GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2025-71123 (GCVE-0-2025-71123)

Vulnerability from cvelistv5 – Published: 2026-01-14 15:06 – Updated: 2026-09-08 08:44
VLAI
Title
ext4: fix string copying in parse_apply_sb_mount_options()
Summary
In the Linux kernel, the following vulnerability has been resolved: ext4: fix string copying in parse_apply_sb_mount_options() strscpy_pad() can't be used to copy a non-NUL-term string into a NUL-term string of possibly bigger size. Commit 0efc5990bca5 ("string.h: Introduce memtostr() and memtostr_pad()") provides additional information in that regard. So if this happens, the following warning is observed: strnlen: detected buffer overflow: 65 byte read of buffer size 64 WARNING: CPU: 0 PID: 28655 at lib/string_helpers.c:1032 __fortify_report+0x96/0xc0 lib/string_helpers.c:1032 Modules linked in: CPU: 0 UID: 0 PID: 28655 Comm: syz-executor.3 Not tainted 6.12.54-syzkaller-00144-g5f0270f1ba00 #0 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:__fortify_report+0x96/0xc0 lib/string_helpers.c:1032 Call Trace: <TASK> __fortify_panic+0x1f/0x30 lib/string_helpers.c:1039 strnlen include/linux/fortify-string.h:235 [inline] sized_strscpy include/linux/fortify-string.h:309 [inline] parse_apply_sb_mount_options fs/ext4/super.c:2504 [inline] __ext4_fill_super fs/ext4/super.c:5261 [inline] ext4_fill_super+0x3c35/0xad00 fs/ext4/super.c:5706 get_tree_bdev_flags+0x387/0x620 fs/super.c:1636 vfs_get_tree+0x93/0x380 fs/super.c:1814 do_new_mount fs/namespace.c:3553 [inline] path_mount+0x6ae/0x1f70 fs/namespace.c:3880 do_mount fs/namespace.c:3893 [inline] __do_sys_mount fs/namespace.c:4103 [inline] __se_sys_mount fs/namespace.c:4080 [inline] __x64_sys_mount+0x280/0x300 fs/namespace.c:4080 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x64/0x140 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x76/0x7e Since userspace is expected to provide s_mount_opts field to be at most 63 characters long with the ending byte being NUL-term, use a 64-byte buffer which matches the size of s_mount_opts, so that strscpy_pad() does its job properly. Return with error if the user still managed to provide a non-NUL-term string here. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: b2bac84fde28fb6a88817b8b761abda17a1d300b , < 52ac96c4a2dd7bc47666000440b0602d9742e820 (git)
Affected: e651294218d2684302ee5ed95ccf381646f3e5b4 , < 6e37143560e37869d51b7d9e0ac61fc48895f8a0 (git)
Affected: 01829af7656b56d83682b3491265d583d502e502 , < 902ca2356f1e3ec5355c5808ad5d3f9d0095b0cc (git)
Affected: 2a0cf438320cdb783e0378570744c0ef0d83e934 , < db9ee13fab0267eccf6544ee35b16c9522db9aac (git)
Affected: 8ecb790ea8c3fc69e77bace57f14cf0d7c177bd8 , < 5bbacbbf1ca4419861dca3c6b82707c10e9c021c (git)
Affected: 8ecb790ea8c3fc69e77bace57f14cf0d7c177bd8 , < ee5a977b4e771cc181f39d504426dbd31ed701cc (git)
Affected: 7bf46ff83a0ef11836e38ebd72cdc5107209342d (git)
Affected: a6e94557cd05adc82fae0400f6e17745563e5412 (git)
Affected: 5.10.246 , < 5.10.248 (semver)
Affected: 6.1.158 , < 6.1.160 (semver)
Affected: 6.6.114 , < 6.6.120 (semver)
Affected: 6.12.54 , < 6.12.64 (semver)
Affected: 5.4.301 , < 5.5 (semver)
Affected: 6.17.4 , < 6.18 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 5.10.248 , ≤ 5.10.* (semver)
Unaffected: 6.1.160 , ≤ 6.1.* (semver)
Unaffected: 6.6.120 , ≤ 6.6.* (semver)
Unaffected: 6.12.64 , ≤ 6.12.* (semver)
Unaffected: 6.18.3 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
guessed Create a notification for this product.
