FKIE_CVE-2022-48785

Vulnerability from fkie_nvd - Published: 2024-07-16 12:15 - Updated: 2026-08-04 10:17
Severity
8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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: ipv6: mcast: use rcu-safe version of ipv6_get_lladdr() Some time ago 8965779d2c0e ("ipv6,mcast: always hold idev->lock before mca_lock") switched ipv6_get_lladdr() to __ipv6_get_lladdr(), which is rcu-unsafe version. That was OK, because idev->lock was held for these codepaths. In 88e2ca308094 ("mld: convert ifmcaddr6 to RCU") these external locks were removed, so we probably need to restore the original rcu-safe call. Otherwise, we occasionally get a machine crashed/stalled with the following in dmesg: [ 3405.966610][T230589] general protection fault, probably for non-canonical address 0xdead00000000008c: 0000 [#1] SMP NOPTI [ 3405.982083][T230589] CPU: 44 PID: 230589 Comm: kworker/44:3 Tainted: G O 5.15.19-cloudflare-2022.2.1 #1 [ 3405.998061][T230589] Hardware name: SUPA-COOL-SERV [ 3406.009552][T230589] Workqueue: mld mld_ifc_work [ 3406.017224][T230589] RIP: 0010:__ipv6_get_lladdr+0x34/0x60 [ 3406.025780][T230589] Code: 57 10 48 83 c7 08 48 89 e5 48 39 d7 74 3e 48 8d 82 38 ff ff ff eb 13 48 8b 90 d0 00 00 00 48 8d 82 38 ff ff ff 48 39 d7 74 22 <66> 83 78 32 20 77 1b 75 e4 89 ca 23 50 2c 75 dd 48 8b 50 08 48 8b [ 3406.055748][T230589] RSP: 0018:ffff94e4b3fc3d10 EFLAGS: 00010202 [ 3406.065617][T230589] RAX: dead00000000005a RBX: ffff94e4b3fc3d30 RCX: 0000000000000040 [ 3406.077477][T230589] RDX: dead000000000122 RSI: ffff94e4b3fc3d30 RDI: ffff8c3a31431008 [ 3406.089389][T230589] RBP: ffff94e4b3fc3d10 R08: 0000000000000000 R09: 0000000000000000 [ 3406.101445][T230589] R10: ffff8c3a31430000 R11: 000000000000000b R12: ffff8c2c37887100 [ 3406.113553][T230589] R13: ffff8c3a39537000 R14: 00000000000005dc R15: ffff8c3a31431000 [ 3406.125730][T230589] FS: 0000000000000000(0000) GS:ffff8c3b9fc80000(0000) knlGS:0000000000000000 [ 3406.138992][T230589] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3406.149895][T230589] CR2: 00007f0dfea1db60 CR3: 000000387b5f2000 CR4: 0000000000350ee0 [ 3406.162421][T230589] Call Trace: [ 3406.170235][T230589] <TASK> [ 3406.177736][T230589] mld_newpack+0xfe/0x1a0 [ 3406.186686][T230589] add_grhead+0x87/0xa0 [ 3406.195498][T230589] add_grec+0x485/0x4e0 [ 3406.204310][T230589] ? newidle_balance+0x126/0x3f0 [ 3406.214024][T230589] mld_ifc_work+0x15d/0x450 [ 3406.223279][T230589] process_one_work+0x1e6/0x380 [ 3406.232982][T230589] worker_thread+0x50/0x3a0 [ 3406.242371][T230589] ? rescuer_thread+0x360/0x360 [ 3406.252175][T230589] kthread+0x127/0x150 [ 3406.261197][T230589] ? set_kthread_struct+0x40/0x40 [ 3406.271287][T230589] ret_from_fork+0x22/0x30 [ 3406.280812][T230589] </TASK> [ 3406.288937][T230589] Modules linked in: ... [last unloaded: kheaders] [ 3406.476714][T230589] ---[ end trace 3525a7655f2f3b9e ]---
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/26394fc118d6115390bd5b3a0fb17096271da227Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/27f567c84f446048670376827e356f9c92033bf9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3e11ef1903cf6c2fba35594b193a3570854d9e9ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c49c69dc9f3e699fa3150aca7b189eea707b4047
