CVE-2022-49907

HIGH

MEDIUM Priority: 0.02 BB Relevance: 41/100

Published: 2025-05-01 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local

AC: Low

PR: Low

UI: None

S: Unchanged

C: High

I: High

A: High

Description

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>

Affected Software (13)

Vendor	Product	Version
Linux	Linux	4fd5f812c23c7deee6425f4a318e85c317cd1d6c < 20ed01a7b9af6e6a3c33761eebbb710ea6dd49b7
Linux	Linux	4fd5f812c23c7deee6425f4a318e85c317cd1d6c < 7006176a3c863e3e353ce1b8a349ef5bb1b9320e
Linux	Linux	4fd5f812c23c7deee6425f4a318e85c317cd1d6c < a3fafc974be37319679f36dc4e7cca7db1e02973
Linux	Linux	4fd5f812c23c7deee6425f4a318e85c317cd1d6c < 4954b5359eb141499492fadfab891e28905509e2
Linux	Linux	4fd5f812c23c7deee6425f4a318e85c317cd1d6c < 634f066d02bdb22a26da7deb0c7617ab1a65fc9d
Linux	Linux	4fd5f812c23c7deee6425f4a318e85c317cd1d6c < 985a88bf0b27193522bba7856b1763f428cef19d
Linux	Linux	4fd5f812c23c7deee6425f4a318e85c317cd1d6c < 6ce6f8f8f6316da6f92afe7490bc2f0b654d68e0
Linux	Linux	4fd5f812c23c7deee6425f4a318e85c317cd1d6c < 40e4eb324c59e11fcb927aa46742d28aba6ecb8a
Linux	Linux	2.6.28
linux	linux_kernel	2.6.28 – 4.9.333
linux	linux_kernel	6.1
linux	linux_kernel	6.1
linux	linux_kernel	6.1