CVE-2023-52927

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Source
https://nvd.nist.gov/vuln/detail/CVE-2023-52927
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52927.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-52927
Downstream
Related
Published
2025-03-14T14:25:59Z
Modified
2025-10-21T15:00:15.547645Z
Summary
netfilter: allow exp not to be removed in nf_ct_find_expectation
Details

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

netfilter: allow exp not to be removed in nfctfind_expectation

Currently nfconntrackin() calling nfctfind_expectation() will remove the exp from the hash table. However, in some scenario, we expect the exp not to be removed when the created ct will not be confirmed, like in OVS and TC conntrack in the following patches.

This patch allows exp not to be removed by setting IPS_CONFIRMED in the status of the tmpl.

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
1bc91a5ddf3eaea0e0ea957cccf3abdcfcace00e
Fixed
3fa58a6fbd1e9e5682d09cdafb08fba004cb12ec
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
1bc91a5ddf3eaea0e0ea957cccf3abdcfcace00e
Fixed
4914109a8e1e494c6aa9852f9e84ec77a5fc643f

Affected versions

v5.*

v5.17
v5.17-rc3
v5.17-rc4
v5.17-rc5
v5.17-rc6
v5.17-rc7
v5.17-rc8
v5.18
v5.18-rc1
v5.18-rc2
v5.18-rc3
v5.18-rc4
v5.18-rc5
v5.18-rc6
v5.18-rc7
v5.19
v5.19-rc1
v5.19-rc2
v5.19-rc3
v5.19-rc4
v5.19-rc5
v5.19-rc6
v5.19-rc7
v5.19-rc8

v6.*

v6.0
v6.0-rc1
v6.0-rc2
v6.0-rc3
v6.0-rc4
v6.0-rc5
v6.0-rc6
v6.0-rc7
v6.1
v6.1-rc1
v6.1-rc2
v6.1-rc3
v6.1-rc4
v6.1-rc5
v6.1-rc6
v6.1-rc7
v6.1-rc8
v6.1.1
v6.1.10
v6.1.100
v6.1.101
v6.1.102
v6.1.103
v6.1.104
v6.1.105
v6.1.106
v6.1.107
v6.1.108
v6.1.109
v6.1.11
v6.1.110
v6.1.111
v6.1.112
v6.1.113
v6.1.114
v6.1.115
v6.1.116
v6.1.117
v6.1.118
v6.1.119
v6.1.12
v6.1.120
v6.1.121
v6.1.122
v6.1.123
v6.1.124
v6.1.125
v6.1.126
v6.1.127
v6.1.128
v6.1.129
v6.1.13
v6.1.14
v6.1.15
v6.1.16
v6.1.17
v6.1.18
v6.1.19
v6.1.2
v6.1.20
v6.1.21
v6.1.22
v6.1.23
v6.1.24
v6.1.25
v6.1.26
v6.1.27
v6.1.28
v6.1.29
v6.1.3
v6.1.30
v6.1.31
v6.1.32
v6.1.33
v6.1.34
v6.1.35
v6.1.36
v6.1.37
v6.1.38
v6.1.39
v6.1.4
v6.1.40
v6.1.41
v6.1.42
v6.1.43
v6.1.44
v6.1.45
v6.1.46
v6.1.47
v6.1.48
v6.1.49
v6.1.5
v6.1.50
v6.1.51
v6.1.52
v6.1.53
v6.1.54
v6.1.55
v6.1.56
v6.1.57
v6.1.58
v6.1.59
v6.1.6
v6.1.60
v6.1.61
v6.1.62
v6.1.63
v6.1.64
v6.1.65
v6.1.66
v6.1.67
v6.1.68
v6.1.69
v6.1.7
v6.1.70
v6.1.71
v6.1.72
v6.1.73
v6.1.74
v6.1.75
v6.1.76
v6.1.77
v6.1.78
v6.1.79
v6.1.8
v6.1.80
v6.1.81
v6.1.82
v6.1.83
v6.1.84
v6.1.85
v6.1.86
v6.1.87
v6.1.88
v6.1.89
v6.1.9
v6.1.90
v6.1.91
v6.1.92
v6.1.93
v6.1.94
v6.1.95
v6.1.96
v6.1.97
v6.1.98
v6.1.99
v6.2
v6.2-rc1
v6.2-rc2
v6.2-rc3
v6.2-rc4
v6.2-rc5
v6.2-rc6
v6.2-rc7
v6.2-rc8
v6.3
v6.3-rc1
v6.3-rc2
v6.3-rc3
v6.3-rc4
v6.3-rc5
v6.3-rc6
v6.3-rc7
v6.4
v6.4-rc1
v6.4-rc2
v6.4-rc3
v6.4-rc4
v6.4-rc5
v6.4-rc6
v6.4-rc7
v6.5-rc1

