Vulnerability-Lookup

FKIE_CVE-2025-21719

Vulnerability from fkie_nvd - Published: 2025-02-27 02:15 - Updated: 2026-07-30 06:20

Severity

7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: ipmr: do not call mr_mfc_uses_dev() for unres entries syzbot found that calling mr_mfc_uses_dev() for unres entries would crash [1], because c->mfc_un.res.minvif / c->mfc_un.res.maxvif alias to "struct sk_buff_head unresolved", which contain two pointers. This code never worked, lets remove it. [1] Unable to handle kernel paging request at virtual address ffff5fff2d536613 KASAN: maybe wild-memory-access in range [0xfffefff96a9b3098-0xfffefff96a9b309f] Modules linked in: CPU: 1 UID: 0 PID: 7321 Comm: syz.0.16 Not tainted 6.13.0-rc7-syzkaller-g1950a0af2d55 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : mr_mfc_uses_dev net/ipv4/ipmr_base.c:290 [inline] pc : mr_table_dump+0x5a4/0x8b0 net/ipv4/ipmr_base.c:334 lr : mr_mfc_uses_dev net/ipv4/ipmr_base.c:289 [inline] lr : mr_table_dump+0x694/0x8b0 net/ipv4/ipmr_base.c:334 Call trace: mr_mfc_uses_dev net/ipv4/ipmr_base.c:290 [inline] (P) mr_table_dump+0x5a4/0x8b0 net/ipv4/ipmr_base.c:334 (P) mr_rtm_dumproute+0x254/0x454 net/ipv4/ipmr_base.c:382 ipmr_rtm_dumproute+0x248/0x4b4 net/ipv4/ipmr.c:2648 rtnl_dump_all+0x2e4/0x4e8 net/core/rtnetlink.c:4327 rtnl_dumpit+0x98/0x1d0 net/core/rtnetlink.c:6791 netlink_dump+0x4f0/0xbc0 net/netlink/af_netlink.c:2317 netlink_recvmsg+0x56c/0xe64 net/netlink/af_netlink.c:1973 sock_recvmsg_nosec net/socket.c:1033 [inline] sock_recvmsg net/socket.c:1055 [inline] sock_read_iter+0x2d8/0x40c net/socket.c:1125 new_sync_read fs/read_write.c:484 [inline] vfs_read+0x740/0x970 fs/read_write.c:565 ksys_read+0x15c/0x26c fs/read_write.c:708

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/15a901361ec3fb1c393f91880e1cbf24ec0a88bd	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/26bb7d991f04eeef47dfad23e533834995c26f7a	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/53df27fd38f84bd3cd6b004eb4ff3c4903114f1d	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/547ef7e8cbb98f966c8719a3e15d4e078aaa9b47	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/57177c5f47a8da852f8d76cf6945cf803f8bb9e5	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/71a0fcb68c0a5f3ec912b540cd5d72148e6ee5f1	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a099834a51ccf9bbba3de86a251b3433539abfde	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b379b3162ff55a70464c6a934ae9bf0497478a62	Patch
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
0b142b55-0307-4c5a-b3c9-f314f3fb7c5e	https://cert-portal.siemens.com/productcert/html/ssa-265688.html

