Vulnerability Database

309,540

Total vulnerabilities in the database

CVE-2022-49870

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>

  • Published: May 1, 2025
  • Updated: Nov 11, 2025
  • CVE: CVE-2022-49870
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.1
  • AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CWEs:

Software From Fixed in
linux / linux_kernel 2.6.25 4.9.334
linux / linux_kernel 4.10 4.14.300
linux / linux_kernel 4.15 4.19.267
linux / linux_kernel 4.20 5.4.225
linux / linux_kernel 5.5 5.10.155
linux / linux_kernel 5.11 5.15.79
linux / linux_kernel 5.16 6.0.9
linux / linux_kernel 6.1-rc1 6.1-rc1.x
linux / linux_kernel 6.1-rc2 6.1-rc2.x
linux / linux_kernel 6.1-rc3 6.1-rc3.x
linux / linux_kernel 6.1-rc4 6.1-rc4.x