CVE-2024-27070 (GCVE-0-2024-27070)
Vulnerability from cvelistv5
Published
2024-05-01 13:04
Modified
2025-07-10 14:14
Severity ?
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
Impacted products
Vendor Product Version
Linux Linux Version: b43c3050d21196e5e7024872e3048dba83e31751
Version: 87f3afd366f7c668be0269efda8a89741a3ea6b3
Version: 87f3afd366f7c668be0269efda8a89741a3ea6b3
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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(). 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      "cveMetadata": "{\"cveId\": \"CVE-2024-27070\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-07-10T14:14:10.397Z\", \"dateReserved\": \"2024-02-19T14:20:24.216Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-01T13:04:26.824Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.