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "V3.1.6",
                "versionType": "custom"
              }
            ]
          },
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "V3.1.6",
                "versionType": "custom"
              }
            ]
          },
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "V3.1.6",
                "versionType": "custom"
              }
            ]
          },
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "V3.1.6",
                "versionType": "custom"
              }
            ]
          },
          {
            "defaultStatus": "unknown",
            "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "V3.1.6",
                "versionType": "custom"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-08T08:44:00.414Z",
          "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
          "shortName": "siemens-SADP"
        },
        "references": [
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"
          }
        ],
        "x_adpType": "supplier"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/super.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "52ac96c4a2dd7bc47666000440b0602d9742e820",
              "status": "affected",
              "version": "b2bac84fde28fb6a88817b8b761abda17a1d300b",
              "versionType": "git"
            },
            {
              "lessThan": "6e37143560e37869d51b7d9e0ac61fc48895f8a0",
              "status": "affected",
              "version": "e651294218d2684302ee5ed95ccf381646f3e5b4",
              "versionType": "git"
            },
            {
              "lessThan": "902ca2356f1e3ec5355c5808ad5d3f9d0095b0cc",
              "status": "affected",
              "version": "01829af7656b56d83682b3491265d583d502e502",
              "versionType": "git"
            },
            {
              "lessThan": "db9ee13fab0267eccf6544ee35b16c9522db9aac",
              "status": "affected",
              "version": "2a0cf438320cdb783e0378570744c0ef0d83e934",
              "versionType": "git"
            },
            {
              "lessThan": "5bbacbbf1ca4419861dca3c6b82707c10e9c021c",
              "status": "affected",
              "version": "8ecb790ea8c3fc69e77bace57f14cf0d7c177bd8",
              "versionType": "git"
            },
            {
              "lessThan": "ee5a977b4e771cc181f39d504426dbd31ed701cc",
              "status": "affected",
              "version": "8ecb790ea8c3fc69e77bace57f14cf0d7c177bd8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7bf46ff83a0ef11836e38ebd72cdc5107209342d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a6e94557cd05adc82fae0400f6e17745563e5412",
              "versionType": "git"
            },
            {
              "lessThan": "5.10.248",
              "status": "affected",
              "version": "5.10.246",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.160",
              "status": "affected",
              "version": "6.1.158",
              "versionType": "semver"
            },
            {
              "lessThan": "6.6.120",
              "status": "affected",
              "version": "6.6.114",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.64",
              "status": "affected",
              "version": "6.12.54",
              "versionType": "semver"
            },
            {
              "lessThan": "5.5",
              "status": "affected",
              "version": "5.4.301",
              "versionType": "semver"
            },
            {
              "lessThan": "6.18",
              "status": "affected",
              "version": "6.17.4",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/super.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18"
            },
            {
              "lessThan": "6.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.248",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.64",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.248",
                  "versionStartIncluding": "5.10.246",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.160",
                  "versionStartIncluding": "6.1.158",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.120",
                  "versionStartIncluding": "6.6.114",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.64",
