:109\\nipv6_gso_segment+0x534/0x17e0 net/ipv6/ip6_offload.c:120\\nskb_mac_gso_segment+0x290/0x610 net/core/gso.c:53\\n__skb_gso_segment+0x339/0x710 net/core/gso.c:124\\nskb_gso_segment include/net/gso.h:83 [inline]\\nvalidate_xmit_skb+0x36c/0xeb0 net/core/dev.c:3626\\n__dev_queue_xmit+0x6f3/0x3d60 net/core/dev.c:4338\\ndev_queue_xmit include/linux/netdevice.h:3134 [inline]\\npacket_xmit+0x257/0x380 net/packet/af_packet.c:276\\npacket_snd net/packet/af_packet.c:3087 [inline]\\npacket_sendmsg+0x24c6/0x5220 net/packet/af_packet.c:3119\\nsock_sendmsg_nosec net/socket.c:730 [inline]\\n__sock_sendmsg+0xd5/0x180 net/socket.c:745\\n__sys_sendto+0x255/0x340 net/socket.c:2190\\n__do_sys_sendto net/socket.c:2202 [inline]\\n__se_sys_sendto net/socket.c:2198 [inline]\\n__x64_sys_sendto+0xe0/0x1b0 net/socket.c:2198\\ndo_syscall_x64 arch/x86/entry/common.c:52 [inline]\\ndo_syscall_64+0x40/0x110 arch/x86/entry/common.c:83\\nentry_SYSCALL_64_after_hwframe+0x63/0x6b\\nRIP: 0033:0x7f8692032aa9\\nCode: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48\\nRSP: 002b:00007fff8d685418 EFLAGS: 00000246 ORIG_RAX: 000000000000002c\\nRAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8692032aa9\\nRDX: 0000000000010048 RSI: 00000000200000c0 RDI: 0000000000000003\\nRBP: 00000000000f4240 R08: 0000000020000540 R09: 0000000000000014\\nR10: 0000000000000000 R11: 0000000000000246 R12: 00007fff8d685480\\nR13: 0000000000000001 R14: 00007fff8d685480 R15: 0000000000000003\\n\u003c/TASK\u003e\\nModules linked in:\\n---[ end trace 0000000000000000 ]---\\nRIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551\\nCode: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u003c0f\u003e b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00\\nRSP: 0018:ffffc900043473d0 EFLAGS: 00010202\\nRAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597\\nRDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070\\nRBP: ffffc90004347578 R0\\n---truncated---\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: previene el desbordamiento de mss en skb_segment() Una vez m\u00e1s, syzbot puede bloquear el kernel en skb_segment() [1] GSO_BY_FRAGS es un valor prohibido, pero desafortunadamente el siguiente c\u00e1lculo en skb_segment () puede alcanzarlo con bastante facilidad: mss = mss * part_segs; 65535 = 3 * 5 * 17 * 257, por lo que muchos valores iniciales de mss pueden llevar a un mal resultado final. Aseg\u00farese de limitar la segmentaci\u00f3n para que el nuevo valor de mss sea menor que GSO_BY_FRAGS. [1] falla de protecci\u00f3n general, probablemente para direcci\u00f3n no can\u00f3nica 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref en rango [0x0000000000000070-0x0000000000000077] CPU: 1 PID: 5079 Comm: syz-executor993 Not tainted 6.7.0-rc4-syzkaller-00141-g1ae4cd3cbdd0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551 Code: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u0026lt;0f\u0026gt; b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00 RSP: 0018:ffffc900043473d0 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597 RDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070 RBP: ffffc90004347578 R08: 0000000000000005 R09: 000000000000ffff R10: 000000000000ffff R11: 0000000000000002 R12: ffff888063202ac0 R13: 0000000000010000 R14: 000000000000ffff R15: 0000000000000046 FS: 0000555556e7e380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020010000 CR3: 0000000027ee2000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace:  udp6_ufo_fragment+0xa0e/0xd00 net/ipv6/udp_offload.c:109 ipv6_gso_segment+0x534/0x17e0 net/ipv6/ip6_offload.c:120 skb_mac_gso_segment+0x290/0x610 net/core/gso.c:53 __skb_gso_segment+0x339/0x710 net/core/gso.c:124 skb_gso_segment include/net/gso.h:83 [inline] validate_xmit_skb+0x36c/0xeb0 net/core/dev.c:3626 __dev_queue_xmit+0x6f3/0x3d60 net/core/dev.c:4338 dev_queue_xmit include/linux/netdevice.h:3134 [inline] packet_xmit+0x257/0x380 net/packet/af_packet.c:276 packet_snd net/packet/af_packet.c:3087 [inline] packet_sendmsg+0x24c6/0x5220 net/packet/af_packet.c:3119 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xd5/0x180 