cve-2024-27070
Vulnerability from cvelistv5
Published
2024-05-01 13:04
Modified
2024-08-02 00:27
Severity
Summary
f2fs: fix to avoid use-after-free issue in f2fs_filemap_fault
References
SourceURLTags
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8186e16a766d709a08f188d2f4e84098f364bea1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eb70d5a6c932d9d23f4bb3e7b83782c21ac4b064
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
Show details on NVD website

To clipboard 

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                "timestamp": "2024-05-28T16:13:45.773958Z",
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          "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."
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      "title": "f2fs: fix to avoid use-after-free issue in f2fs_filemap_fault",
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    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-27070",
    "datePublished": "2024-05-01T13:04:26.824Z",
    "dateReserved": "2024-02-19T14:20:24.216Z",
    "dateUpdated": "2024-08-02T00:27:57.831Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-27070\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-01T13:15:51.037\",\"lastModified\":\"2024-05-01T19:50:25.633\",\"vulnStatus\":\"Awaiting Analysis\",\"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.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/8186e16a766d709a08f188d2f4e84098f364bea1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/eb70d5a6c932d9d23f4bb3e7b83782c21ac4b064\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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