                  "versionStartIncluding": "6.12.54",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.3",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.4.301",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.17.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix string copying in parse_apply_sb_mount_options()\n\nstrscpy_pad() can\u0027t be used to copy a non-NUL-term string into a NUL-term\nstring of possibly bigger size.  Commit 0efc5990bca5 (\"string.h: Introduce\nmemtostr() and memtostr_pad()\") provides additional information in that\nregard.  So if this happens, the following warning is observed:\n\nstrnlen: detected buffer overflow: 65 byte read of buffer size 64\nWARNING: CPU: 0 PID: 28655 at lib/string_helpers.c:1032 __fortify_report+0x96/0xc0 lib/string_helpers.c:1032\nModules linked in:\nCPU: 0 UID: 0 PID: 28655 Comm: syz-executor.3 Not tainted 6.12.54-syzkaller-00144-g5f0270f1ba00 #0\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\nRIP: 0010:__fortify_report+0x96/0xc0 lib/string_helpers.c:1032\nCall Trace:\n \u003cTASK\u003e\n __fortify_panic+0x1f/0x30 lib/string_helpers.c:1039\n strnlen include/linux/fortify-string.h:235 [inline]\n sized_strscpy include/linux/fortify-string.h:309 [inline]\n parse_apply_sb_mount_options fs/ext4/super.c:2504 [inline]\n __ext4_fill_super fs/ext4/super.c:5261 [inline]\n ext4_fill_super+0x3c35/0xad00 fs/ext4/super.c:5706\n get_tree_bdev_flags+0x387/0x620 fs/super.c:1636\n vfs_get_tree+0x93/0x380 fs/super.c:1814\n do_new_mount fs/namespace.c:3553 [inline]\n path_mount+0x6ae/0x1f70 fs/namespace.c:3880\n do_mount fs/namespace.c:3893 [inline]\n __do_sys_mount fs/namespace.c:4103 [inline]\n __se_sys_mount fs/namespace.c:4080 [inline]\n __x64_sys_mount+0x280/0x300 fs/namespace.c:4080\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0x64/0x140 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nSince userspace is expected to provide s_mount_opts field to be at most 63\ncharacters long with the ending byte being NUL-term, use a 64-byte buffer\nwhich matches the size of s_mount_opts, so that strscpy_pad() does its job\nproperly.  Return with error if the user still managed to provide a\nnon-NUL-term string here.\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-23T16:03:16.882Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/52ac96c4a2dd7bc47666000440b0602d9742e820"
        },
        {
          "url": "https://git.kernel.org/stable/c/6e37143560e37869d51b7d9e0ac61fc48895f8a0"
        },
        {
          "url": "https://git.kernel.org/stable/c/902ca2356f1e3ec5355c5808ad5d3f9d0095b0cc"
        },
        {
          "url": "https://git.kernel.org/stable/c/db9ee13fab0267eccf6544ee35b16c9522db9aac"
        },
        {
          "url": "https://git.kernel.org/stable/c/5bbacbbf1ca4419861dca3c6b82707c10e9c021c"
        },
        {
          "url": "https://git.kernel.org/stable/c/ee5a977b4e771cc181f39d504426dbd31ed701cc"
        }
      ],
      "title": "ext4: fix string copying in parse_apply_sb_mount_options()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71123",
    "datePublished": "2026-01-14T15:06:09.246Z",
    "dateReserved": "2026-01-13T15:30:19.654Z",
    "dateUpdated": "2026-09-08T08:44:00.414Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-71123",
      "date": "2026-09-17",
      "epss": "0.00167",
      "percentile": "0.06369"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-71123\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-01-14T15:16:02.000\",\"lastModified\":\"2026-07-14T13:18:03.980\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\next4: fix string copying in parse_apply_sb_mount_options()\\n\\nstrscpy_pad() can\u0027t be used to copy a non-NUL-term string into a NUL-term\\nstring of possibly bigger size.  Commit 0efc5990bca5 (\\\"string.h: Introduce\\nmemtostr() and memtostr_pad()\\\") provides additional information in that\\nregard.  So if this happens, the following warning is observed:\\n\\nstrnlen: detected buffer overflow: 65 byte read of buffer size 64\\nWARNING: CPU: 0 PID: 28655 at lib/string_helpers.c:1032 __fortify_report+0x96/0xc0 lib/string_helpers.c:1032\\nModules linked in:\\nCPU: 0 UID: 0 PID: 28655 Comm: syz-executor.3 Not tainted 6.12.54-syzkaller-00144-g5f0270f1ba00 #0\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\\nRIP: 0010:__fortify_report+0x96/0xc0 lib/string_helpers.c:1032\\nCall Trace:\\n \u003cTASK\u003e\\n __fortify_panic+0x1f/0x30 lib/string_helpers.c:1039\\n strnlen include/linux/fortify-string.h:235 [inline]\\n sized_strscpy include/linux/fortify-string.h:309 [inline]\\n parse_apply_sb_mount_options fs/ext4/super.c:2504 [inline]\\n __ext4_fill_super fs/ext4/super.c:5261 [inline]\\n ext4_fill_super+0x3c35/0xad00 fs/ext4/super.c:5706\\n get_tree_bdev_flags+0x387/0x620 fs/super.c:1636\\n vfs_get_tree+0x93/0x380 fs/super.c:1814\\n do_new_mount fs/namespace.c:3553 [inline]\\n path_mount+0x6ae/0x1f70 fs/namespace.c:3880\\n do_mount fs/namespace.c:3893 [inline]\\n __do_sys_mount fs/namespace.c:4103 [inline]\\n __se_sys_mount fs/namespace.c:4080 [inline]\\n __x64_sys_mount+0x280/0x300 fs/namespace.c:4080\\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n do_syscall_64+0x64/0x140 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n\\nSince userspace is expected to provide s_mount_opts field to be at most 63\\ncharacters long with the ending byte being NUL-term, use a 64-byte buffer\\nwhich matches the size of s_mount_opts, so that strscpy_pad() does its job\\nproperly.  