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/26394fc118d6115390bd5b3a0fb17096271da227Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/27f567c84f446048670376827e356f9c92033bf9Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/3e11ef1903cf6c2fba35594b193a3570854d9e9ePatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.17
linux linux_kernel 5.17
linux linux_kernel 5.17
linux linux_kernel 5.17
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/net/addrconf.h",
            "net/ipv6/addrconf.c",
            "net/ipv6/mcast.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c49c69dc9f3e699fa3150aca7b189eea707b4047",
              "status": "affected",
              "version": "676457fe5ad19517a8b21d1c3f4d23512118f6a3",
              "versionType": "git"
            },
            {
              "lessThan": "3e11ef1903cf6c2fba35594b193a3570854d9e9e",
              "status": "affected",
              "version": "88e2ca3080947fe22eb520c1f8231e79a105d011",
              "versionType": "git"
            },
            {
              "lessThan": "27f567c84f446048670376827e356f9c92033bf9",
              "status": "affected",
              "version": "88e2ca3080947fe22eb520c1f8231e79a105d011",
              "versionType": "git"
            },
            {
              "lessThan": "26394fc118d6115390bd5b3a0fb17096271da227",
              "status": "affected",
              "version": "88e2ca3080947fe22eb520c1f8231e79a105d011",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "include/net/addrconf.h",
            "net/ipv6/addrconf.c",
            "net/ipv6/mcast.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.13"
            },
            {
              "lessThan": "5.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.25",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.16.*",
              "status": "unaffected",
              "version": "5.16.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.17",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6467CE52-5FC4-4C7B-A594-75503B1F51B0",
              "versionEndExcluding": "5.15.25",
              "versionStartIncluding": "5.13",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0D327234-5D4A-43DC-A6DF-BCA0CEBEC039",
              "versionEndExcluding": "5.16.11",
              "versionStartIncluding": "5.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "7BD5F8D9-54FA-4CB0-B4F0-CB0471FDDB2D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "E6E34B23-78B4-4516-9BD8-61B33F4AC49A",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.17:rc3:*:*:*:*:*:*",
              "matchCriteriaId": "C030FA3D-03F4-4FB9-9DBF-D08E5CAC51AA",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:5.17:rc4:*:*:*:*:*:*",
              "matchCriteriaId": "B2D2677C-5389-4AE9-869D-0F881E80D923",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: mcast: use rcu-safe version of ipv6_get_lladdr()\n\nSome time ago 8965779d2c0e (\"ipv6,mcast: always hold idev-\u003elock before mca_lock\")\nswitched ipv6_get_lladdr() to __ipv6_get_lladdr(), which is rcu-unsafe\nversion. That was OK, because idev-\u003elock was held for these codepaths.\n\nIn 88e2ca308094 (\"mld: convert ifmcaddr6 to RCU\") these external locks were\nremoved, so we probably need to restore the original rcu-safe call.