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	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ipv4/ipmr_base.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "71a0fcb68c0a5f3ec912b540cd5d72148e6ee5f1",
              "status": "affected",
              "version": "cb167893f41e21e6bd283d78e53489289dc0592d",
              "versionType": "git"
            },
            {
              "lessThan": "53df27fd38f84bd3cd6b004eb4ff3c4903114f1d",
              "status": "affected",
              "version": "cb167893f41e21e6bd283d78e53489289dc0592d",
              "versionType": "git"
            },
            {
              "lessThan": "547ef7e8cbb98f966c8719a3e15d4e078aaa9b47",
              "status": "affected",
              "version": "cb167893f41e21e6bd283d78e53489289dc0592d",
              "versionType": "git"
            },
            {
              "lessThan": "57177c5f47a8da852f8d76cf6945cf803f8bb9e5",
              "status": "affected",
              "version": "cb167893f41e21e6bd283d78e53489289dc0592d",
              "versionType": "git"
            },
            {
              "lessThan": "b379b3162ff55a70464c6a934ae9bf0497478a62",
              "status": "affected",
              "version": "cb167893f41e21e6bd283d78e53489289dc0592d",
              "versionType": "git"
            },
            {
              "lessThan": "a099834a51ccf9bbba3de86a251b3433539abfde",
              "status": "affected",
              "version": "cb167893f41e21e6bd283d78e53489289dc0592d",
              "versionType": "git"
            },
            {
              "lessThan": "26bb7d991f04eeef47dfad23e533834995c26f7a",
              "status": "affected",
              "version": "cb167893f41e21e6bd283d78e53489289dc0592d",
              "versionType": "git"
            },
            {
              "lessThan": "15a901361ec3fb1c393f91880e1cbf24ec0a88bd",
              "status": "affected",
              "version": "cb167893f41e21e6bd283d78e53489289dc0592d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/ipv4/ipmr_base.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.20"
            },
            {
              "lessThan": "4.20",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.291",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.235",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.179",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.129",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.76",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.14",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "affectedData": [
        {
          "defaultStatus": "unknown",
          "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
          "vendor": "Siemens",
          "versions": [
            {
              "lessThan": "*",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0621B0C8-6B2C-4585-A573-E22908F29576",
              "versionEndExcluding": "5.4.291",
              "versionStartIncluding": "4.20",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "545121FA-DE31-4154-9446-C2000FB4104D",
              "versionEndExcluding": "5.10.235",
              "versionStartIncluding": "5.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C708062C-4E1B-465F-AE6D-C09C46400875",
              "versionEndExcluding": "5.15.179",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "2DA5009C-C9B9-4A1D-9B96-78427E8F232C",
              "versionEndExcluding": "6.1.129",
              "versionStartIncluding": "5.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A6D70701-9CB6-4222-A957-00A419878993",
              "versionEndExcluding": "6.6.76",
              "versionStartIncluding": "6.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "2897389C-A8C3-4D69-90F2-E701B3D66373",
              "versionEndExcluding": "6.12.13",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6D4116B1-1BFD-4F23-BA84-169CC05FC5A3",
              "versionEndExcluding": "6.13.2",