Return with error if the user still managed to provide a\\nnon-NUL-term string here.\\n\\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\\n\\next4: corrige la copia de cadenas en parse_apply_sb_mount_options()\\n\\nstrscpy_pad() no puede usarse para copiar una cadena no terminada en NUL en una cadena terminada en NUL de tama\u00f1o posiblemente mayor. El commit 0efc5990bca5 (\u0027string.h: Introduce memtostr() y memtostr_pad()\u0027) proporciona informaci\u00f3n adicional al respecto. As\u00ed que si esto ocurre, se observa la siguiente advertencia:\\n\\nstrnlen: desbordamiento de b\u00fafer detectado: lectura de 65 bytes de un b\u00fafer de tama\u00f1o 64\\nADVERTENCIA: CPU: 0 PID: 28655 en lib/string_helpers.c:1032 __fortify_report+0x96/0xc0 lib/string_helpers.c:1032\\nM\u00f3dulos enlazados:\\nCPU: 0 UID: 0 PID: 28655 Comm: syz-executor.3 No contaminado 6.12.54-syzkaller-00144-g5f0270f1ba00 #0\\nNombre del hardware: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\\nRIP: 0010:__fortify_report+0x96/0xc0 lib/string_helpers.c:1032\\nTraza de llamada:\\n \\n __fortify_panic+0x1f/0x30 lib/string_helpers.c:1039\\n strnlen include/linux/fortify-string.h:235 [en l\u00ednea]\\n sized_strscpy include/linux/fortify-string.h:309 [en l\u00ednea]\\n parse_apply_sb_mount_options fs/ext4/super.c:2504 [en l\u00ednea]\\n __ext4_fill_super fs/ext4/super.c:5261 [en l\u00ednea]\\n ext4_fill_super+0x3c35/0xad00 fs/ext4/super.c:5706\\n get_tree_bdev_flags+0x387/0x620 fs/super.c:1636\\n vfs_get_tree+0x93/0x380 fs/super.c:1814\\n do_new_mount fs/namespace.c:3553 [en l\u00ednea]\\n path_mount+0x6ae/0x1f70 fs/namespace.c:3880\\n do_mount fs/namespace.c:3893 [en l\u00ednea]\\n __do_sys_mount fs/namespace.c:4103 [en l\u00ednea]\\n __se_sys_mount fs/namespace.c:4080 [en l\u00ednea]\\n __x64_sys_mount+0x280/0x300 fs/namespace.c:4080\\n do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea]\\n do_syscall_64+0x64/0x140 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\\n\\nDado que se espera que el espacio de usuario proporcione el campo s_mount_opts de una longitud m\u00e1xima de 63 caracteres con el byte final terminado en NUL, use un b\u00fafer de 64 bytes que coincida con el tama\u00f1o de s_mount_opts, para que strscpy_pad() realice su trabajo correctamente. Devuelve un error si el usuario a\u00fan logr\u00f3 proporcionar una cadena no terminada en NUL aqu\u00ed.\\n\\nEncontrado por el Centro de Verificaci\u00f3n de Linux (linuxtesting.org) con Syzkaller.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/ext4/super.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"b2bac84fde28fb6a88817b8b761abda17a1d300b\",\"lessThan\":\"52ac96c4a2dd7bc47666000440b0602d9742e820\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e651294218d2684302ee5ed95ccf381646f3e5b4\",\"lessThan\":\"6e37143560e37869d51b7d9e0ac61fc48895f8a0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"01829af7656b56d83682b3491265d583d502e502\",\"lessThan\":\"902ca2356f1e3ec5355c5808ad5d3f9d0095b0cc\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2a0cf438320cdb783e0378570744c0ef0d83e934\",\"lessThan\":\"db9ee13fab0267eccf6544ee35b16c9522db9aac\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8ecb790ea8c3fc69e77bace57f14cf0d7c177bd8\",\"lessThan\":\"5bbacbbf1ca4419861dca3c6b82707c10e9c021c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8ecb790ea8c3fc69e77bace57f14cf0d7c177bd8\",\"lessThan\":\"ee5a977b4e771cc181f39d504426dbd31ed701cc\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7bf46ff83a0ef11836e38ebd72cdc5107209342d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a6e94557cd05adc82fae0400f6e17745563e5412\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5.10.246\",\"lessThan\":\"5.10.248\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.1.158\",\"lessThan\":\"6.1.160\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.6.114\",\"lessThan\":\"6.6.120\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.12.54\",\"lessThan\":\"6.12.64\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.4.301\",\"lessThan\":\"5.5\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.17.4\",\"lessThan\":\"6.18\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/ext4/super.