CVE-2022-49219

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Source
https://nvd.nist.gov/vuln/detail/CVE-2022-49219
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49219.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2022-49219
Downstream
Related
Published
2025-02-26T01:55:52Z
Modified
2025-10-13T16:02:22.283977Z
Summary
vfio/pci: fix memory leak during D3hot to D0 transition
Details

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

vfio/pci: fix memory leak during D3hot to D0 transition

If 'vfiopcicoredevice::needspmrestore' is set (PCI device does not have NoSoftReset bit set in its PMCSR config register), then the current PCI state will be saved locally in 'vfiopcicoredevice::pmsave' during D0->D3hot transition and same will be restored back during D3hot->D0 transition. For saving the PCI state locally, pcistoresavedstate() is being used and the pciloadandfreesaved_state() will free the allocated memory.

But for reset related IOCTLs, vfio driver calls PCI reset-related API's which will internally change the PCI power state back to D0. So, when the guest resumes, then it will get the current state as D0 and it will skip the call to vfiopcisetpowerstate() for changing the power state to D0 explicitly. In this case, the memory pointed by 'pmsave' will never be freed. In a malicious sequence, the state changing to D3hot followed by VFIODEVICERESET/VFIODEVICEPCIHOT_RESET can be run in a loop and it can cause an OOM situation.

This patch frees the earlier allocated memory first before overwriting 'pm_save' to prevent the mentioned memory leak.

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
51ef3a004b1eb6241e56b3aa8495769a092a4dc2
Fixed
da426ad86027b849b877d4628b277ffbbd2f5325
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
51ef3a004b1eb6241e56b3aa8495769a092a4dc2
Fixed
4319f17fb8264ba39352b611dfa913a4d8c1d1a0
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
51ef3a004b1eb6241e56b3aa8495769a092a4dc2
Fixed
26ddd196e9eb264da8e1bdc4df8a94d62581c8b5
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
51ef3a004b1eb6241e56b3aa8495769a092a4dc2
Fixed
c8a1f8bd586ee31020614b8d48b702ece3e2ae44
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
51ef3a004b1eb6241e56b3aa8495769a092a4dc2
Fixed
eadf88ecf6ac7d6a9f47a76c6055d9a1987a8991

