CVE-2022-48815

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Source
https://nvd.nist.gov/vuln/detail/CVE-2022-48815
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-48815.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2022-48815
Downstream
Related
Published
2024-07-16T11:44:03Z
Modified
2025-10-13T14:00:02.512405Z
Summary
net: dsa: bcm_sf2: don't use devres for mdiobus
Details

In the Linux kernel, the following vulnerability has been resolved:

net: dsa: bcm_sf2: don't use devres for mdiobus

As explained in commits: 74b6d7d13307 ("net: dsa: realtek: register the MDIO bus under devres") 5135e96a3dd2 ("net: dsa: don't allocate the slavemiibus using devres")

mdiobusfree() will panic when called from devmmdiobusfree() <- devresreleaseall() <- _devicereleasedriver(), and that mdiobus was not previously unregistered.

The Starfighter 2 is a platform device, so the initial set of constraints that I thought would cause this (I2C or SPI buses which call ->remove on ->shutdown) do not apply. But there is one more which applies here.

If the DSA master itself is on a bus that calls ->remove from ->shutdown (like dpaa2-eth, which is on the fsl-mc bus), there is a device link between the switch and the DSA master, and devicelinksunbindconsumers() will unbind the bcmsf2 switch driver on shutdown.

So the same treatment must be applied to all DSA switch drivers, which is: either use devres for both the mdiobus allocation and registration, or don't use devres at all.

The bcmsf2 driver has the code structure in place for orderly mdiobus removal, so just replace devmmdiobus_alloc() with the non-devres variant, and add manual free where necessary, to ensure that we don't let devres free a still-registered bus.

References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
ac3a68d56651c3dad2c12c7afce065fe15267f44
Fixed
2770b795294ed312375c11ef1d0b810499c66b83
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
ac3a68d56651c3dad2c12c7afce065fe15267f44
Fixed
caabb5f64f5c32fceed93356bb688ef1ec6c5783
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
ac3a68d56651c3dad2c12c7afce065fe15267f44
Fixed
08e1a3554e99a1a5bd2835907381e2383ee85cae
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
ac3a68d56651c3dad2c12c7afce065fe15267f44
Fixed
08f1a20822349004bb9cc1b153ecb516e9f2889d

Affected versions

v5.*

v5.10
v5.10-rc1
v5.10-rc2
v5.10-rc3
v5.10-rc4
v5.10-rc5
v5.10-rc6
v5.10-rc7
v5.10.1
v5.10.10
v5.10.100
v5.10.11
v5.10.12
v5.10.13
v5.10.14
v5.10.15
v5.10.16
v5.10.17
v5.10.18
v5.10.19
v5.10.2
v5.10.20
v5.10.21
v5.10.22
v5.10.23
v5.10.24
v5.10.25
v5.10.26
v5.10.27
v5.10.28
v5.10.29
v5.10.3
v5.10.30
v5.10.31
v5.10.32
v5.10.33
v5.10.34
v5.10.35
v5.10.36
v5.10.37
v5.10.38
v5.10.39
v5.10.4
v5.10.40
v5.10.41
v5.10.42
v5.10.43
v5.10.44
v5.10.45
v5.10.46
v5.10.47
v5.10.48
v5.10.49
v5.10.5
v5.10.50
v5.10.51
v5.10.52
v5.10.53
v5.10.54
v5.10.55
v5.10.56
v5.10.57
v5.10.58
v5.10.59
v5.10.6
v5.10.60
v5.10.61
v5.10.62
v5.10.63
v5.10.64
v5.10.65
v5.10.66
v5.10.67
v5.10.68
v5.10.69
v5.10.7
v5.10.70
v5.10.71
v5.10.72
v5.10.73
v5.10.74
v5.10.75
v5.10.76
v5.10.77
v5.10.78
v5.10.79
v5.10.8
v5.10.80
v5.10.81
v5.10.82
v5.10.83
v5.10.84
v5.10.85
v5.10.86
v5.10.87
v5.10.88
v5.10.89
v5.10.9
v5.10.90
v5.10.91
v5.10.92
v5.10.93
v5.10.94
v5.10.95
v5.10.96
v5.10.97
v5.10.98
v5.10.99
v5.11
v5.11-rc1
v5.11-rc2
v5.11-rc3
v5.11-rc4
v5.11-rc5
v5.11-rc6
v5.11-rc7
v5.12
v5.12-rc1
v5.12-rc1-dontuse
v5.12-rc2
v5.12-rc3
v5.12-rc4
v5.12-rc5
v5.12-rc6
v5.12-rc7
v5.12-rc8
v5.13
v5.13-rc1
v5.13-rc2
v5.13-rc3
v5.13-rc4
v5.13-rc5
v5.13-rc6
v5.13-rc7
v5.14
v5.14-rc1
v5.14-rc2
v5.14-rc3
v5.14-rc4
v5.14-rc5
v5.14-rc6
v5.14-rc7
v5.15
v5.15-rc1
v5.15-rc2
v5.15-rc3
v5.15-rc4
v5.15-rc5
v5.15-rc6
v5.15-rc7
v5.15.1
v5.15.10
v5.15.11
v5.15.12
v5.15.13
v5.15.14
v5.15.15
v5.15.16
v5.15.17
v5.15.18
v5.15.19
v5.15.2
v5.15.20
v5.15.21
v5.15.22
v5.15.23
v5.15.3
v5.15.4
v5.15.5
v5.15.6
v5.15.7
v5.15.8
v5.15.9
v5.16
v5.16-rc1
v5.16-rc2
v5.16-rc3
v5.16-rc4
v5.16-rc5
v5.16-rc6
v5.16-rc7
v5.16-rc8
v5.16.1
v5.16.2
v5.16.3
v5.16.4
v5.16.5
v5.16.6
v5.16.7
v5.16.8
v5.16.9
v5.17-rc1
v5.17-rc2
v5.8
v5.8-rc3
v5.8-rc4
v5.8-rc5
v5.8-rc6
v5.8-rc7
v5.9
v5.9-rc1
v5.9-rc2
v5.9-rc3
v5.9-rc4
v5.9-rc5
v5.9-rc6
v5.9-rc7
v5.9-rc8

