CVE-2024-39467 (GCVE-0-2024-39467)

Vulnerability from cvelistv5 – Published: 2024-06-25 14:25 – Updated: 2026-05-11 20:21
VLAI
Title
f2fs: fix to do sanity check on i_xattr_nid in sanity_check_inode()
Summary
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on i_xattr_nid in sanity_check_inode() syzbot reports a kernel bug as below: F2FS-fs (loop0): Mounted with checkpoint version = 48b305e4 ================================================================== BUG: KASAN: slab-out-of-bounds in f2fs_test_bit fs/f2fs/f2fs.h:2933 [inline] BUG: KASAN: slab-out-of-bounds in current_nat_addr fs/f2fs/node.h:213 [inline] BUG: KASAN: slab-out-of-bounds in f2fs_get_node_info+0xece/0x1200 fs/f2fs/node.c:600 Read of size 1 at addr ffff88807a58c76c by task syz-executor280/5076 CPU: 1 PID: 5076 Comm: syz-executor280 Not tainted 6.9.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 f2fs_test_bit fs/f2fs/f2fs.h:2933 [inline] current_nat_addr fs/f2fs/node.h:213 [inline] f2fs_get_node_info+0xece/0x1200 fs/f2fs/node.c:600 f2fs_xattr_fiemap fs/f2fs/data.c:1848 [inline] f2fs_fiemap+0x55d/0x1ee0 fs/f2fs/data.c:1925 ioctl_fiemap fs/ioctl.c:220 [inline] do_vfs_ioctl+0x1c07/0x2e50 fs/ioctl.c:838 __do_sys_ioctl fs/ioctl.c:902 [inline] __se_sys_ioctl+0x81/0x170 fs/ioctl.c:890 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f The root cause is we missed to do sanity check on i_xattr_nid during f2fs_iget(), so that in fiemap() path, current_nat_addr() will access nat_bitmap w/ offset from invalid i_xattr_nid, result in triggering kasan bug report, fix it.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 , < c559a8d840562fbfce9f318448dda2f7d3e6d8e8 (git)
Affected: 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 , < 75c87e2ac6149abf44bdde0dd6d541763ddb0dff (git)
Affected: 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 , < 1640dcf383cdba52be8b28d2a1a2aa7ef7a30c98 (git)
Affected: 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 , < 8c8aa473fe6eb46a4bf99f3ea2dbe52bf0c1a1f0 (git)
Affected: 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 , < be0155202e431f3007778568a72432c68f8946ba (git)
Affected: 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 , < 68e3cd4ecb8603936cccdc338929130045df2e57 (git)
Affected: 98e4da8ca301e062d79ae168c67e56f3c3de3ce4 , < 20faaf30e55522bba2b56d9c46689233205d7717 (git)
Create a notification for this product.
Linux Linux Affected: 3.8
Unaffected: 0 , < 3.8 (semver)
Unaffected: 5.4.278 , ≤ 5.4.* (semver)
Unaffected: 5.10.219 , ≤ 5.10.* (semver)
Unaffected: 5.15.161 , ≤ 5.15.* (semver)
Unaffected: 6.1.94 , ≤ 6.1.* (semver)
Unaffected: 6.6.34 , ≤ 6.6.* (semver)
Unaffected: 6.9.5 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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      "date": "2026-06-23",
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#0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024\\nCall Trace:\\n \u003cTASK\u003e\\n __dump_stack lib/dump_stack.c:88 [inline]\\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114\\n print_address_description mm/kasan/report.c:377 [inline]\\n print_report+0x169/0x550 mm/kasan/report.c:488\\n kasan_report+0x143/0x180 mm/kasan/report.c:601\\n f2fs_test_bit fs/f2fs/f2fs.h:2933 [inline]\\n current_nat_addr fs/f2fs/node.h:213 [inline]\\n f2fs_get_node_info+0xece/0x1200 fs/f2fs/node.c:600\\n f2fs_xattr_fiemap fs/f2fs/data.c:1848 [inline]\\n f2fs_fiemap+0x55d/0x1ee0 fs/f2fs/data.c:1925\\n ioctl_fiemap fs/ioctl.c:220 [inline]\\n do_vfs_ioctl+0x1c07/0x2e50 fs/ioctl.c:838\\n __do_sys_ioctl fs/ioctl.c:902 [inline]\\n __se_sys_ioctl+0x81/0x170 fs/ioctl.c:890\\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nThe root cause is we missed to do sanity check on i_xattr_nid during\\nf2fs_iget(), so that in fiemap() path, current_nat_addr() will access\\nnat_bitmap w/ offset from invalid i_xattr_nid, result in triggering\\nkasan bug report, fix it.