Vulnerability Database

309,540

Total vulnerabilities in the database

CVE-2022-49907

In the Linux kernel, the following vulnerability has been resolved:

net: mdio: fix undefined behavior in bit shift for __mdiobus_register

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 drivers/net/phy/mdio_bus.c:586:27 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 __mdiobus_register+0x49d/0x4e0 fixed_mdio_bus_init+0xd8/0x12d do_one_initcall+0x76/0x430 kernel_init_freeable+0x3b3/0x422 kernel_init+0x24/0x1e0 ret_from_fork+0x1f/0x30 </TASK>

  • Published: May 1, 2025
  • Updated: Nov 12, 2025
  • CVE: CVE-2022-49907
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.8
  • AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

No CWE or OWASP classifications available.

Software From Fixed in
linux / linux_kernel 2.6.28 4.9.333
linux / linux_kernel 4.10 4.14.299
linux / linux_kernel 4.15 4.19.265
linux / linux_kernel 4.20 5.4.224
linux / linux_kernel 5.5 5.10.154
linux / linux_kernel 5.11 5.15.78
linux / linux_kernel 5.16 6.0.8
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