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.
Vendor | Product | Version | CPE |
---|---|---|---|
linux | linux_kernel | * | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
[
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/net/phy/mdio_bus.c"
],
"versions": [
{
"version": "46abc02175b3",
"lessThan": "25e9f88c7e3c",
"status": "affected",
"versionType": "git"
},
{
"version": "46abc02175b3",
"lessThan": "2250392d930b",
"status": "affected",
"versionType": "git"
},
{
"version": "46abc02175b3",
"lessThan": "f4f502a04ee1",
"status": "affected",
"versionType": "git"
},
{
"version": "46abc02175b3",
"lessThan": "2397b9e11872",
"status": "affected",
"versionType": "git"
},
{
"version": "46abc02175b3",
"lessThan": "414bb4ead136",
"status": "affected",
"versionType": "git"
},
{
"version": "46abc02175b3",
"lessThan": "0d2dd40a7be6",
"status": "affected",
"versionType": "git"
},
{
"version": "46abc02175b3",
"lessThan": "064c2616234a",
"status": "affected",
"versionType": "git"
},
{
"version": "46abc02175b3",
"lessThan": "ca6e11c337da",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/net/phy/mdio_bus.c"
],
"versions": [
{
"version": "2.6.28",
"status": "affected"
},
{
"version": "0",
"lessThan": "2.6.28",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "4.4.289",
"lessThanOrEqual": "4.4.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "4.9.287",
"lessThanOrEqual": "4.9.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "4.14.251",
"lessThanOrEqual": "4.14.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "4.19.211",
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.4.153",
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.10.73",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.14.12",
"lessThanOrEqual": "5.14.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.15",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
]
git.kernel.org/stable/c/064c2616234a7394867c924b5c1303974f3a4f4d
git.kernel.org/stable/c/0d2dd40a7be61b89a7c99dae8ee96389d27b413a
git.kernel.org/stable/c/2250392d930bd0d989f24d355d6355b0150256e7
git.kernel.org/stable/c/2397b9e118721292429fea8807a698e71b94795f
git.kernel.org/stable/c/25e9f88c7e3cc35f5e3d3db199660d28a15df639
git.kernel.org/stable/c/414bb4ead1362ef2c8592db723c017258f213988
git.kernel.org/stable/c/ca6e11c337daf7925ff8a2aac8e84490a8691905
git.kernel.org/stable/c/f4f502a04ee1e543825af78f47eb7785015cd9f6