              "versionStartIncluding": "6.13",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipmr: do not call mr_mfc_uses_dev() for unres entries\n\nsyzbot found that calling mr_mfc_uses_dev() for unres entries\nwould crash [1], because c-\u003emfc_un.res.minvif / c-\u003emfc_un.res.maxvif\nalias to \"struct sk_buff_head unresolved\", which contain two pointers.\n\nThis code never worked, lets remove it.\n\n[1]\nUnable to handle kernel paging request at virtual address ffff5fff2d536613\nKASAN: maybe wild-memory-access in range [0xfffefff96a9b3098-0xfffefff96a9b309f]\nModules linked in:\nCPU: 1 UID: 0 PID: 7321 Comm: syz.0.16 Not tainted 6.13.0-rc7-syzkaller-g1950a0af2d55 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\npstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n pc : mr_mfc_uses_dev net/ipv4/ipmr_base.c:290 [inline]\n pc : mr_table_dump+0x5a4/0x8b0 net/ipv4/ipmr_base.c:334\n lr : mr_mfc_uses_dev net/ipv4/ipmr_base.c:289 [inline]\n lr : mr_table_dump+0x694/0x8b0 net/ipv4/ipmr_base.c:334\nCall trace:\n  mr_mfc_uses_dev net/ipv4/ipmr_base.c:290 [inline] (P)\n  mr_table_dump+0x5a4/0x8b0 net/ipv4/ipmr_base.c:334 (P)\n  mr_rtm_dumproute+0x254/0x454 net/ipv4/ipmr_base.c:382\n  ipmr_rtm_dumproute+0x248/0x4b4 net/ipv4/ipmr.c:2648\n  rtnl_dump_all+0x2e4/0x4e8 net/core/rtnetlink.c:4327\n  rtnl_dumpit+0x98/0x1d0 net/core/rtnetlink.c:6791\n  netlink_dump+0x4f0/0xbc0 net/netlink/af_netlink.c:2317\n  netlink_recvmsg+0x56c/0xe64 net/netlink/af_netlink.c:1973\n  sock_recvmsg_nosec net/socket.c:1033 [inline]\n  sock_recvmsg net/socket.c:1055 [inline]\n  sock_read_iter+0x2d8/0x40c net/socket.c:1125\n  new_sync_read fs/read_write.c:484 [inline]\n  vfs_read+0x740/0x970 fs/read_write.c:565\n  ksys_read+0x15c/0x26c fs/read_write.c:708"
    },
    {
      "lang": "es",
      "value": "En el n\u00facleo de Linux, se ha resuelto la siguiente vulnerabilidad: ipmr: no llamar a mr_mfc_uses_dev() para entradas no resueltas syzbot descubri\u00f3 que llamar a mr_mfc_uses_dev() para entradas no resueltas provocar\u00eda un bloqueo [1], porque c-\u0026gt;mfc_un.res.minvif / c-\u0026gt;mfc_un.res.maxvif son alias de \"struct sk_buff_head unresolved\", que contienen dos punteros. Este c\u00f3digo nunca funcion\u00f3, elimin\u00e9moslo. [1] No se puede manejar la solicitud de paginaci\u00f3n del kernel en la direcci\u00f3n virtual ffff5fff2d536613 KASAN: tal vez un acceso a memoria salvaje en el rango [0xfffefff96a9b3098-0xfffefff96a9b309f] M\u00f3dulos vinculados: CPU: 1 UID: 0 PID: 7321 Comm: syz.0.16 No contaminado 6.13.0-rc7-syzkaller-g1950a0af2d55 #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 13/09/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : mr_mfc_uses_dev net/ipv4/ipmr_base.c:290 [en l\u00ednea] pc : mr_table_dump+0x5a4/0x8b0 net/ipv4/ipmr_base.c:334 lr : mr_mfc_uses_dev net/ipv4/ipmr_base.c:289 [en l\u00ednea] lr : mr_table_dump+0x694/0x8b0 net/ipv4/ipmr_base.c:334 Rastreo de llamadas: mr_mfc_uses_dev net/ipv4/ipmr_base.c:290 [en l\u00ednea] (P) mr_table_dump+0x5a4/0x8b0 net/ipv4/ipmr_base.c:334 (P) mr_rtm_dumproute+0x254/0x454 net/ipv4/ipmr_base.c:382 ipmr_rtm_dumproute+0x248/0x4b4 net/ipv4/ipmr.c:2648 rtnl_dump_all+0x2e4/0x4e8 net/core/rtnetlink.c:4327 rtnl_dumpit+0x98/0x1d0 net/core/rtnetlink.c:6791 netlink_dump+0x4f0/0xbc0 net/netlink/af_netlink.c:2317 netlink_recvmsg+0x56c/0xe64 net/netlink/af_netlink.c:1973 sock_recvmsg_nosec net/socket.c:1033 [en l\u00ednea] sock_recvmsg net/socket.c:1055 [en l\u00ednea] sock_read_iter+0x2d8/0x40c net/socket.c:1125 new_sync_read fs/read_write.c:484 [en l\u00ednea] vfs_read+0x740/0x970 fs/read_write.c:565 ksys_read+0x15c/0x26c fs/read_write.c:708"
    }
  ],
  "id": "CVE-2025-21719",
  "lastModified": "2026-07-30T06:20:39.593",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.2,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-02-27T02:15:15.580",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/15a901361ec3fb1c393f91880e1cbf24ec0a88bd"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/26bb7d991f04eeef47dfad23e533834995c26f7a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/53df27fd38f84bd3cd6b004eb4ff3c4903114f1d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/547ef7e8cbb98f966c8719a3e15d4e078aaa9b47"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/57177c5f47a8da852f8d76cf6945cf803f8bb9e5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/71a0fcb68c0a5f3ec912b540cd5d72148e6ee5f1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a099834a51ccf9bbba3de86a251b3433539abfde"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/b379b3162ff55a70464c6a934ae9bf0497478a62"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"
    },
    {
      "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2025-21719 (GCVE-0-2025-21719)