net/socket.c:745 __sys_sendto+0x255/0x340 net/socket.c:2190 __do_sys_sendto net/socket.c:2202 [inline] __se_sys_sendto net/socket.c:2198 [inline] __x64_sys_sendto+0xe0/0x1b0 net/socket.c:2198 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f8692032aa9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u0026lt;48\u0026gt; 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff8d685418 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8692032aa9 RDX: 0000000000010048 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00000000000f4240 R08: 0000000020000540 R09: 0000000000000014 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff8d685480 R13: 0000000000000001 R14: 00007fff8d685480 R15: 0000000000000003  Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:skb_segment+0x181d/0x3f30 net/core/skbuff.c:4551 Code: 83 e3 02 e9 fb ed ff ff e8 90 68 1c f9 48 8b 84 24 f8 00 00 00 48 8d 78 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 \u0026lt;0f\u0026gt; b6 04 02 84 c0 74 08 3c 03 0f 8e 8a 21 00 00 48 8b 84 24 f8 00 RSP: 0018:ffffc900043473d0 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000010046 RCX: ffffffff886b1597 RDX: 000000000000000e RSI: ffffffff886b2520 RDI: 0000000000000070 RBP: ffffc90004347578 R0 ---truncated--- \"}],\"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:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-119\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"5.4.269\",\"matchCriteriaId\":\"48E561A5-2F59-4E74-BFAB-39B8D844FD15\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5.0\",\"versionEndExcluding\":\"5.10.210\",\"matchCriteriaId\":\"B39742A2-A0C1-490C-95CC-FB78D6D70698\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11.0\",\"versionEndExcluding\":\"5.15.149\",\"matchCriteriaId\":\"E6FB1C44-BEEE-4D31-AD44-E15806EA6249\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16.0\",\"versionEndExcluding\":\"6.1.79\",\"matchCriteriaId\":\"3B0A907E-1010-4294-AEFE-0EB5684AF52C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2.0\",\"versionEndExcluding\":\"6.6.11\",\"matchCriteriaId\":\"B476EA8E-7141-4ABB-8EF7-F7B6806D4892\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.7:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"3A0038DE-E183-4958-A6E3-CE3821FEAFBF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.7:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"E31AD4FC-436C-44AB-BCAB-3A0B37F69EE0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.7:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"C56C6E04-4F04-44A3-8DB8-93899903CFCF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.7:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"5C78EDA4-8BE6-42FC-9512-49032D525A55\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.7:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"32F2E5CA-13C6-4601-B530-D465CBF73D1C\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0d3ffbbf8631d6db0552f46250015648991c856f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/23d05d563b7e7b0314e65c8e882bc27eac2da8e7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6c53e8547687d9c767c139cd4b50af566f58c29a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8f8f185643747fbb448de6aab0efa51c679909a3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/95b3904a261a9f810205da560e802cc326f50d77\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/989b0ff35fe5fc9652ee5bafbe8483db6f27b137\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cd1022eaf87be8e6151435bd4df4c242c347e083\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/23d05d563b7e7b0314e65c8e882bc27eac2da8e7\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6c53e8547687d9c767c139cd4b50af566f58c29a\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8f8f185643747fbb448de6aab0efa51c679909a3\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/95b3904a261a9f810205da560e802cc326f50d77\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/989b0ff35fe5fc9652ee5bafbe8483db6f27b137\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cd1022eaf87be8e6151435bd4df4c242c347e083\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.