fkie_cve-2024-27070
Vulnerability from fkie_nvd
Published
2024-05-01 13:15
Modified
2024-12-26 20:25
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: f2fs: fix to avoid use-after-free issue in f2fs_filemap_fault syzbot reports a f2fs bug as below: BUG: KASAN: slab-use-after-free in f2fs_filemap_fault+0xd1/0x2c0 fs/f2fs/file.c:49 Read of size 8 at addr ffff88807bb22680 by task syz-executor184/5058 CPU: 0 PID: 5058 Comm: syz-executor184 Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0x163/0x540 mm/kasan/report.c:488 kasan_report+0x142/0x170 mm/kasan/report.c:601 f2fs_filemap_fault+0xd1/0x2c0 fs/f2fs/file.c:49 __do_fault+0x131/0x450 mm/memory.c:4376 do_shared_fault mm/memory.c:4798 [inline] do_fault mm/memory.c:4872 [inline] do_pte_missing mm/memory.c:3745 [inline] handle_pte_fault mm/memory.c:5144 [inline] __handle_mm_fault+0x23b7/0x72b0 mm/memory.c:5285 handle_mm_fault+0x27e/0x770 mm/memory.c:5450 do_user_addr_fault arch/x86/mm/fault.c:1364 [inline] handle_page_fault arch/x86/mm/fault.c:1507 [inline] exc_page_fault+0x456/0x870 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 The root cause is: in f2fs_filemap_fault(), vmf->vma may be not alive after filemap_fault(), so it may cause use-after-free issue when accessing vmf->vma->vm_flags in trace_f2fs_filemap_fault(). So it needs to keep vm_flags in separated temporary variable for tracepoint use.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8186e16a766d709a08f188d2f4e84098f364bea1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eb70d5a6c932d9d23f4bb3e7b83782c21ac4b064Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8186e16a766d709a08f188d2f4e84098f364bea1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/eb70d5a6c932d9d23f4bb3e7b83782c21ac4b064Patch
Impacted products
Vendor Product Version
linux linux_kernel *


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "543A75FF-25B8-4046-A514-1EA8EDD87AB1",
              "versionEndExcluding": "6.8.2",
              "versionStartIncluding": "6.8",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to avoid use-after-free issue in f2fs_filemap_fault\n\nsyzbot reports a f2fs bug as below:\n\nBUG: KASAN: slab-use-after-free in f2fs_filemap_fault+0xd1/0x2c0 fs/f2fs/file.c:49\nRead of size 8 at addr ffff88807bb22680 by task syz-executor184/5058\n\nCPU: 0 PID: 5058 Comm: syz-executor184 Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106\n print_address_description mm/kasan/report.c:377 [inline]\n print_report+0x163/0x540 mm/kasan/report.c:488\n kasan_report+0x142/0x170 mm/kasan/report.c:601\n f2fs_filemap_fault+0xd1/0x2c0 fs/f2fs/file.c:49\n __do_fault+0x131/0x450 mm/memory.c:4376\n do_shared_fault mm/memory.c:4798 [inline]\n do_fault mm/memory.c:4872 [inline]\n do_pte_missing mm/memory.c:3745 [inline]\n handle_pte_fault mm/memory.c:5144 [inline]\n __handle_mm_fault+0x23b7/0x72b0 mm/memory.c:5285\n handle_mm_fault+0x27e/0x770 mm/memory.c:5450\n do_user_addr_fault arch/x86/mm/fault.c:1364 [inline]\n handle_page_fault arch/x86/mm/fault.c:1507 [inline]\n exc_page_fault+0x456/0x870 arch/x86/mm/fault.c:1563\n asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570\n\nThe root cause is: in f2fs_filemap_fault(), vmf-\u003evma may be not alive after\nfilemap_fault(), so it may cause use-after-free issue when accessing\nvmf-\u003evma-\u003evm_flags in trace_f2fs_filemap_fault(). So it needs to keep vm_flags\nin separated temporary variable for tracepoint use."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: f2fs: soluci\u00f3n para evitar el problema de use-after-free en f2fs_filemap_fault syzbot informa un error de f2fs como se muestra a continuaci\u00f3n: ERROR: KASAN: slab-use-after-free en f2fs_filemap_fault+0xd1/0x2c0 fs/f2fs/file.c:49 Lectura de tama\u00f1o 8 en la direcci\u00f3n ffff88807bb22680 por tarea syz-executor184/5058 CPU: 0 PID: 5058 Comm: syz-executor184 Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0 Nombre de hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 17/11/2023 Seguimiento de llamadas:  __dump_stack lib/dump_stack.c:88 [en l\u00ednea] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 print_address_description mm/kasan/ report.c:377 [en l\u00ednea] print_report+0x163/0x540 mm/kasan/report.c:488 kasan_report+0x142/0x170 mm/kasan/report.c:601 f2fs_filemap_fault+0xd1/0x2c0 fs/f2fs/file.c:49 __do_fault+0x131/0x450 mm/memory.c:4376 do_shared_fault mm/memory.c:4798 [en l\u00ednea] do_fault mm/memory.c:4872 [en l\u00ednea] do_pte_missing mm/memory.c:3745 [en l\u00ednea] handle_pte_fault mm/memory. c:5144 [en l\u00ednea] __handle_mm_fault+0x23b7/0x72b0 mm/memory.c:5285 handle_mm_fault+0x27e/0x770 mm/memory.c:5450 do_user_addr_fault arch/x86/mm/fault.c:1364 [en l\u00ednea] handle_page_fault arch/x86/ mm/fault.c:1507 [en l\u00ednea] exc_page_fault+0x456/0x870 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 La causa ra\u00edz es: en f2fs_filemap_fault(), es posible que vmf-\u0026gt;vma no est\u00e9 activo despu\u00e9s de filemap_fault(), por lo que puede causar un problema de use-after-free al acceder a vmf-\u0026gt;vma-\u0026gt;vm_flags en trace_f2fs_filemap_fault(). Por lo tanto, debe mantener vm_flags en una variable temporal separada para su uso en puntos de seguimiento."
    }
  ],
  "id": "CVE-2024-27070",
  "lastModified": "2024-12-26T20:25:12.927",
  "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": "2024-05-01T13:15:51.037",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/8186e16a766d709a08f188d2f4e84098f364bea1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/eb70d5a6c932d9d23f4bb3e7b83782c21ac4b064"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/8186e16a766d709a08f188d2f4e84098f364bea1"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/eb70d5a6c932d9d23f4bb3e7b83782c21ac4b064"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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