Vulnerability from cvelistv5 – Published: 2025-02-27 02:07 – Updated: 2026-08-05 11:53

Title

ipmr: do not call mr_mfc_uses_dev() for unres entries

Summary

Severity

7.1 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Assigner

Linux mitre root

References

11 references

URL	Tags
https://git.kernel.org/stable/c/71a0fcb68c0a5f3ec…
https://git.kernel.org/stable/c/53df27fd38f84bd3c…
https://git.kernel.org/stable/c/547ef7e8cbb98f966…
https://git.kernel.org/stable/c/57177c5f47a8da852…
https://git.kernel.org/stable/c/b379b3162ff55a704…
https://git.kernel.org/stable/c/a099834a51ccf9bbb…
https://git.kernel.org/stable/c/26bb7d991f04eeef4…
https://git.kernel.org/stable/c/15a901361ec3fb1c3…
https://lists.debian.org/debian-lts-announce/2025…
https://lists.debian.org/debian-lts-announce/2025…
https://cert-portal.siemens.com/productcert/html/…

Impacted products

3 products

Vendor	Product	Version
Linux	Linux	Affected: cb167893f41e21e6bd283d78e53489289dc0592d , < 71a0fcb68c0a5f3ec912b540cd5d72148e6ee5f1 (git) Affected: cb167893f41e21e6bd283d78e53489289dc0592d , < 53df27fd38f84bd3cd6b004eb4ff3c4903114f1d (git) Affected: cb167893f41e21e6bd283d78e53489289dc0592d , < 547ef7e8cbb98f966c8719a3e15d4e078aaa9b47 (git) Affected: cb167893f41e21e6bd283d78e53489289dc0592d , < 57177c5f47a8da852f8d76cf6945cf803f8bb9e5 (git) Affected: cb167893f41e21e6bd283d78e53489289dc0592d , < b379b3162ff55a70464c6a934ae9bf0497478a62 (git) Affected: cb167893f41e21e6bd283d78e53489289dc0592d , < a099834a51ccf9bbba3de86a251b3433539abfde (git) Affected: cb167893f41e21e6bd283d78e53489289dc0592d , < 26bb7d991f04eeef47dfad23e533834995c26f7a (git) Affected: cb167893f41e21e6bd283d78e53489289dc0592d , < 15a901361ec3fb1c393f91880e1cbf24ec0a88bd (git)
Linux	Linux	Affected: 4.20 Unaffected: 0 , < 4.20 (semver) Unaffected: 5.4.291 , ≤ 5.4.* (semver) Unaffected: 5.10.235 , ≤ 5.10.* (semver) Unaffected: 5.15.179 , ≤ 5.15.* (semver) Unaffected: 6.1.129 , ≤ 6.1.* (semver) Unaffected: 6.6.76 , ≤ 6.6.* (semver) Unaffected: 6.12.13 , ≤ 6.12.* (semver) Unaffected: 6.13.2 , ≤ 6.13.* (semver) Unaffected: 6.14 , ≤ * (original_commit_for_fix)
Siemens	SIMATIC S7-1500 TM MFP - GNU/Linux subsystem	Affected: 0 , < * (custom)