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: f2fs: correcci\u00f3n para realizar una verificaci\u00f3n de estado en i_xattr_nid en sanity_check_inode() syzbot informa un error en el kernel como se muestra a continuaci\u00f3n: F2FS-fs (loop0): Montado con la versi\u00f3n de punto de control = 48b305e4 ==== ==================================================== ============ ERROR: KASAN: losa fuera de los l\u00edmites en f2fs_test_bit fs/f2fs/f2fs.h:2933 [en l\u00ednea] ERROR: KASAN: losa fuera de los l\u00edmites en current_nat_addr fs/f2fs/node.h:213 [en l\u00ednea] ERROR: KASAN: losa fuera de los l\u00edmites en f2fs_get_node_info+0xece/0x1200 fs/f2fs/node.c:600 Lectura de tama\u00f1o 1 en la direcci\u00f3n ffff88807a58c76c mediante la tarea syz-executor280 /5076 CPU: 1 PID: 5076 Comm: syz-executor280 No contaminado 6.9.0-rc5-syzkaller #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 27/03/2024 Seguimiento de llamadas:  __dump_stack lib/dump_stack.c:88 [en l\u00ednea] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [en l\u00ednea] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report +0x143/0x180 mm/kasan/report.c:601 f2fs_test_bit fs/f2fs/f2fs.h:2933 [en l\u00ednea] current_nat_addr fs/f2fs/node.h:213 [en l\u00ednea] f2fs_get_node_info+0xece/0x1200 fs/f2fs/node. c:600 f2fs_xattr_fiemap fs/f2fs/data.c:1848 [en l\u00ednea] f2fs_fiemap+0x55d/0x1ee0 fs/f2fs/data.c:1925 ioctl_fiemap fs/ioctl.c:220 [en l\u00ednea] do_vfs_ioctl+0x1c07/0x2e50 ioctl. c:838 __do_sys_ioctl fs/ioctl.c:902 [en l\u00ednea] __se_sys_ioctl+0x81/0x170 fs/ioctl.c:890 do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea] do_syscall_64+0xf5/0x240 arch/x86/ Entry/common.c:83 Entry_SYSCALL_64_after_hwframe+0x77/0x7f La causa principal es que no hicimos una verificaci\u00f3n de cordura en i_xattr_nid durante f2fs_iget(), de modo que en la ruta fiemap(), current_nat_addr() acceder\u00e1 a nat_bitmap con desplazamiento desde i_xattr_nid no v\u00e1lido, resulta en la activaci\u00f3n del informe de error de Kasan, 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Trace:\\n \u003cTASK\u003e\\n __dump_stack lib/dump_stack.c:88 [inline]\\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114\\n print_address_description mm/kasan/report.c:377 [inline]\\n print_report+0x169/0x550 mm/kasan/report.c:488\\n kasan_report+0x143/0x180 mm/kasan/report.c:601\\n f2fs_test_bit fs/f2fs/f2fs.h:2933 [inline]\\n current_nat_addr fs/f2fs/node.h:213 [inline]\\n f2fs_get_node_info+0xece/0x1200 fs/f2fs/node.c:600\\n f2fs_xattr_fiemap fs/f2fs/data.c:1848 [inline]\\n f2fs_fiemap+0x55d/0x1ee0 fs/f2fs/data.c:1925\\n ioctl_fiemap fs/ioctl.c:220 [inline]\\n do_vfs_ioctl+0x1c07/0x2e50 fs/ioctl.c:838\\n __do_sys_ioctl fs/ioctl.c:902 [inline]\\n __se_sys_ioctl+0x81/0x170 fs/ioctl.c:890\\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\nThe root cause is we missed to do sanity check on i_xattr_nid during\\nf2fs_iget(), so that in fiemap() path, current_nat_addr() will access\\nnat_bitmap w/ offset from invalid i_xattr_nid, result in triggering\\nkasan bug report, fix it.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.278\", \"versionStartIncluding\": \"3.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.219\", \"versionStartIncluding\": \"3.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.161\", \"versionStartIncluding\": \"3.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.94\", \"versionStartIncluding\": \"3.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.34\", \"versionStartIncluding\": \"3.8\"}, 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      "cveMetadata": "{\"cveId\": \"CVE-2024-39467\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-07-11T17:19:48.933Z\", \"dateReserved\": \"2024-06-25T14:23:23.744Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-25T14:25:05.609Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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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

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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.