Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: phy: mdio: fix memory leak Syzbot reported memory leak in MDIO bus interface, the problem was in wrong state logic. MDIOBUS_ALLOCATED indicates 2 states: 1. Bus is only allocated 2. Bus allocated and __mdiobus_register() fails, but device_register() was called In case of device_register() has been called we should call put_device() to correctly free the memory allocated for this device, but mdiobus_free() calls just kfree(dev) in case of MDIOBUS_ALLOCATED state To avoid this behaviour we need to set bus->state to MDIOBUS_UNREGISTERED _before_ calling device_register(), because put_device() should be called even in case of device_register() failure.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 46abc02175b3c246dd5141d878f565a8725060c9 before 25e9f88c7e3cc35f5e3d3db199660d28a15df639; affected 46abc02175b3c246dd5141d878f565a8725060c9 before 2250392d930bd0d989f24d355d6355b0150256e7; affected 46abc02175b3c246dd5141d878f565a8725060c9 before f4f502a04ee1e543825af78f47eb7785015cd9f6; affected 46abc02175b3c246dd5141d878f565a8725060c9 before 2397b9e118721292429fea8807a698e71b94795f; affected 46abc02175b3c246dd5141d878f565a8725060c9 before 414bb4ead1362ef2c8592db723c017258f213988; affected 46abc02175b3c246dd5141d878f565a8725060c9 before 0d2dd40a7be61b89a7c99dae8ee96389d27b413a; affected 46abc02175b3c246dd5141d878f565a8725060c9 before 064c2616234a7394867c924b5c1303974f3a4f4d; affected 46abc02175b3c246dd5141d878f565a8725060c9 before ca6e11c337daf7925ff8a2aac8e84490a8691905 |
| Linux / Linux | affected 2.6.28; unaffected 0 before 2.6.28; unaffected 4.4.289 through 4.4.*; unaffected 4.9.287 through 4.9.*; unaffected 4.14.251 through 4.14.*; unaffected 4.19.211 through 4.19.*; unaffected 5.4.153 through 5.4.*; unaffected 5.10.73 through 5.10.*; unaffected 5.14.12 through 5.14.*; unaffected 5.15 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/25e9f88c7e3cc35f5e3d3db199660d28a15df639
- https://git.kernel.org/stable/c/2250392d930bd0d989f24d355d6355b0150256e7
- https://git.kernel.org/stable/c/f4f502a04ee1e543825af78f47eb7785015cd9f6
- https://git.kernel.org/stable/c/2397b9e118721292429fea8807a698e71b94795f
- https://git.kernel.org/stable/c/414bb4ead1362ef2c8592db723c017258f213988
- https://git.kernel.org/stable/c/0d2dd40a7be61b89a7c99dae8ee96389d27b413a
- https://git.kernel.org/stable/c/064c2616234a7394867c924b5c1303974f3a4f4d
- https://git.kernel.org/stable/c/ca6e11c337daf7925ff8a2aac8e84490a8691905
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.
- https://git.kernel.org/stable/c/25e9f88c7e3cc35f5e3d3db199660d28a15df639
- https://git.kernel.org/stable/c/2250392d930bd0d989f24d355d6355b0150256e7
- https://git.kernel.org/stable/c/f4f502a04ee1e543825af78f47eb7785015cd9f6
- https://git.kernel.org/stable/c/2397b9e118721292429fea8807a698e71b94795f
- https://git.kernel.org/stable/c/414bb4ead1362ef2c8592db723c017258f213988
- https://git.kernel.org/stable/c/0d2dd40a7be61b89a7c99dae8ee96389d27b413a
- https://git.kernel.org/stable/c/064c2616234a7394867c924b5c1303974f3a4f4d
- https://git.kernel.org/stable/c/ca6e11c337daf7925ff8a2aac8e84490a8691905