fkie_cve-2022-50243
Vulnerability from fkie_nvd
Published
2025-09-15 14:15
Modified
2025-11-24 20:04
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: sctp: handle the error returned from sctp_auth_asoc_init_active_key When it returns an error from sctp_auth_asoc_init_active_key(), the active_key is actually not updated. The old sh_key will be freeed while it's still used as active key in asoc. Then an use-after-free will be triggered when sending patckets, as found by syzbot: sctp_auth_shkey_hold+0x22/0xa0 net/sctp/auth.c:112 sctp_set_owner_w net/sctp/socket.c:132 [inline] sctp_sendmsg_to_asoc+0xbd5/0x1a20 net/sctp/socket.c:1863 sctp_sendmsg+0x1053/0x1d50 net/sctp/socket.c:2025 inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:819 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:734 This patch is to fix it by not replacing the sh_key when it returns errors from sctp_auth_asoc_init_active_key() in sctp_auth_set_key(). For sctp_auth_set_active_key(), old active_key_id will be set back to asoc->active_key_id when the same thing happens.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/022152aaebe116a25c39818a07e175a8cd3c1e11Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0f90099d18e3abdc01babf686f41f63fe04939c1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/19d636b663e0e92951bba5fced929ca7fd25c552Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/382ff44716603a54f5fd238ddec6a2468e217612Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3b0fcf5e29c0940e1169ce9c44f73edd98bdf12dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b8fa99a3a11bdd77fef6b4a97f1021eb30b5ba40Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f65955340e0044f5c41ac799a01698ac7dee8a4ePatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.14
linux linux_kernel 5.14
linux linux_kernel 5.14
linux linux_kernel 5.14
linux linux_kernel 5.14
linux linux_kernel 5.14


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "DCE54A80-B2F4-48C8-B1B8-5FC1ECF726F1",
              "versionEndExcluding": "4.19.262",
              "versionStartIncluding": "4.19.199",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D7109D38-A66C-4EDF-8C34-4D04BAEA0FF9",
              "versionEndExcluding": "5.4.220",
              "versionStartIncluding": "5.4.136",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BDEBB292-0B5D-4A72-AFAF-420814880C6C",
              "versionEndExcluding": "5.10.150",
              "versionStartIncluding": "5.10.54",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "3FCF5994-AD9A-4278-8BF1-BC9274834795",
              "versionEndExcluding": "5.14",
              "versionStartIncluding": "5.13.6",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "39463598-6EF5-4552-9079-229E83AB7C80",
              "versionEndExcluding": "5.15.75",
              "versionStartIncluding": "5.14.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "19B4C3A4-E5C3-41DC-BB14-BE72858E7D35",
              "versionEndExcluding": "5.19.17",
              "versionStartIncluding": "5.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5BCD8201-B847-4442-B894-70D430128DEF",
              "versionEndExcluding": "6.0.3",
              "versionStartIncluding": "6.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.14:-:*:*:*:*:*:*",
              "matchCriteriaId": "6A05198E-F8FA-4517-8D0E-8C95066AED38",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.14:rc3:*:*:*:*:*:*",
              "matchCriteriaId": "D185CF67-7E4A-4154-93DB-CE379C67DB56",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.14:rc4:*:*:*:*:*:*",
              "matchCriteriaId": "D1DA0AF6-02F4-47C7-A318-8C006ED0C665",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.14:rc5:*:*:*:*:*:*",
              "matchCriteriaId": "49DD30B1-8C99-4C38-A66B-CAB3827BEE8A",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.14:rc6:*:*:*:*:*:*",
              "matchCriteriaId": "15013998-4AF0-4CDC-AB13-829ECD8A8E66",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.14:rc7:*:*:*:*:*:*",
              "matchCriteriaId": "376A25CF-C05B-48F1-99B1-8FB0314A8E06",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: handle the error returned from sctp_auth_asoc_init_active_key\n\nWhen it returns an error from sctp_auth_asoc_init_active_key(), the\nactive_key is actually not updated. The old sh_key will be freeed\nwhile it\u0027s still used as active key in asoc. Then an use-after-free\nwill be triggered when sending patckets, as found by syzbot:\n\n  sctp_auth_shkey_hold+0x22/0xa0 net/sctp/auth.c:112\n  sctp_set_owner_w net/sctp/socket.c:132 [inline]\n  sctp_sendmsg_to_asoc+0xbd5/0x1a20 net/sctp/socket.c:1863\n  sctp_sendmsg+0x1053/0x1d50 net/sctp/socket.c:2025\n  inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:819\n  sock_sendmsg_nosec net/socket.c:714 [inline]\n  sock_sendmsg+0xcf/0x120 net/socket.c:734\n\nThis patch is to fix it by not replacing the sh_key when it returns\nerrors from sctp_auth_asoc_init_active_key() in sctp_auth_set_key().\nFor sctp_auth_set_active_key(), old active_key_id will be set back\nto asoc-\u003eactive_key_id when the same thing happens."
    }
  ],
  "id": "CVE-2022-50243",
  "lastModified": "2025-11-24T20:04:28.100",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-09-15T14:15:34.620",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/022152aaebe116a25c39818a07e175a8cd3c1e11"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/0f90099d18e3abdc01babf686f41f63fe04939c1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/19d636b663e0e92951bba5fced929ca7fd25c552"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/382ff44716603a54f5fd238ddec6a2468e217612"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/3b0fcf5e29c0940e1169ce9c44f73edd98bdf12d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/b8fa99a3a11bdd77fef6b4a97f1021eb30b5ba40"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/f65955340e0044f5c41ac799a01698ac7dee8a4e"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




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.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • 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.