CVE-2022-49223

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Source
https://nvd.nist.gov/vuln/detail/CVE-2022-49223
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49223.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2022-49223
Downstream
Published
2025-02-26T01:55:54Z
Modified
2025-10-21T09:32:19.477677Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
cxl/port: Hold port reference until decoder release
Details

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

cxl/port: Hold port reference until decoder release

KASAN + DEBUGKOBJECTRELEASE reports a potential use-after-free in cxldecoderrelease() where it goes to reference its parent, a cxlport, to free its id back to port->decoderida.

BUG: KASAN: use-after-free in tocxlport+0x18/0x90 [cxl_core] Read of size 8 at addr ffff888119270908 by task kworker/35:2/379

CPU: 35 PID: 379 Comm: kworker/35:2 Tainted: G OE 5.17.0-rc2+ #198 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015 Workqueue: events kobjectdelayedcleanup Call Trace: <TASK> dumpstacklvl+0x59/0x73 printaddressdescription.constprop.0+0x1f/0x150 ? tocxlport+0x18/0x90 [cxlcore] kasanreport.cold+0x83/0xdf ? tocxlport+0x18/0x90 [cxlcore] tocxlport+0x18/0x90 [cxlcore] cxldecoderrelease+0x2a/0x60 [cxlcore] devicerelease+0x5f/0x100 kobject_cleanup+0x80/0x1c0

The device core only guarantees parent lifetime until all children are unregistered. If a child needs a parent to complete its ->release() callback that child needs to hold a reference to extend the lifetime of the parent.

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
40ba17afdfabb01688c61565dbe02a916241bc05
Fixed
518bb96367123062b48b0a9842f2864249b565f6
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
40ba17afdfabb01688c61565dbe02a916241bc05
Fixed
b0022ca445d5fc4d0c89d15dcd0f855977b22c1d
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
40ba17afdfabb01688c61565dbe02a916241bc05
Fixed
49f2dab77a5e1354f5da6ccdc9346a8212697be2
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
40ba17afdfabb01688c61565dbe02a916241bc05
Fixed
74be98774dfbc5b8b795db726bd772e735d2edd4

Affected versions

v5.*

v5.13
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
v5.15.33
v5.15.34
v5.15.35
v5.15.36
v5.15.37
v5.15.38
v5.15.39
v5.15.4
v5.15.40
v5.15.41
v5.15.42
v5.15.43
v5.15.44
v5.15.45
v5.15.46
v5.15.47
v5.15.48
v5.15.49
v5.15.5
v5.15.50
v5.15.51
v5.15.52
v5.15.53
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

