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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
4fd5f812c23c7deee6425f4a318e85c317cd1d6c to < 20ed01a7b9af6e6a3c33761eebbb710ea6dd49b7affected4fd5f812c23c7deee6425f4a318e85c317cd1d6c to < 7006176a3c863e3e353ce1b8a349ef5bb1b9320eaffected4fd5f812c23c7deee6425f4a318e85c317cd1d6c to < a3fafc974be37319679f36dc4e7cca7db1e02973affected4fd5f812c23c7deee6425f4a318e85c317cd1d6c to < 4954b5359eb141499492fadfab891e28905509e2affected4fd5f812c23c7deee6425f4a318e85c317cd1d6c to < 634f066d02bdb22a26da7deb0c7617ab1a65fc9daffected4fd5f812c23c7deee6425f4a318e85c317cd1d6c to < 985a88bf0b27193522bba7856b1763f428cef19daffected4fd5f812c23c7deee6425f4a318e85c317cd1d6c to < 6ce6f8f8f6316da6f92afe7490bc2f0b654d68e0affected4fd5f812c23c7deee6425f4a318e85c317cd1d6c to < 40e4eb324c59e11fcb927aa46742d28aba6ecb8aaffected
Linux Linux
Default version status: affected
2.6.28affected0 to < 2.6.28unaffected4.9.333 to ≤ 4.9.*unaffected4.14.299 to ≤ 4.14.*unaffected4.19.265 to ≤ 4.19.*unaffected5.4.224 to ≤ 5.4.*unaffected5.10.154 to ≤ 5.10.*unaffected5.15.78 to ≤ 5.15.*unaffected6.0.8 to ≤ 6.0.*unaffected6.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/20ed01a7b9af6e6a3c33761eebbb710ea6dd49b7 ↗
- https://git.kernel.org/stable/c/7006176a3c863e3e353ce1b8a349ef5bb1b9320e ↗
- https://git.kernel.org/stable/c/a3fafc974be37319679f36dc4e7cca7db1e02973 ↗
- https://git.kernel.org/stable/c/4954b5359eb141499492fadfab891e28905509e2 ↗
- https://git.kernel.org/stable/c/634f066d02bdb22a26da7deb0c7617ab1a65fc9d ↗
- https://git.kernel.org/stable/c/985a88bf0b27193522bba7856b1763f428cef19d ↗
- https://git.kernel.org/stable/c/6ce6f8f8f6316da6f92afe7490bc2f0b654d68e0 ↗
- https://git.kernel.org/stable/c/40e4eb324c59e11fcb927aa46742d28aba6ecb8a ↗