Database specific

vanir_signatures

[
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4914109a8e1e494c6aa9852f9e84ec77a5fc643f",
        "id": "CVE-2023-52927-08cca45e",
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "file": "net/netfilter/nf_conntrack_expect.c"
        },
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "228750281098312947003085664347667926710",
                "301994370140900696609735385470094657831",
                "215384853548945658142872408159428758503",
                "279889418303842533349964739138271724626",
                "108706389730499368172522871365055473421",
                "185429587397905950068178262939282176716",
                "183540577982566797943167382465495744892",
                "188678778271249597756911515439958217795"
            ]
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3fa58a6fbd1e9e5682d09cdafb08fba004cb12ec",
        "id": "CVE-2023-52927-12a1f6fd",
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "function": "nft_ct_tmpl_alloc_pcpu",
            "file": "net/netfilter/nft_ct.c"
        },
        "signature_type": "Function",
        "digest": {
            "length": 333.0,
            "function_hash": "34119150258317526648568946848140543665"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4914109a8e1e494c6aa9852f9e84ec77a5fc643f",
        "id": "CVE-2023-52927-244af9ea",
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "function": "nf_ct_find_expectation",
            "file": "net/netfilter/nf_conntrack_expect.c"
        },
        "signature_type": "Function",
        "digest": {
            "length": 837.0,
            "function_hash": "54655039955847891789801262754058922533"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4914109a8e1e494c6aa9852f9e84ec77a5fc643f",
        "id": "CVE-2023-52927-34bdb78c",
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "file": "net/netfilter/nf_conntrack_core.c"
        },
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "81178833188468319563751622949412684398",
                "282849745805324806109150515749982589795",
                "40103968226231221693407962193032052729",
                "98343357933855234406072866820183332095"
            ]
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3fa58a6fbd1e9e5682d09cdafb08fba004cb12ec",
        "id": "CVE-2023-52927-5e8c386f",
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "file": "net/netfilter/nft_ct.c"
        },
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "136060423791331593110439369014130298953",
                "105326108311832383068026261778688986044",
                "109553657121387931552902824127413702096",
                "253444509716652244412618872456408573232",
                "284432097826919804537535652834153782998",
                "331902107481330227304924424799816537360",
                "158239821325213822809324991161375894289"
            ]
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4914109a8e1e494c6aa9852f9e84ec77a5fc643f",
        "id": "CVE-2023-52927-84d30dd9",
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "function": "nft_ct_set_zone_eval",
            "file": "net/netfilter/nft_ct.c"
        },
        "signature_type": "Function",
        "digest": {
            "length": 885.0,
            "function_hash": "259291779799305473877582334114295839434"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3fa58a6fbd1e9e5682d09cdafb08fba004cb12ec",
        "id": "CVE-2023-52927-86df771c",
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "function": "init_conntrack",
            "file": "net/netfilter/nf_conntrack_core.c"
        },
        "signature_type": "Function",
        "digest": {
            "length": 2061.0,
            "function_hash": "282130119942355374816115690916184531158"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3fa58a6fbd1e9e5682d09cdafb08fba004cb12ec",
        "id": "CVE-2023-52927-af50d577",
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "file": "net/netfilter/nf_conntrack_core.c"
        },
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "81178833188468319563751622949412684398",
                "282849745805324806109150515749982589795",
                "104428924303533891117691011121753212766",
                "186489849911126129735069870160032312767"
            ]
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3fa58a6fbd1e9e5682d09cdafb08fba004cb12ec",