Affected versions

v5.*

v5.0
v5.0-rc6
v5.0-rc7
v5.0-rc8
v5.1
v5.1-rc1
v5.1-rc2
v5.1-rc3
v5.1-rc4
v5.1-rc5
v5.1-rc6
v5.1-rc7
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
v5.10.101
v5.10.102
v5.10.103
v5.10.104
v5.10.105
v5.10.106
v5.10.107
v5.10.108
v5.10.109
v5.10.11
v5.10.110
v5.10.111
v5.10.112
v5.10.113
v5.10.114
v5.10.115
v5.10.116
v5.10.117
v5.10.118
v5.10.119
v5.10.12
v5.10.120
v5.10.121
v5.10.122
v5.10.123
v5.10.124
v5.10.125
v5.10.126
v5.10.127
v5.10.128
v5.10.129
v5.10.13
v5.10.130
v5.10.131
v5.10.132
v5.10.133
v5.10.134
v5.10.135
v5.10.136
v5.10.137
v5.10.138
v5.10.139
v5.10.14
v5.10.140
v5.10.141
v5.10.142
v5.10.143
v5.10.144
v5.10.145
v5.10.146
v5.10.147
v5.10.148
v5.10.149
v5.10.15
v5.10.150
v5.10.151
v5.10.152
v5.10.153
v5.10.154
v5.10.155
v5.10.156
v5.10.157
v5.10.158
v5.10.159
v5.10.16
v5.10.160
v5.10.161
v5.10.162
v5.10.163
v5.10.164
v5.10.165
v5.10.166
v5.10.167
v5.10.168
v5.10.169
v5.10.17
v5.10.170
v5.10.171
v5.10.172
v5.10.173
v5.10.174
v5.10.175
v5.10.176
v5.10.177
v5.10.178
v5.10.179
v5.10.18
v5.10.180
v5.10.181
v5.10.182
v5.10.183
v5.10.184
v5.10.185
v5.10.186
v5.10.187
v5.10.188
v5.10.189
v5.10.19
v5.10.190
v5.10.191
v5.10.192
v5.10.193
v5.10.194
v5.10.195
v5.10.196
v5.10.197
v5.10.198
v5.10.199
v5.10.2
v5.10.20
v5.10.200
v5.10.201
v5.10.202
v5.10.203
v5.10.204
v5.10.205
v5.10.206
v5.10.207
v5.10.208
v5.10.209
v5.10.21
v5.10.210
v5.10.211
v5.10.212
v5.10.213
v5.10.214
v5.10.215
v5.10.216
v5.10.217
v5.10.218
v5.10.219
v5.10.22
v5.10.220
v5.10.221
v5.10.222
v5.10.223
v5.10.224
v5.10.225
v5.10.226
v5.10.227
v5.10.228
v5.10.229
v5.10.23
v5.10.230
v5.10.231
v5.10.232
v5.10.233
v5.10.234
v5.10.235
v5.10.236
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
v5.15.24
v5.15.25
v5.15.26
v5.15.27
v5.15.28
v5.15.29
v5.15.3
v5.15.30
v5.15.31
v5.15.32
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
v5.16.10
v5.16.11
v5.16.12
v5.16.13
v5.16.14
v5.16.15
v5.16.16
v5.16.17
v5.16.18
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
v5.17-rc1
v5.17-rc2
v5.17-rc3
v5.17-rc4
v5.17-rc5
v5.17-rc6
v5.17-rc7
v5.17-rc8
v5.17.1
v5.2
v5.2-rc1
v5.2-rc2
v5.2-rc3
v5.2-rc4
v5.2-rc5
v5.2-rc6
v5.2-rc7
v5.3
v5.3-rc1
v5.3-rc2
v5.3-rc3
v5.3-rc4
v5.3-rc5
v5.3-rc6
v5.3-rc7
v5.3-rc8
v5.4
v5.4-rc1
v5.4-rc2
v5.4-rc3
v5.4-rc4
v5.4-rc5
v5.4-rc6
v5.4-rc7
v5.4-rc8
v5.5
v5.5-rc1
v5.5-rc2
v5.5-rc3
v5.5-rc4
v5.5-rc5
v5.5-rc6
v5.5-rc7
v5.6
v5.6-rc1
v5.6-rc2
v5.6-rc3
v5.6-rc4
v5.6-rc5
v5.6-rc6
v5.6-rc7
v5.7
v5.7-rc1
v5.7-rc2
v5.7-rc3
v5.7-rc4
v5.7-rc5
v5.7-rc6
v5.7-rc7
v5.8
v5.8-rc1
v5.8-rc2
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/vfio/pci/vfio_pci_core.c"
            },
            "id": "CVE-2022-49219-05a16ee4",
            "deprecated": false,
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "317859989886633185217066232959596251309",
                    "254431853759977568619544065497940237881",
                    "56854560161702525238075544847693738329",
                    "151411013562022807623817551098057074041"
                ]
            },
            "signature_version": "v1",
            "signature_type": "Line",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4319f17fb8264ba39352b611dfa913a4d8c1d1a0"
        },
        {
            "target": {
                "function": "vfio_pci_set_power_state",
                "file": "drivers/vfio/pci/vfio_pci.c"
            },
            "id": "CVE-2022-49219-1cfc8df5",
            "deprecated": false,
            "digest": {
                "length": 565.0,
                "function_hash": "283626623538292268285153772704021753657"
            },
            "signature_version": "v1",
            "signature_type": "Function",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@da426ad86027b849b877d4628b277ffbbd2f5325"
        },
        {
            "target": {
                "file": "drivers/vfio/pci/vfio_pci.c"
            },
            "id": "CVE-2022-49219-26cdb28b",
            "deprecated": false,
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "317859989886633185217066232959596251309",
                    "254431853759977568619544065497940237881",
                    "56854560161702525238075544847693738329",
                    "151411013562022807623817551098057074041"
                ]
            },
            "signature_version": "v1",
            "signature_type": "Line",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@da426ad86027b849b877d4628b277ffbbd2f5325"
        },
        {
            "target": {
                "file": "drivers/vfio/pci/vfio_pci_core.c"