\n\nOtherwise, we occasionally get a machine crashed/stalled with the following\nin dmesg:\n\n[ 3405.966610][T230589] general protection fault, probably for non-canonical address 0xdead00000000008c: 0000 [#1] SMP NOPTI\n[ 3405.982083][T230589] CPU: 44 PID: 230589 Comm: kworker/44:3 Tainted: G           O      5.15.19-cloudflare-2022.2.1 #1\n[ 3405.998061][T230589] Hardware name: SUPA-COOL-SERV\n[ 3406.009552][T230589] Workqueue: mld mld_ifc_work\n[ 3406.017224][T230589] RIP: 0010:__ipv6_get_lladdr+0x34/0x60\n[ 3406.025780][T230589] Code: 57 10 48 83 c7 08 48 89 e5 48 39 d7 74 3e 48 8d 82 38 ff ff ff eb 13 48 8b 90 d0 00 00 00 48 8d 82 38 ff ff ff 48 39 d7 74 22 \u003c66\u003e 83 78 32 20 77 1b 75 e4 89 ca 23 50 2c 75 dd 48 8b 50 08 48 8b\n[ 3406.055748][T230589] RSP: 0018:ffff94e4b3fc3d10 EFLAGS: 00010202\n[ 3406.065617][T230589] RAX: dead00000000005a RBX: ffff94e4b3fc3d30 RCX: 0000000000000040\n[ 3406.077477][T230589] RDX: dead000000000122 RSI: ffff94e4b3fc3d30 RDI: ffff8c3a31431008\n[ 3406.089389][T230589] RBP: ffff94e4b3fc3d10 R08: 0000000000000000 R09: 0000000000000000\n[ 3406.101445][T230589] R10: ffff8c3a31430000 R11: 000000000000000b R12: ffff8c2c37887100\n[ 3406.113553][T230589] R13: ffff8c3a39537000 R14: 00000000000005dc R15: ffff8c3a31431000\n[ 3406.125730][T230589] FS:  0000000000000000(0000) GS:ffff8c3b9fc80000(0000) knlGS:0000000000000000\n[ 3406.138992][T230589] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 3406.149895][T230589] CR2: 00007f0dfea1db60 CR3: 000000387b5f2000 CR4: 0000000000350ee0\n[ 3406.162421][T230589] Call Trace:\n[ 3406.170235][T230589]  \u003cTASK\u003e\n[ 3406.177736][T230589]  mld_newpack+0xfe/0x1a0\n[ 3406.186686][T230589]  add_grhead+0x87/0xa0\n[ 3406.195498][T230589]  add_grec+0x485/0x4e0\n[ 3406.204310][T230589]  ? newidle_balance+0x126/0x3f0\n[ 3406.214024][T230589]  mld_ifc_work+0x15d/0x450\n[ 3406.223279][T230589]  process_one_work+0x1e6/0x380\n[ 3406.232982][T230589]  worker_thread+0x50/0x3a0\n[ 3406.242371][T230589]  ? rescuer_thread+0x360/0x360\n[ 3406.252175][T230589]  kthread+0x127/0x150\n[ 3406.261197][T230589]  ? set_kthread_struct+0x40/0x40\n[ 3406.271287][T230589]  ret_from_fork+0x22/0x30\n[ 3406.280812][T230589]  \u003c/TASK\u003e\n[ 3406.288937][T230589] Modules linked in: ... [last unloaded: kheaders]\n[ 3406.476714][T230589] ---[ end trace 3525a7655f2f3b9e ]---"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ipv6: mcast: use la versi\u00f3n rcu-safe de ipv6_get_lladdr() Hace alg\u00fan tiempo 8965779d2c0e (\"ipv6,mcast: siempre mantenga presionado idev-\u0026gt;lock antes de mca_lock\") cambi\u00f3 ipv6_get_lladdr() a __ipv6_get_lladdr(), que es una versi\u00f3n insegura para rcu. Eso estuvo bien, porque se mantuvo idev-\u0026gt;lock para estas rutas de c\u00f3digo. En 88e2ca308094 (\"mld: convert ifmcaddr6 to RCU\") se eliminaron estos bloqueos externos, por lo que probablemente necesitemos restaurar la llamada rcu-safe original. De lo contrario, ocasionalmente obtenemos una m\u00e1quina que falla o se bloquea con lo siguiente en dmesg: [3405.966610][T230589] falla de protecci\u00f3n general, probablemente para la direcci\u00f3n no can\u00f3nica 0xdead00000000008c: 0000 [#1] SMP NOPTI [3405.982083][T230589] CPU: 44 PID: 