nvd-json-data-feeds/CVE-2024/CVE-2024-267xx/CVE-2024-26703.json

{
  "id": "CVE-2024-26703",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-04-03T15:15:53.140",
  "lastModified": "2025-02-27T22:02:32.530",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing/timerlat: Move hrtimer_init to timerlat_fd open()\n\nCurrently, the timerlat's hrtimer is initialized at the first read of\ntimerlat_fd, and destroyed at close(). It works, but it causes an error\nif the user program open() and close() the file without reading.\n\nHere's an example:\n\n # echo NO_OSNOISE_WORKLOAD > /sys/kernel/debug/tracing/osnoise/options\n # echo timerlat > /sys/kernel/debug/tracing/current_tracer\n\n # cat <<EOF > ./timerlat_load.py\n # !/usr/bin/env python3\n\n timerlat_fd = open(\"/sys/kernel/tracing/osnoise/per_cpu/cpu0/timerlat_fd\", 'r')\n timerlat_fd.close();\n EOF\n\n # ./taskset -c 0 ./timerlat_load.py\n<BOOM>\n\n BUG: kernel NULL pointer dereference, address: 0000000000000010\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 0 P4D 0\n Oops: 0000 [#1] PREEMPT SMP NOPTI\n CPU: 1 PID: 2673 Comm: python3 Not tainted 6.6.13-200.fc39.x86_64 #1\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-1.fc39 04/01/2014\n RIP: 0010:hrtimer_active+0xd/0x50\n Code: 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 48 8b 57 30 <8b> 42 10 a8 01 74 09 f3 90 8b 42 10 a8 01 75 f7 80 7f 38 00 75 1d\n RSP: 0018:ffffb031009b7e10 EFLAGS: 00010286\n RAX: 000000000002db00 RBX: ffff9118f786db08 RCX: 0000000000000000\n RDX: 0000000000000000 RSI: ffff9117a0e64400 RDI: ffff9118f786db08\n RBP: ffff9118f786db80 R08: ffff9117a0ddd420 R09: ffff9117804d4f70\n R10: 0000000000000000 R11: 0000000000000000 R12: ffff9118f786db08\n R13: ffff91178fdd5e20 R14: ffff9117840978c0 R15: 0000000000000000\n FS:  00007f2ffbab1740(0000) GS:ffff9118f7840000(0000) knlGS:0000000000000000\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 0000000000000010 CR3: 00000001b402e000 CR4: 0000000000750ee0\n PKRU: 55555554\n Call Trace:\n  <TASK>\n  ? __die+0x23/0x70\n  ? page_fault_oops+0x171/0x4e0\n  ? srso_alias_return_thunk+0x5/0x7f\n  ? avc_has_extended_perms+0x237/0x520\n  ? exc_page_fault+0x7f/0x180\n  ? asm_exc_page_fault+0x26/0x30\n  ? hrtimer_active+0xd/0x50\n  hrtimer_cancel+0x15/0x40\n  timerlat_fd_release+0x48/0xe0\n  __fput+0xf5/0x290\n  __x64_sys_close+0x3d/0x80\n  do_syscall_64+0x60/0x90\n  ? srso_alias_return_thunk+0x5/0x7f\n  ? __x64_sys_ioctl+0x72/0xd0\n  ? srso_alias_return_thunk+0x5/0x7f\n  ? syscall_exit_to_user_mode+0x2b/0x40\n  ? srso_alias_return_thunk+0x5/0x7f\n  ? do_syscall_64+0x6c/0x90\n  ? srso_alias_return_thunk+0x5/0x7f\n  ? exit_to_user_mode_prepare+0x142/0x1f0\n  ? srso_alias_return_thunk+0x5/0x7f\n  ? syscall_exit_to_user_mode+0x2b/0x40\n  ? srso_alias_return_thunk+0x5/0x7f\n  ? do_syscall_64+0x6c/0x90\n  entry_SYSCALL_64_after_hwframe+0x6e/0xd8\n RIP: 0033:0x7f2ffb321594\n Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 80 3d d5 cd 0d 00 00 74 13 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 3c c3 0f 1f 00 55 48 89 e5 48 83 ec 10 89 7d\n RSP: 002b:00007ffe8d8eef18 EFLAGS: 00000202 ORIG_RAX: 0000000000000003\n RAX: ffffffffffffffda RBX: 00007f2ffba4e668 RCX: 00007f2ffb321594\n RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003\n RBP: 00007ffe8d8eef40 R08: 0000000000000000 R09: 0000000000000000\n R10: 55c926e3167eae79 R11: 0000000000000202 R12: 0000000000000003\n R13: 00007ffe8d8ef030 R14: 0000000000000000 R15: 00007f2ffba4e668\n  </TASK>\n CR2: 0000000000000010\n ---[ end trace 0000000000000000 ]---\n\nMove hrtimer_init to timerlat_fd open() to avoid this problem."