fkie_cve-2022-49870
Vulnerability from fkie_nvd
Published
2025-05-01 15:16
Modified
2025-05-02 13:52
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: capabilities: fix undefined behavior in bit shift for CAP_TO_MASK Shifting signed 32-bit value by 31 bits is undefined, so changing significant bit to unsigned. The UBSAN warning calltrace like below: UBSAN: shift-out-of-bounds in security/commoncap.c:1252:2 left shift of 1 by 31 places cannot be represented in type 'int' Call Trace: <TASK> dump_stack_lvl+0x7d/0xa5 dump_stack+0x15/0x1b ubsan_epilogue+0xe/0x4e __ubsan_handle_shift_out_of_bounds+0x1e7/0x20c cap_task_prctl+0x561/0x6f0 security_task_prctl+0x5a/0xb0 __x64_sys_prctl+0x61/0x8f0 do_syscall_64+0x58/0x80 entry_SYSCALL_64_after_hwframe+0x63/0xcd </TASK>
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/151dc8087b5609e53b069c068e3f3ee100efa586
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/27bdb134c043ff32c459d98f16550d0ffa0b3c34
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/46653972e3ea64f79e7f8ae3aa41a4d3fdb70a13
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5661f111a1616ac105ec8cec81bff99b60f847ac
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5b79fa628e2ab789e629a83cd211ef9b4c1a593e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/65b0bc7a0690861812ade523d19f82688ab819dc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dbaab08c8677d598244d21afb7818e44e1c5d826
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fcbd2b336834bd24e1d9454ad5737856470c10d7
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncapabilities: fix undefined behavior in bit shift for CAP_TO_MASK\n\nShifting signed 32-bit value by 31 bits is undefined, so changing\nsignificant bit to unsigned. The UBSAN warning calltrace like below:\n\nUBSAN: shift-out-of-bounds in security/commoncap.c:1252:2\nleft shift of 1 by 31 places cannot be represented in type \u0027int\u0027\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x7d/0xa5\n dump_stack+0x15/0x1b\n ubsan_epilogue+0xe/0x4e\n __ubsan_handle_shift_out_of_bounds+0x1e7/0x20c\n cap_task_prctl+0x561/0x6f0\n security_task_prctl+0x5a/0xb0\n __x64_sys_prctl+0x61/0x8f0\n do_syscall_64+0x58/0x80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n \u003c/TASK\u003e"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: capacidades: corregir comportamiento indefinido en el cambio de bits para CAP_TO_MASK El cambio de un valor con signo de 32 bits por 31 bits no est\u00e1 definido, por lo que se cambia el bit significativo a sin signo. El seguimiento de llamadas de advertencia de UBSAN como se muestra a continuaci\u00f3n: UBSAN: desplazamiento fuera de los l\u00edmites en security/commoncap.c:1252:2 El desplazamiento a la izquierda de 1 por 31 lugares no se puede representar en el tipo \u0027int\u0027 Seguimiento de llamadas: dump_stack_lvl+0x7d/0xa5 dump_stack+0x15/0x1b ubsan_epilogue+0xe/0x4e __ubsan_handle_shift_out_of_bounds+0x1e7/0x20c cap_task_prctl+0x561/0x6f0 security_task_prctl+0x5a/0xb0 __x64_sys_prctl+0x61/0x8f0 do_syscall_64+0x58/0x80 entry_SYSCALL_64_after_hwframe+0x63/0xcd  "
    }
  ],
  "id": "CVE-2022-49870",
  "lastModified": "2025-05-02T13:52:51.693",
  "metrics": {},
  "published": "2025-05-01T15:16:11.937",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/151dc8087b5609e53b069c068e3f3ee100efa586"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/27bdb134c043ff32c459d98f16550d0ffa0b3c34"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/46653972e3ea64f79e7f8ae3aa41a4d3fdb70a13"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5661f111a1616ac105ec8cec81bff99b60f847ac"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5b79fa628e2ab789e629a83cd211ef9b4c1a593e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/65b0bc7a0690861812ade523d19f82688ab819dc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dbaab08c8677d598244d21afb7818e44e1c5d826"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fcbd2b336834bd24e1d9454ad5737856470c10d7"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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