230589 Comm: kworker/44:3 Tainted: GO 5.15.19-cloudflare-2022.2.1 #1 [ 3405.998061][T230589] Nombre de hardware: SUPA-COOL-SERV [ 3406.009552][T230589] Cola de trabajo: mld mld_ifc_work [ 3406 .017224 ][T230589] RIP: 0010:__ipv6_get_lladdr+0x34/0x60 [ 3406.025780][T230589] C\u00f3digo: 57 10 48 83 c7 08 48 89 e5 48 39 d7 74 3e 48 8d 82 38 ff ff ff eb 13 48 8b 90 d0 00 00 00 48 8d 82 38 ff ff ff 48 39 d7 74 22 \u0026lt;66\u0026gt; 83 78 32 20 77 1b 75 e4 89 ca 23 50 2c 75 dd 48 8b 50 08 48 8b [ 3406.055748][T230589] 0018:ffff94e4b3fc3d10 EFLAGS: 00010202 [ 3406.065617][T230589] RAX: muerto00000000005a RBX: ffff94e4b3fc3d30 RCX: 00000000000000040 [ 3406.077477][T230589] RDX: muerto0000000001 22 RSI: ffff94e4b3fc3d30 RDI: ffff8c3a31431008 [ 3406.089389][T230589] RBP: ffff94e4b3fc3d10 R08: 0000000000000000 R09: 0000000000000000000000 [ 34 06.101445][ T230589] R10: ffff8c3a31430000 R11: 000000000000000b R12: ffff8c2c37887100 [ 3406.113553][T230589] R13: ffff8c3a39537000 R14: 0000000000 0005dc R15: ffff8c3a31431000 [ 3406.125730][T230589] FS: 0000000000000000(0000) GS:ffff8c3b9fc80000(0000) knlGS:0000000000000000 [ 3406.1 38992] [T230589] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3406.149895][T230589] CR2: 00007f0dfea1db60 CR3: 000000387b5f2000 CR4: 0350ee0 [ 3406.162421][T230589] Seguimiento de llamadas: [ 3406.170235][T230589]  [ 3406.177736 ] [T230589] Mld_newpack+0xfe/0x1a0 [3406.186686] [T230589] add_grhead+0x87/0xa0 [3406.195498] [T230589] add_grec+0x485/0x4e0 [3406.204310] newidle_balance+0x126/0x3f0 [ 3406.214024][T230589] mld_ifc_work+0x15d/0x450 [ 3406.223279][T230589] Process_one_work+0x1e6/0x380 [ 3406.232982][T230589] +0x50/0x3a0 [ 3406.242371][T230589] ? hilo_rescate+0x360/0x360 [ 3406.252175][T230589] kthread+0x127/0x150 [ 3406.261197][T230589] ? set_kthread_struct+0x40/0x40 [ 3406.271287][T230589] ret_from_fork+0x22/0x30 [ 3406.280812][T230589]  [ 3406.288937][T230589] M\u00f3dulos vinculados en: ... [\u00faltima descarga: kheaders] 3406.476714][T230589 ] ---[ final de seguimiento 3525a7655f2f3b9e ]---"
    }
  ],
  "id": "CVE-2022-48785",
  "lastModified": "2026-08-04T10:17:20.610",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "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"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2022-48785",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-10T17:00:04.966004Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-07-16T12:15:03.493",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/26394fc118d6115390bd5b3a0fb17096271da227"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/27f567c84f446048670376827e356f9c92033bf9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/3e11ef1903cf6c2fba35594b193a3570854d9e9e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c49c69dc9f3e699fa3150aca7b189eea707b4047"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/26394fc118d6115390bd5b3a0fb17096271da227"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/27f567c84f446048670376827e356f9c92033bf9"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/3e11ef1903cf6c2fba35594b193a3570854d9e9e"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-667"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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