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tracing/timerlat: mover hrtimer_init a timerlat_fd open() Actualmente, el hrtimer de timerlat se inicializa en la primera lectura de timerlat_fd y se destruye al cerrar(). Funciona, pero causa un error si el programa de usuario abre() y cierra() el archivo sin leerlo. Aqu\u00ed hay un ejemplo: # echo NO_OSNOISE_WORKLOAD &gt; /sys/kernel/debug/tracing/osnoise/options # echo timerlat &gt; /sys/kernel/debug/tracing/current_tracer # cat &lt; ./timerlat_load.py # !/usr/ bin/env python3 timerlat_fd = open(\"/sys/kernel/tracing/osnoise/per_cpu/cpu0/timerlat_fd\", 'r') timerlat_fd.close(); EOF # ./taskset -c 0 ./timerlat_load.py  ERROR: desreferencia del puntero NULL del kernel, direcci\u00f3n: 0000000000000010 #PF: acceso de lectura del supervisor en modo kernel #PF: c\u00f3digo_de error(0x0000) - p\u00e1gina no presente PGD 0 P4D 0 Ups: 0000 [#1] PREEMPT SMP NOPTI CPU: 1 PID: 2673 Comm: python3 No contaminado 6.6.13-200.fc39.x86_64 #1 Nombre del hardware: PC est\u00e1ndar QEMU (Q35 + ICH9, 2009), BIOS 1.16. 3-1.fc39 01/04/2014 RIP: 0010:hrtimer_active+0xd/0x50 C\u00f3digo: 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 48 8b 57 30 &lt;8b&gt; 42 10 a8 01 74 09 f3 90 8b 42 10 a8 01 75 f7 80 7f 38 00 75 1d RSP: 0018:ffffb031009b7e10 EF LAGS: 00010286 RAX: 000000000002db00 RBX: ffff9118f786db08 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff9117a0e64400 RDI: ffff9118f786db08 RBP: ffff9118f786db80 R08: ffff9117a0ddd42 0 R09: ffff9117804d4f70 R10: 0000000000000000 R11: 0000000000000000 R12: ffff9118f786db08 R13: ffff91178fdd5e20 R14: ffff9117840978c0 R15: 000 0000000000000 FS: 00007f2ffbab1740(0000) GS:ffff9118f7840000( 0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000000000010 CR3: 00000001b402e000 CR4: 000000000075 0ee0 PKRU: 55555554 Seguimiento de llamadas:  ? __morir+0x23/0x70 ? page_fault_oops+0x171/0x4e0? srso_alias_return_thunk+0x5/0x7f? avc_has_extended_perms+0x237/0x520? exc_page_fault+0x7f/0x180? asm_exc_page_fault+0x26/0x30? hrtimer_active+0xd/0x50 hrtimer_cancel+0x15/0x40 timerlat_fd_release+0x48/0xe0 __fput+0xf5/0x290 __x64_sys_close+0x3d/0x80 do_syscall_64+0x60/0x90 ? srso_alias_return_thunk+0x5/0x7f? __x64_sys_ioctl+0x72/0xd0? srso_alias_return_thunk+0x5/0x7f? syscall_exit_to_user_mode+0x2b/0x40? srso_alias_return_thunk+0x5/0x7f? do_syscall_64+0x6c/0x90? srso_alias_return_thunk+0x5/0x7f? exit_to_user_mode_prepare+0x142/0x1f0? srso_alias_return_thunk+0x5/0x7f? syscall_exit_to_user_mode+0x2b/0x40? srso_alias_return_thunk+0x5/0x7f? do_syscall_64+0x6c/0x90 Entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7f2ffb321594 C\u00f3digo: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 0 0 90 f3 0f 1e fa 80 3d d5 cd 0d 00 00 74 13 b8 03 00 00 00 0f 05 &lt;48&gt; 3d 00 f0 ff ff 77 3c c3 0f 1f 00 55 48 89 e5 48 83 ec 10 89 7d RSP: 002b:00007ffe8d8eef18 EFLAGS: 00000202 O IG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 00007f2ffba4e668 RCX: 00007f2ffb321594 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007ffe8d8eef40 R08: 0000000000000000 R09: 0 000000000000000 R10: 55c926e3167eae79 R11: 0000000000000202 R12: 0000000000000003 R13: 00007ffe8d8ef030 R14: 0000000000000000 R15: 0000 7f2ffba4e668  CR2: 0000000000000010 ---[ end trace 0000000000000000 ]--- Mueva hrtimer_init a timerlat_fd open() para evitar este problema."
    }
  ],
  "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:N/I:N/A:H",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "configurations": [
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      "nodes": [
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          "negate": false,
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