Database specific

vanir_signatures

[
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@74be98774dfbc5b8b795db726bd772e735d2edd4",
        "id": "CVE-2022-49223-0187a67f",
        "deprecated": false,
        "target": {
            "function": "cxl_decoder_release",
            "file": "drivers/cxl/core/port.c"
        },
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "length": 190.0,
            "function_hash": "184949549709428652182050181632607069236"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@49f2dab77a5e1354f5da6ccdc9346a8212697be2",
        "id": "CVE-2022-49223-0b231784",
        "deprecated": false,
        "target": {
            "file": "drivers/cxl/core/port.c"
        },
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "99625847498769245767717041243194565912",
                "180578019265865061007594361637686053136",
                "305065724944873368281596826084358289888",
                "168541421599142187368410167724080616843",
                "256774140306661272040013417035376056186",
                "93542143870594961663905837376129655592",
                "339241739164872928739527557501977843369",
                "53678571442987489994413230172155007517"
            ]
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@49f2dab77a5e1354f5da6ccdc9346a8212697be2",
        "id": "CVE-2022-49223-0f508f8d",
        "deprecated": false,
        "target": {
            "function": "cxl_decoder_release",
            "file": "drivers/cxl/core/port.c"
        },
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "length": 190.0,
            "function_hash": "184949549709428652182050181632607069236"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@b0022ca445d5fc4d0c89d15dcd0f855977b22c1d",
        "id": "CVE-2022-49223-120b3aca",
        "deprecated": false,
        "target": {
            "function": "cxl_decoder_release",
            "file": "drivers/cxl/core/bus.c"
        },
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "length": 190.0,
            "function_hash": "184949549709428652182050181632607069236"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@518bb96367123062b48b0a9842f2864249b565f6",
        "id": "CVE-2022-49223-31a358db",
        "deprecated": false,
        "target": {
            "file": "drivers/cxl/core/bus.c"
        },
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "99625847498769245767717041243194565912",
                "180578019265865061007594361637686053136",
                "305065724944873368281596826084358289888",
                "168541421599142187368410167724080616843",
                "81160888996921898208435095849106230325",
                "148698539667649090167424460440779261139",
                "65543983757371966789125081198656053212"
            ]
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@b0022ca445d5fc4d0c89d15dcd0f855977b22c1d",
        "id": "CVE-2022-49223-369b1f68",
        "deprecated": false,
        "target": {
            "file": "drivers/cxl/core/bus.c"
        },
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "99625847498769245767717041243194565912",
                "180578019265865061007594361637686053136",
                "305065724944873368281596826084358289888",
                "168541421599142187368410167724080616843",
                "256774140306661272040013417035376056186",
                "93542143870594961663905837376129655592",
                "339241739164872928739527557501977843369",
                "53678571442987489994413230172155007517"
            ]
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@49f2dab77a5e1354f5da6ccdc9346a8212697be2",
        "id": "CVE-2022-49223-38e8a6f7",
        "deprecated": false,
        "target": {
            "function": "cxl_decoder_alloc",
            "file": "drivers/cxl/core/port.c"
        },
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "length": 747.0,
            "function_hash": "86152051439172279896103040913885293356"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@518bb96367123062b48b0a9842f2864249b565f6",
        "id": "CVE-2022-49223-551b9a07",
        "deprecated": false,
        "target": {
            "function": "cxl_decoder_release",
            "file": "drivers/cxl/core/bus.c"
        },
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "length": 190.0,
            "function_hash": "184949549709428652182050181632607069236"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@74be98774dfbc5b8b795db726bd772e735d2edd4",
        "id": "CVE-2022-49223-688c075e",
        "deprecated": false,
        "target": {
            "function": "cxl_decoder_alloc",
            "file": "drivers/cxl/core/port.c"
        },
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "length": 1019.0,
            "function_hash": "217436788770895300367712696002382175954"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@74be98774dfbc5b8b795db726bd772e735d2edd4",
        "id": "CVE-2022-49223-834e109b",
        "deprecated": false,
        "target": {
            "file": "drivers/cxl/core/port.c"
        },
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "99625847498769245767717041243194565912",
                "180578019265865061007594361637686053136",
                "197107951296373861132922292001694773466",
                "127904391996218628204500964301577816649",
                "256774140306661272040013417035376056186",
                "93542143870594961663905837376129655592",
                "96242963155928287286163244561039999807",
                "108880836588865442481760738081940301180"
            ]
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@b0022ca445d5fc4d0c89d15dcd0f855977b22c1d",
        "id": "CVE-2022-49223-ddc0e11c",
        "deprecated": false,
        "target": {
            "function": "cxl_decoder_alloc",
            "file": "drivers/cxl/core/bus.c"
        },
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "length": 747.0,
            "function_hash": "86152051439172279896103040913885293356"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@518bb96367123062b48b0a9842f2864249b565f6",
        "id": "CVE-2022-49223-ff49d591",
        "deprecated": false,
        "target": {
            "function": "cxl_decoder_alloc",
            "file": "drivers/cxl/core/bus.c"
        },
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "length": 1207.0,
            "function_hash": "39518428701235621863202642317736300140"
        }
    }
]

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.14.0
Fixed
5.15.54
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
5.16.19
Type
ECOSYSTEM
Events
Introduced
5.17.0
Fixed
5.17.2