{
  "id": "CVE-2024-36916",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-05-30T16:15:14.963",
  "lastModified": "2024-11-21T09:22:48.607",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-iocost: avoid out of bounds shift\n\nUBSAN catches undefined behavior in blk-iocost, where sometimes\niocg->delay is shifted right by a number that is too large,\nresulting in undefined behavior on some architectures.\n\n[  186.556576] ------------[ cut here ]------------\nUBSAN: shift-out-of-bounds in block/blk-iocost.c:1366:23\nshift exponent 64 is too large for 64-bit type 'u64' (aka 'unsigned long long')\nCPU: 16 PID: 0 Comm: swapper/16 Tainted: G S          E    N 6.9.0-0_fbk700_debug_rc2_kbuilder_0_gc85af715cac0 #1\nHardware name: Quanta Twin Lakes MP/Twin Lakes Passive MP, BIOS F09_3A23 12/08/2020\nCall Trace:\n <IRQ>\n dump_stack_lvl+0x8f/0xe0\n __ubsan_handle_shift_out_of_bounds+0x22c/0x280\n iocg_kick_delay+0x30b/0x310\n ioc_timer_fn+0x2fb/0x1f80\n __run_timer_base+0x1b6/0x250\n...\n\nAvoid that undefined behavior by simply taking the\n\"delay = 0\" branch if the shift is too large.\n\nI am not sure what the symptoms of an undefined value\ndelay will be, but I suspect it could be more than a\nlittle annoying to debug."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: blk-iocost: evita cambios fuera de los l\u00edmites UBSAN detecta un comportamiento indefinido en blk-iocost, donde a veces iocg-&gt;delay se desplaza hacia la derecha en un n\u00famero demasiado grande, lo que resulta en un estado indefinido. comportamiento en algunas arquitecturas. [186.556576] ------------[ cortar aqu\u00ed ]------------ UBSAN: desplazamiento fuera de los l\u00edmites en block/blk-iocost.c:1366 :23 exponente de desplazamiento 64 es demasiado grande para el tipo de 64 bits 'u64' (tambi\u00e9n conocido como 'unsigned long long') CPU: 16 PID: 0 Comm: swapper/16 Tainted: GSEN 6.9.0-0_fbk700_debug_rc2_kbuilder_0_gc85af715cac0 #1 Nombre de hardware: Quanta Twin Lakes MP/Twin Lakes MP pasivo, BIOS F09_3A23 08/12/2020 Seguimiento de llamadas:  dump_stack_lvl+0x8f/0xe0 __ubsan_handle_shift_out_of_bounds+0x22c/0x280 iocg_kick_delay+0x30b/0x310 ioc_timer_fn+0x2fb/0x 1f80 __run_timer_base+0x1b6/0x250 ... Evitar ese comportamiento indefinido simplemente tomando la rama \"retraso = 0\" si el cambio es demasiado grande. No estoy seguro de cu\u00e1les ser\u00e1n los s\u00edntomas de un retraso de valor indefinido, pero sospecho que podr\u00eda ser m\u00e1s que molesto depurarlo."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.5
      }
    ]
  },
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/488dc6808cb8369685f18cee81e88e7052ac153b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/62accf6c1d7b433752cb3591bba8967b7a801ad5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/844fc023e9f14a4fb1de5ae1eaefafd6d69c5fa1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/beaa51b36012fad5a4d3c18b88a617aea7a9b96d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ce0e99cae00e3131872936713b7f55eefd53ab86",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f6add0a6f78dc6360b822ca4b6f9f2f14174c8ca",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/488dc6808cb8369685f18cee81e88e7052ac153b",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://git.kernel.org/stable/c/62accf6c1d7b433752cb3591bba8967b7a801ad5",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://git.kernel.org/stable/c/844fc023e9f14a4fb1de5ae1eaefafd6d69c5fa1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://git.kernel.org/stable/c/beaa51b36012fad5a4d3c18b88a617aea7a9b96d",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://git.kernel.org/stable/c/ce0e99cae00e3131872936713b7f55eefd53ab86",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://git.kernel.org/stable/c/f6add0a6f78dc6360b822ca4b6f9f2f14174c8ca",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://security.netapp.com/advisory/ntap-20240905-0006/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ]
}