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T19:36:16.326Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "affected": [
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-12T12:03:27.250Z",
          "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
          "shortName": "siemens-SADP"
        },
        "references": [
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
          }
        ],
        "x_adpType": "supplier"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ipv4/ipmr_base.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "71a0fcb68c0a5f3ec912b540cd5d72148e6ee5f1",
              "status": "affected",
              "version": "cb167893f41e21e6bd283d78e53489289dc0592d",
              "versionType": "git"
            },
            {
              "lessThan": "53df27fd38f84bd3cd6b004eb4ff3c4903114f1d",
              "status": "affected",
              "version": "cb167893f41e21e6bd283d78e53489289dc0592d",
              "versionType": "git"
            },
            {
              "lessThan": "547ef7e8cbb98f966c8719a3e15d4e078aaa9b47",
              "status": "affected",
              "version": "cb167893f41e21e6bd283d78e53489289dc0592d",
              "versionType": "git"
            },
            {
              "lessThan": "57177c5f47a8da852f8d76cf6945cf803f8bb9e5",
              "status": "affected",
              "version": "cb167893f41e21e6bd283d78e53489289dc0592d",
              "versionType": "git"
            },
            {
              "lessThan": "b379b3162ff55a70464c6a934ae9bf0497478a62",
              "status": "affected",
              "version": "cb167893f41e21e6bd283d78e53489289dc0592d",
              "versionType": "git"
            },
            {
              "lessThan": "a099834a51ccf9bbba3de86a251b3433539abfde",
              "status": "affected",
              "version": "cb167893f41e21e6bd283d78e53489289dc0592d",
              "versionType": "git"
            },
            {
              "lessThan": "26bb7d991f04eeef47dfad23e533834995c26f7a",
              "status": "affected",
              "version": "cb167893f41e21e6bd283d78e53489289dc0592d",
              "versionType": "git"
            },
            {
              "lessThan": "15a901361ec3fb1c393f91880e1cbf24ec0a88bd",
              "status": "affected",
              "version": "cb167893f41e21e6bd283d78e53489289dc0592d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/ipv4/ipmr_base.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.20"
            },
            {
              "lessThan": "4.20",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.291",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.235",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.179",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.129",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.76",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.14",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.291",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.235",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.179",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.129",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.76",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.13",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13.2",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipmr: do not call mr_mfc_uses_dev() for unres entries\n\nsyzbot found that calling mr_mfc_uses_dev() for unres entries\nwould crash [1], because c-\u003emfc_un.res.minvif / c-\u003emfc_un.res.maxvif\nalias to \"struct sk_buff_head unresolved\", which contain two pointers.\n\nThis code never worked, lets remove it.