Database specific 

{
    "vanir_signatures": [
        {
            "target": {
                "file": "drivers/net/dsa/bcm_sf2.c"
            },
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@caabb5f64f5c32fceed93356bb688ef1ec6c5783",
            "digest": {
                "line_hashes": [
                    "256794540225653596314894557051919625237",
                    "134772557604261061665428928786575823261",
                    "116638853661718697195943050605601668782",
                    "263787601368946939492071209334568038236",
                    "39699854483916782893076197914329303631",
                    "280335079100347273147147079504408207517",
                    "333656321128975281833947221897744220673",
                    "318056353267862636846473723830971504217",
                    "604283777800083375765519000366059359",
                    "305165355260624457794330330834093678210",
                    "211298599119242581215698871079062572409",
                    "336485548543033063345827399815800831996",
                    "132501960254267856340938410274789569420"
                ],
                "threshold": 0.9
            },
            "id": "CVE-2022-48815-2f23412f",
            "signature_version": "v1",
            "deprecated": false,
            "signature_type": "Line"
        },
        {
            "target": {
                "file": "drivers/net/dsa/bcm_sf2.c",
                "function": "bcm_sf2_mdio_register"
            },
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@08e1a3554e99a1a5bd2835907381e2383ee85cae",
            "digest": {
                "length": 1717.0,
                "function_hash": "72638188538479438438485052723977856608"
            },
            "id": "CVE-2022-48815-388d98d2",
            "signature_version": "v1",
            "deprecated": false,
            "signature_type": "Function"
        },
        {
            "target": {
                "file": "drivers/net/dsa/bcm_sf2.c",
                "function": "bcm_sf2_mdio_register"
            },
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@08f1a20822349004bb9cc1b153ecb516e9f2889d",
            "digest": {
                "length": 1717.0,
                "function_hash": "72638188538479438438485052723977856608"
            },
            "id": "CVE-2022-48815-4c6e78de",
            "signature_version": "v1",
            "deprecated": false,
            "signature_type": "Function"
        },
        {
            "target": {
                "file": "drivers/net/dsa/bcm_sf2.c",
                "function": "bcm_sf2_mdio_unregister"
            },
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@08e1a3554e99a1a5bd2835907381e2383ee85cae",
            "digest": {
                "length": 119.0,
                "function_hash": "85427661390537584537961886361337257137"
            },
            "id": "CVE-2022-48815-4e3dbe67",
            "signature_version": "v1",
            "deprecated": false,
            "signature_type": "Function"
        },
        {
            "target": {
                "file": "drivers/net/dsa/bcm_sf2.c"
            },
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@2770b795294ed312375c11ef1d0b810499c66b83",
            "digest": {
                "line_hashes": [
                    "256794540225653596314894557051919625237",
                    "134772557604261061665428928786575823261",
                    "116638853661718697195943050605601668782",
                    "263787601368946939492071209334568038236",
                    "39699854483916782893076197914329303631",
                    "280335079100347273147147079504408207517",
                    "333656321128975281833947221897744220673",
                    "318056353267862636846473723830971504217",
                    "604283777800083375765519000366059359",
                    "305165355260624457794330330834093678210",
                    "211298599119242581215698871079062572409",
                    "336485548543033063345827399815800831996",
                    "132501960254267856340938410274789569420"
                ],
                "threshold": 0.9
            },
            "id": "CVE-2022-48815-6883b131",
            "signature_version": "v1",
            "deprecated": false,
            "signature_type": "Line"
        },
        {
            "target": {
