linux: In the Linux kernel, the following vulnerability has been resolved: net: mdio: fix undefined behavior in bit shift f...
CVE-2022-49907 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49907, released May 1, 2025. It is not reported as exploited. Patch Radar priority: High.
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>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 12.15 (bookworm) | 6.0.8-1 | DEBIAN-CVE-2022-49907 | May 1, 2025 |
| linux · Debian 13.5 (trixie) | 6.0.8-1 | DEBIAN-CVE-2022-49907 | May 1, 2025 |
| linux · Debian 14 | 6.0.8-1 | DEBIAN-CVE-2022-49907 | May 1, 2025 |
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