CVE-2022-48909

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Source
https://nvd.nist.gov/vuln/detail/CVE-2022-48909
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-48909.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2022-48909
Downstream
Related
Published
2024-08-22T01:30:51Z
Modified
2025-10-08T07:11:39.627508Z
Summary
net/smc: fix connection leak
Details

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

net/smc: fix connection leak

There's a potential leak issue under following execution sequence :

smcrelease smcconnectwork if (sk->skstate == SMCINIT) sendclcconfirim tcpabort(); ... sk.skstate = SMCACTIVE smccloseactive switch(sk->skstate) { ... case SMCACTIVE: smcclosefinal() // then wait peer closed

Unfortunately, tcp_abort() may discard CLC CONFIRM messages that are still in the tcp send buffer, in which case our connection token cannot be delivered to the server side, which means that we cannot get a passive close message at all. Therefore, it is impossible for the to be disconnected at all.

This patch tries a very simple way to avoid this issue, once the state has changed to SMCACTIVE after tcpabort(), we can actively abort the smc connection, considering that the state is SMCINIT before tcpabort(), abandoning the complete disconnection process should not cause too much problem.

In fact, this problem may exist as long as the CLC CONFIRM message is not received by the server. Whether a timer should be added after smcclosefinal() needs to be discussed in the future. But even so, this patch provides a faster release for connection in above case, it should also be valuable.

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
39f41f367b08650e9aa314e3a13fb6dda1e9eec7
Fixed
2e8d465b83db307f04ad265848f8ab3f78f6918f
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
39f41f367b08650e9aa314e3a13fb6dda1e9eec7
Fixed
80895b6f9154fb22d36fab311ccbb75503a2c87b
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
39f41f367b08650e9aa314e3a13fb6dda1e9eec7
Fixed
e98d46ccfa84b35a9e4b1ccdd83961b41a5d7ce5
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
39f41f367b08650e9aa314e3a13fb6dda1e9eec7
Fixed
9f1c50cf39167ff71dc5953a3234f3f6eeb8fcb5

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
v5.10.101
v5.10.102
v5.10.103
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
v5.15.24
v5.15.25
v5.15.26
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
v5.16.10
v5.16.11
v5.16.12
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
v5.17-rc3
v5.17-rc4
v5.17-rc5
v5.2
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": [
        {
            "signature_type": "Function",
            "deprecated": false,
            "signature_version": "v1",
            "digest": {
                "length": 599.0,
                "function_hash": "20395642562117290774235861860223905106"
            },
            "id": "CVE-2022-48909-2348e9cc",
            "target": {
                "file": "net/smc/af_smc.c",
                "function": "smc_release"
            },
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@e98d46ccfa84b35a9e4b1ccdd83961b41a5d7ce5"
        },
        {
            "signature_type": "Function",
            "deprecated": false,
            "signature_version": "v1",
            "digest": {
                "length": 599.0,
                "function_hash": "20395642562117290774235861860223905106"
            },
            "id": "CVE-2022-48909-56d0d36d",
            "target": {
                "file": "net/smc/af_smc.c",
                "function": "smc_release"
            },
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@80895b6f9154fb22d36fab311ccbb75503a2c87b"
        },
        {
            "signature_type": "Function",
            "deprecated": false,
            "signature_version": "v1",
            "digest": {
                "length": 599.0,
                "function_hash": "20395642562117290774235861860223905106"
            },
            "id": "CVE-2022-48909-6695065e",
            "target": {
                "file": "net/smc/af_smc.c",
                "function": "smc_release"
            },
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@9f1c50cf39167ff71dc5953a3234f3f6eeb8fcb5"
        },
        {
            "signature_type": "Function",
            "deprecated": false,
            "signature_version": "v1",
            "digest": {
                "length": 599.0,
                "function_hash": "20395642562117290774235861860223905106"
            },
            "id": "CVE-2022-48909-74578058",
            "target": {
                "file": "net/smc/af_smc.c",
                "function": "smc_release"
            },
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@2e8d465b83db307f04ad265848f8ab3f78f6918f"
        },
        {
            "signature_type": "Line",
            "deprecated": false,
            "signature_version": "v1",
            "digest": {
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                    "223840298403565693376459140552480594005",
                    "18977317567258336471003594030557422598"
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            },
            "id": "CVE-2022-48909-99129591",
            "target": {
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            },
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@80895b6f9154fb22d36fab311ccbb75503a2c87b"
        },
        {
            "signature_type": "Line",
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            "signature_version": "v1",
            "digest": {
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                    "223840298403565693376459140552480594005",
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            },
            "id": "CVE-2022-48909-c372b2f0",
            "target": {
                "file": "net/smc/af_smc.c"
            },
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@9f1c50cf39167ff71dc5953a3234f3f6eeb8fcb5"
        },
        {
            "signature_type": "Line",
            "deprecated": false,
            "signature_version": "v1",
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
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                    "86017233940421529314627013770286466799",
                    "257599962123563237257317139606952264977",
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                    "223840298403565693376459140552480594005",
                    "18977317567258336471003594030557422598"
                ]
            },
            "id": "CVE-2022-48909-c7d5fdba",
            "target": {
                "file": "net/smc/af_smc.c"
            },
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@e98d46ccfa84b35a9e4b1ccdd83961b41a5d7ce5"
        },
        {
            "signature_type": "Line",
            "deprecated": false,
            "signature_version": "v1",
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
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            },
            "id": "CVE-2022-48909-dffd028d",
            "target": {
                "file": "net/smc/af_smc.c"
            },
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@2e8d465b83db307f04ad265848f8ab3f78f6918f"
        }
    ]
}

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.3.0
Fixed
5.10.104
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.27
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
5.16.13