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.18\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.18\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.248\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.160\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.120\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.64\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.3\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.19\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]},{\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\",\"affectedData\":[{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.6\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.6\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.6\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.6\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.6\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"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:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.4.301\",\"versionEndExcluding\":\"5.5\",\"matchCriteriaId\":\"ABCD8233-CFD6-4194-AA34-BD9E287307E3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.10.246\",\"versionEndExcluding\":\"5.10.248\",\"matchCriteriaId\":\"B493FE88-E93E-41E6-905B-84D636E8D995\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.1.158\",\"versionEndExcluding\":\"6.1.160\",\"matchCriteriaId\":\"5D82DB41-FE37-4DBE-90D1-55838504A12B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.6.114\",\"versionEndExcluding\":\"6.6.120\",\"matchCriteriaId\":\"132C353E-B372-43F7-9F5D-81FDECC04B27\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.12.54\",\"versionEndExcluding\":\"6.12.64\",\"matchCriteriaId\":\"0B335F73-3E9B-471B-AE8B-F4192A2CC5E4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.17.4\",\"versionEndExcluding\":\"6.18\",\"matchCriteriaId\":\"03CF48C0-2F25-4797-9371-AD6932300161\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.18.1\",\"versionEndExcluding\":\"6.18.3\",\"matchCriteriaId\":\"A3586EB6-087D-41EA-AD79-2AA54D44AAA1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.18:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"DCE57113-2223-4308-A0F2-5E6ECFBB3C23\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"17B67AA7-40D6-4AFA-8459-F200F3D7CFD1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"C47E4CC9-C826-4FA9-B014-7FE3D9B318B2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"F71D92C0-C023-48BD-B3B6-70B638EEE298\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"13580667-0A98-40CC-B29F-D12790B91BDB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"CAD1FED7-CF48-47BF-AC7D-7B6FA3C065FC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"3EF854A1-ABB1-4E93-BE9A-44569EC76C0D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*\",\"matchCriteriaId\":\"F5DC0CA6-F0AF-4DDF-A882-3DADB9A886A7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.19:rc8:*:*:*:*:*:*\",\"matchCriteriaId\":\"EB5B7DFC-C36B-45D8-922C-877569FDDF43\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/52ac96c4a2dd7bc47666000440b0602d9742e820\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5bbacbbf1ca4419861dca3c6b82707c10e9c021c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6e37143560e37869d51b7d9e0ac61fc48895f8a0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/902ca2356f1e3ec5355c5808ad5d3f9d0095b0cc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/db9ee13fab0267eccf6544ee35b16c9522db9aac\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ee5a977b4e771cc181f39d504426dbd31ed701cc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-019113.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T07:12:39+00:00",
      "cve": "CVE-2025-71123",
      "id": "CVE-2025-71123",
      "initial_release_date": "2025-01-01T00:00:00+00:00",
      "product_status:known_affected": "14",
      "product_status:known_not_affected": "260",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ext4: fix string copying in parse_apply_sb_mount_options()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-71123.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-11T01:47:46Z",
      "cve": "CVE-2025-71123",
      "id": "CVE-2025-71123",
      "initial_release_date": "2026-01-18T00:24:08Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "399",
      "product_status:known_not_affected": "252",
      "product_status:recommended": "326",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-71123",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-71123.json",
      "version": "30"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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

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.


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.