fkie_cve-2021-47397
Vulnerability from fkie_nvd
Published
2024-05-21 15:15
Modified
2024-12-24 16:06
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: sctp: break out if skb_header_pointer returns NULL in sctp_rcv_ootb We should always check if skb_header_pointer's return is NULL before using it, otherwise it may cause null-ptr-deref, as syzbot reported: KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] RIP: 0010:sctp_rcv_ootb net/sctp/input.c:705 [inline] RIP: 0010:sctp_rcv+0x1d84/0x3220 net/sctp/input.c:196 Call Trace: <IRQ> sctp6_rcv+0x38/0x60 net/sctp/ipv6.c:1109 ip6_protocol_deliver_rcu+0x2e9/0x1ca0 net/ipv6/ip6_input.c:422 ip6_input_finish+0x62/0x170 net/ipv6/ip6_input.c:463 NF_HOOK include/linux/netfilter.h:307 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] ip6_input+0x9c/0xd0 net/ipv6/ip6_input.c:472 dst_input include/net/dst.h:460 [inline] ip6_rcv_finish net/ipv6/ip6_input.c:76 [inline] NF_HOOK include/linux/netfilter.h:307 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] ipv6_rcv+0x28c/0x3c0 net/ipv6/ip6_input.c:297
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/77bc7dcf0fcc1519341a91788d7a2914fcfddf6dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8180611c238e11676612eb2a9828b1c7a3a4d77bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8c630a7b4f9dec63f08bd881ab77984a724a5124Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9c6591ae8e63f93c895ad5e2703c36c548aac997Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ec018021cf445abbe8e2f3e2a7f1dcc813cb8ea1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f7e745f8e94492a8ac0b0a26e25f2b19d342918fPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/77bc7dcf0fcc1519341a91788d7a2914fcfddf6dPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8180611c238e11676612eb2a9828b1c7a3a4d77bPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8c630a7b4f9dec63f08bd881ab77984a724a5124Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/9c6591ae8e63f93c895ad5e2703c36c548aac997Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ec018021cf445abbe8e2f3e2a7f1dcc813cb8ea1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f7e745f8e94492a8ac0b0a26e25f2b19d342918fPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.15
linux linux_kernel 5.15
linux linux_kernel 5.15


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "71991869-C1C9-4F7C-B9D3-9402D9418DE2",
              "versionEndExcluding": "4.14.249",
              "versionStartIncluding": "4.8",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "21C23429-F802-4256-B3C2-9EEA76AC11FF",
              "versionEndExcluding": "4.19.209",
              "versionStartIncluding": "4.15",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BFFC8E38-107A-4B6F-9FFD-9B2FD8B89EF0",
              "versionEndExcluding": "5.4.151",
              "versionStartIncluding": "4.20",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "60C740E4-6C54-40CD-A914-2232D8FC781D",
              "versionEndExcluding": "5.10.71",
              "versionStartIncluding": "5.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "1A437B0D-8305-4C72-B691-D26986A126CF",
              "versionEndExcluding": "5.14.10",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "E46C74C6-B76B-4C94-A6A4-FD2FFF62D644",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "60134C3A-06E4-48C1-B04F-2903732A4E56",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*",
              "matchCriteriaId": "0460DA88-8FE1-46A2-9DDA-1F1ABA552E71",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: break out if skb_header_pointer returns NULL in sctp_rcv_ootb\n\nWe should always check if skb_header_pointer\u0027s return is NULL before\nusing it, otherwise it may cause null-ptr-deref, as syzbot reported:\n\n  KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\n  RIP: 0010:sctp_rcv_ootb net/sctp/input.c:705 [inline]\n  RIP: 0010:sctp_rcv+0x1d84/0x3220 net/sctp/input.c:196\n  Call Trace:\n  \u003cIRQ\u003e\n   sctp6_rcv+0x38/0x60 net/sctp/ipv6.c:1109\n   ip6_protocol_deliver_rcu+0x2e9/0x1ca0 net/ipv6/ip6_input.c:422\n   ip6_input_finish+0x62/0x170 net/ipv6/ip6_input.c:463\n   NF_HOOK include/linux/netfilter.h:307 [inline]\n   NF_HOOK include/linux/netfilter.h:301 [inline]\n   ip6_input+0x9c/0xd0 net/ipv6/ip6_input.c:472\n   dst_input include/net/dst.h:460 [inline]\n   ip6_rcv_finish net/ipv6/ip6_input.c:76 [inline]\n   NF_HOOK include/linux/netfilter.h:307 [inline]\n   NF_HOOK include/linux/netfilter.h:301 [inline]\n   ipv6_rcv+0x28c/0x3c0 net/ipv6/ip6_input.c:297"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: sctp: se rompe si skb_header_pointer devuelve NULL en sctp_rcv_ootb. Siempre debemos verificar si el retorno de skb_header_pointer es NULL antes de usarlo; de lo contrario, puede causar null-ptr-deref, como inform\u00f3 syzbot: KASAN : null-ptr-deref en el rango [0x0000000000000000-0x0000000000000007] RIP: 0010:sctp_rcv_ootb net/sctp/input.c:705 [en l\u00ednea] RIP: 0010:sctp_rcv+0x1d84/0x3220 net/sctp/input .c:196 Seguimiento de llamadas :  sctp6_rcv+0x38/0x60 net/sctp/ipv6.c:1109 ip6_protocol_deliver_rcu+0x2e9/0x1ca0 net/ipv6/ip6_input.c:422 ip6_input_finish+0x62/0x170 net/ipv6/ip6_input.c:463 incluir/linux /netfilter.h:307 [en l\u00ednea] NF_HOOK include/linux/netfilter.h:301 [en l\u00ednea] ip6_input+0x9c/0xd0 net/ipv6/ip6_input.c:472 dst_input include/net/dst.h:460 [en l\u00ednea] ip6_rcv_finish net/ipv6/ip6_input.c:76 [en l\u00ednea] NF_HOOK include/linux/netfilter.h:307 [en l\u00ednea] NF_HOOK include/linux/netfilter.h:301 [en l\u00ednea] ipv6_rcv+0x28c/0x3c0 net/ipv6/ip6_input.c :297"
    }
  ],
  "id": "CVE-2021-47397",
  "lastModified": "2024-12-24T16:06:56.063",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2024-05-21T15:15:25.017",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/77bc7dcf0fcc1519341a91788d7a2914fcfddf6d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/8180611c238e11676612eb2a9828b1c7a3a4d77b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/8c630a7b4f9dec63f08bd881ab77984a724a5124"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/9c6591ae8e63f93c895ad5e2703c36c548aac997"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/ec018021cf445abbe8e2f3e2a7f1dcc813cb8ea1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/f7e745f8e94492a8ac0b0a26e25f2b19d342918f"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/77bc7dcf0fcc1519341a91788d7a2914fcfddf6d"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/8180611c238e11676612eb2a9828b1c7a3a4d77b"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/8c630a7b4f9dec63f08bd881ab77984a724a5124"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
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      "url": "https://git.kernel.org/stable/c/9c6591ae8e63f93c895ad5e2703c36c548aac997"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/ec018021cf445abbe8e2f3e2a7f1dcc813cb8ea1"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/f7e745f8e94492a8ac0b0a26e25f2b19d342918f"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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