            },
            "id": "CVE-2022-49219-5778639b",
            "deprecated": false,
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "317859989886633185217066232959596251309",
                    "254431853759977568619544065497940237881",
                    "56854560161702525238075544847693738329",
                    "151411013562022807623817551098057074041"
                ]
            },
            "signature_version": "v1",
            "signature_type": "Line",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@c8a1f8bd586ee31020614b8d48b702ece3e2ae44"
        },
        {
            "target": {
                "function": "vfio_pci_set_power_state",
                "file": "drivers/vfio/pci/vfio_pci_core.c"
            },
            "id": "CVE-2022-49219-6b56f87d",
            "deprecated": false,
            "digest": {
                "length": 565.0,
                "function_hash": "283626623538292268285153772704021753657"
            },
            "signature_version": "v1",
            "signature_type": "Function",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@eadf88ecf6ac7d6a9f47a76c6055d9a1987a8991"
        },
        {
            "target": {
                "function": "vfio_pci_set_power_state",
                "file": "drivers/vfio/pci/vfio_pci_core.c"
            },
            "id": "CVE-2022-49219-7e125cdf",
            "deprecated": false,
            "digest": {
                "length": 565.0,
                "function_hash": "283626623538292268285153772704021753657"
            },
            "signature_version": "v1",
            "signature_type": "Function",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@26ddd196e9eb264da8e1bdc4df8a94d62581c8b5"
        },
        {
            "target": {
                "function": "vfio_pci_set_power_state",
                "file": "drivers/vfio/pci/vfio_pci_core.c"
            },
            "id": "CVE-2022-49219-92b5276a",
            "deprecated": false,
            "digest": {
                "length": 565.0,
                "function_hash": "283626623538292268285153772704021753657"
            },
            "signature_version": "v1",
            "signature_type": "Function",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4319f17fb8264ba39352b611dfa913a4d8c1d1a0"
        },
        {
            "target": {
                "file": "drivers/vfio/pci/vfio_pci_core.c"
            },
            "id": "CVE-2022-49219-a9743f01",
            "deprecated": false,
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "317859989886633185217066232959596251309",
                    "254431853759977568619544065497940237881",
                    "56854560161702525238075544847693738329",
                    "151411013562022807623817551098057074041"
                ]
            },
            "signature_version": "v1",
            "signature_type": "Line",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@26ddd196e9eb264da8e1bdc4df8a94d62581c8b5"
        },
        {
            "target": {
                "function": "vfio_pci_set_power_state",
                "file": "drivers/vfio/pci/vfio_pci_core.c"
            },
            "id": "CVE-2022-49219-b0b529c6",
            "deprecated": false,
            "digest": {
                "length": 565.0,
                "function_hash": "283626623538292268285153772704021753657"
            },
            "signature_version": "v1",
            "signature_type": "Function",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@c8a1f8bd586ee31020614b8d48b702ece3e2ae44"
        },
        {
            "target": {
                "file": "drivers/vfio/pci/vfio_pci_core.c"
            },
            "id": "CVE-2022-49219-d83b5fcd",
            "deprecated": false,
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "317859989886633185217066232959596251309",
                    "254431853759977568619544065497940237881",
                    "56854560161702525238075544847693738329",
                    "151411013562022807623817551098057074041"
                ]
            },
            "signature_version": "v1",
            "signature_type": "Line",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@eadf88ecf6ac7d6a9f47a76c6055d9a1987a8991"
        }
    ]
}

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.1.0
Fixed
5.10.237
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.33
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
5.16.19
Type
ECOSYSTEM
Events
Introduced
5.17.0
Fixed
5.17.2