\n\n[1]\nUnable to handle kernel paging request at virtual address ffff5fff2d536613\nKASAN: maybe wild-memory-access in range [0xfffefff96a9b3098-0xfffefff96a9b309f]\nModules linked in:\nCPU: 1 UID: 0 PID: 7321 Comm: syz.0.16 Not tainted 6.13.0-rc7-syzkaller-g1950a0af2d55 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\npstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n pc : mr_mfc_uses_dev net/ipv4/ipmr_base.c:290 [inline]\n pc : mr_table_dump+0x5a4/0x8b0 net/ipv4/ipmr_base.c:334\n lr : mr_mfc_uses_dev net/ipv4/ipmr_base.c:289 [inline]\n lr : mr_table_dump+0x694/0x8b0 net/ipv4/ipmr_base.c:334\nCall trace:\n  mr_mfc_uses_dev net/ipv4/ipmr_base.c:290 [inline] (P)\n  mr_table_dump+0x5a4/0x8b0 net/ipv4/ipmr_base.c:334 (P)\n  mr_rtm_dumproute+0x254/0x454 net/ipv4/ipmr_base.c:382\n  ipmr_rtm_dumproute+0x248/0x4b4 net/ipv4/ipmr.c:2648\n  rtnl_dump_all+0x2e4/0x4e8 net/core/rtnetlink.c:4327\n  rtnl_dumpit+0x98/0x1d0 net/core/rtnetlink.c:6791\n  netlink_dump+0x4f0/0xbc0 net/netlink/af_netlink.c:2317\n  netlink_recvmsg+0x56c/0xe64 net/netlink/af_netlink.c:1973\n  sock_recvmsg_nosec net/socket.c:1033 [inline]\n  sock_recvmsg net/socket.c:1055 [inline]\n  sock_read_iter+0x2d8/0x40c net/socket.c:1125\n  new_sync_read fs/read_write.c:484 [inline]\n  vfs_read+0x740/0x970 fs/read_write.c:565\n  ksys_read+0x15c/0x26c fs/read_write.c:708"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable loop is reached only through an RTM_GETROUTE netlink dump (`rtnl_dump_all` \u2192 `ipmr_rtm_dumproute` \u2192 `mr_table_dump`) issued on a local AF_NETLINK socket. Although the unresolved cache entry itself is created by an incoming multicast packet, the crash requires the local netlink request, so the attack vector is Local.\nAC:L - The attacker fully controls both halves \u2014 creating unresolved MFC entries by sending multicast packets into a vif, and issuing the RTA_OIF-filtered strict-check dump \u2014 and can repeat this arbitrarily until an entry whose aliased pointer halves satisfy `minvif \u003c maxvif` is walked. No condition outside the attacker\u0027s influence is required.\nPR:L - Netlink route dumps require no capability at all (rtnetlink only enforces CAP_NET_ADMIN for non-GET messages), and the multicast-routing setup that populates `mfc_unres_queue` is gated on CAP_NET_RAW/`ns_capable(net-\u003euser_ns, CAP_NET_ADMIN)`, both obtainable by any unprivileged user via `unshare -Urn`. On a host already running a multicast routing daemon, an unprivileged user needs only the dump.\nUI:N - The attacker performs every step itself \u2014 socket setup, multicast packet injection, and the netlink dump \u2014 with no action by any other user or administrator.\nS:U - The out-of-bounds access and its consequences are confined to the kernel\u0027s own memory within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The loop performs unbounded, wild out-of-bounds reads of kernel memory at indices derived from a heap pointer, spanning arbitrarily far outside `mrt-\u003evif_table` and the mfc allocation, and the result feeds a userspace-observable dump-filtering decision that acts as an oracle on that out-of-bounds kernel memory.\nI:N - `mr_mfc_uses_dev()` is a purely read-only loop and `mr_fill_mroute()` returns early for unresolved entries, so no kernel memory is written or corrupted by this bug.\nA:H - The wild indexing causes a kernel paging fault / KASAN wild-memory-access oops, as reported by syzbot, and the near-billion-iteration loop runs while holding `mfc_unres_lock` with softirqs disabled, risking soft lockup and RCU stalls \u2014 a reliably reproducible kernel crash or hang."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:53:54.833Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/71a0fcb68c0a5f3ec912b540cd5d72148e6ee5f1"
        },
        {
          "url": "https://git.kernel.org/stable/c/53df27fd38f84bd3cd6b004eb4ff3c4903114f1d"
        },
        {
          "url": "https://git.kernel.org/stable/c/547ef7e8cbb98f966c8719a3e15d4e078aaa9b47"
        },
        {
          "url": "https://git.kernel.org/stable/c/57177c5f47a8da852f8d76cf6945cf803f8bb9e5"
        },
        {
          "url": "https://git.kernel.org/stable/c/b379b3162ff55a70464c6a934ae9bf0497478a62"
        },
        {
          "url": "https://git.kernel.org/stable/c/a099834a51ccf9bbba3de86a251b3433539abfde"
        },
        {
          "url": "https://git.kernel.org/stable/c/26bb7d991f04eeef47dfad23e533834995c26f7a"
        },
        {
          "url": "https://git.kernel.org/stable/c/15a901361ec3fb1c393f91880e1cbf24ec0a88bd"
        }
      ],
      "title": "ipmr: do not call mr_mfc_uses_dev() for unres entries",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-21719",
    "datePublished": "2025-02-27T02:07:28.573Z",
    "dateReserved": "2024-12-29T08:45:45.753Z",
    "dateUpdated": "2026-08-05T11:53:54.833Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.