                "file": "drivers/net/dsa/bcm_sf2.c",
                "function": "bcm_sf2_mdio_register"
            },
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@2770b795294ed312375c11ef1d0b810499c66b83",
            "digest": {
                "length": 1717.0,
                "function_hash": "72638188538479438438485052723977856608"
            },
            "id": "CVE-2022-48815-74b621c9",
            "signature_version": "v1",
            "deprecated": false,
            "signature_type": "Function"
        },
        {
            "target": {
                "file": "drivers/net/dsa/bcm_sf2.c",
                "function": "bcm_sf2_mdio_unregister"
            },
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@08f1a20822349004bb9cc1b153ecb516e9f2889d",
            "digest": {
                "length": 119.0,
                "function_hash": "85427661390537584537961886361337257137"
            },
            "id": "CVE-2022-48815-7d96a307",
            "signature_version": "v1",
            "deprecated": false,
            "signature_type": "Function"
        },
        {
            "target": {
                "file": "drivers/net/dsa/bcm_sf2.c",
                "function": "bcm_sf2_mdio_unregister"
            },
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@caabb5f64f5c32fceed93356bb688ef1ec6c5783",
            "digest": {
                "length": 119.0,
                "function_hash": "85427661390537584537961886361337257137"
            },
            "id": "CVE-2022-48815-94fbf238",
            "signature_version": "v1",
            "deprecated": false,
            "signature_type": "Function"
        },
        {
            "target": {
                "file": "drivers/net/dsa/bcm_sf2.c",
                "function": "bcm_sf2_mdio_register"
            },
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@caabb5f64f5c32fceed93356bb688ef1ec6c5783",
            "digest": {
                "length": 1717.0,
                "function_hash": "72638188538479438438485052723977856608"
            },
            "id": "CVE-2022-48815-a775b0a2",
            "signature_version": "v1",
            "deprecated": false,
            "signature_type": "Function"
        },
        {
            "target": {
                "file": "drivers/net/dsa/bcm_sf2.c"
            },
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@08e1a3554e99a1a5bd2835907381e2383ee85cae",
            "digest": {
                "line_hashes": [
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                    "134772557604261061665428928786575823261",
                    "116638853661718697195943050605601668782",
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                ],
                "threshold": 0.9
            },
            "id": "CVE-2022-48815-aed0592d",
            "signature_version": "v1",
            "deprecated": false,
            "signature_type": "Line"
        },
        {
            "target": {
                "file": "drivers/net/dsa/bcm_sf2.c"
            },
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@08f1a20822349004bb9cc1b153ecb516e9f2889d",
            "digest": {
                "line_hashes": [
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                    "116638853661718697195943050605601668782",
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                ],
                "threshold": 0.9
            },
            "id": "CVE-2022-48815-b5478d5e",
            "signature_version": "v1",
            "deprecated": false,
            "signature_type": "Line"
        },
        {
            "target": {
                "file": "drivers/net/dsa/bcm_sf2.c",
                "function": "bcm_sf2_mdio_unregister"
            },
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@2770b795294ed312375c11ef1d0b810499c66b83",
            "digest": {
                "length": 119.0,
                "function_hash": "85427661390537584537961886361337257137"
            },
            "id": "CVE-2022-48815-e6f7e712",
            "signature_version": "v1",
            "deprecated": false,
            "signature_type": "Function"
        }
    ]
}

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.9.0
Fixed
5.10.101
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.24
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
5.16.10