        "id": "CVE-2023-52927-b1d13d3a",
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "function": "nf_ct_find_expectation",
            "file": "net/netfilter/nf_conntrack_expect.c"
        },
        "signature_type": "Function",
        "digest": {
            "length": 837.0,
            "function_hash": "54655039955847891789801262754058922533"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4914109a8e1e494c6aa9852f9e84ec77a5fc643f",
        "id": "CVE-2023-52927-b59deb86",
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "function": "init_conntrack",
            "file": "net/netfilter/nf_conntrack_core.c"
        },
        "signature_type": "Function",
        "digest": {
            "length": 1954.0,
            "function_hash": "31857549580956457000612915869384549994"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3fa58a6fbd1e9e5682d09cdafb08fba004cb12ec",
        "id": "CVE-2023-52927-cbfbba66",
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "file": "include/net/netfilter/nf_conntrack_expect.h"
        },
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "126333514929699002323360445828459266983",
                "260112486005603436627248786531543652834",
                "334223714926955524838091350527672188860",
                "317927858281631111838631420650250176588"
            ]
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4914109a8e1e494c6aa9852f9e84ec77a5fc643f",
        "id": "CVE-2023-52927-d5d542f4",
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "function": "nft_ct_tmpl_alloc_pcpu",
            "file": "net/netfilter/nft_ct.c"
        },
        "signature_type": "Function",
        "digest": {
            "length": 333.0,
            "function_hash": "34119150258317526648568946848140543665"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3fa58a6fbd1e9e5682d09cdafb08fba004cb12ec",
        "id": "CVE-2023-52927-d86c1681",
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "function": "nft_ct_set_zone_eval",
            "file": "net/netfilter/nft_ct.c"
        },
        "signature_type": "Function",
        "digest": {
            "length": 885.0,
            "function_hash": "259291779799305473877582334114295839434"
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4914109a8e1e494c6aa9852f9e84ec77a5fc643f",
        "id": "CVE-2023-52927-ef009255",
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "file": "net/netfilter/nft_ct.c"
        },
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "136060423791331593110439369014130298953",
                "105326108311832383068026261778688986044",
                "109553657121387931552902824127413702096",
                "253444509716652244412618872456408573232",
                "284432097826919804537535652834153782998",
                "331902107481330227304924424799816537360",
                "158239821325213822809324991161375894289"
            ]
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@3fa58a6fbd1e9e5682d09cdafb08fba004cb12ec",
        "id": "CVE-2023-52927-efb120de",
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "file": "net/netfilter/nf_conntrack_expect.c"
        },
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "228750281098312947003085664347667926710",
                "301994370140900696609735385470094657831",
                "215384853548945658142872408159428758503",
                "279889418303842533349964739138271724626",
                "108706389730499368172522871365055473421",
                "185429587397905950068178262939282176716",
                "183540577982566797943167382465495744892",
                "188678778271249597756911515439958217795"
            ]
        }
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4914109a8e1e494c6aa9852f9e84ec77a5fc643f",
        "id": "CVE-2023-52927-f2cda95e",
        "deprecated": false,
        "signature_version": "v1",
        "target": {
            "file": "include/net/netfilter/nf_conntrack_expect.h"
        },
        "signature_type": "Line",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "126333514929699002323360445828459266983",
                "260112486005603436627248786531543652834",
                "334223714926955524838091350527672188860",
                "317927858281631111838631420650250176588"
            ]
        }
    }
]

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.18.0
Fixed
6.1.130