CVE-2024-50163

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Source
https://nvd.nist.gov/vuln/detail/CVE-2024-50163
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-50163.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2024-50163
Downstream
Related
Published
2024-11-07T09:31:40Z
Modified
2025-10-17T16:15:32.955309Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
bpf: Make sure internal and UAPI bpf_redirect flags don't overlap
Details

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

bpf: Make sure internal and UAPI bpf_redirect flags don't overlap

The bpfredirectinfo is shared between the SKB and XDP redirect paths, and the two paths use the same numeric flag values in the ri->flags field (specifically, BPFFBROADCAST == BPFFNEXTHOP). This means that if skb bpfredirectneigh() is used with a non-NULL params argument and, subsequently, an XDP redirect is performed using the same bpfredirectinfo struct, the XDP path will get confused and end up crashing, which syzbot managed to trigger.

With the stack-allocated bpfredirectinfo, the structure is no longer shared between the SKB and XDP paths, so the crash doesn't happen anymore. However, different code paths using identically-numbered flag values in the same struct field still seems like a bit of a mess, so this patch cleans that up by moving the flag definitions together and redefining the three flags in BPFFREDIRECTINTERNAL to not overlap with the flags used for XDP. It also adds a BUILDBUG_ON() check to make sure the overlap is not re-introduced by mistake.

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
e624d4ed4aa8cc3c69d1359b0aaea539203ed266
Fixed
4e1e428533845d48828bd3875c0e92e8565b9962
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
e624d4ed4aa8cc3c69d1359b0aaea539203ed266
Fixed
314dbee9fe4f5cee36435465de52c988d7caa466
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
e624d4ed4aa8cc3c69d1359b0aaea539203ed266
Fixed
0fca5ed4be8e8bfbfb9bd97845af596bab7192d3
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
e624d4ed4aa8cc3c69d1359b0aaea539203ed266
Fixed
cec288e05ceac9a0d3a3a1fd279534b11844c826
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
e624d4ed4aa8cc3c69d1359b0aaea539203ed266
Fixed
09d88791c7cd888d5195c84733caf9183dcfbd16

Affected versions

v5.*

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
v5.15.100
v5.15.101
v5.15.102
v5.15.103
v5.15.104
v5.15.105
v5.15.106
v5.15.107
v5.15.108
v5.15.109
v5.15.11
v5.15.110
v5.15.111
v5.15.112
v5.15.113
v5.15.114
v5.15.115
v5.15.116
v5.15.117
v5.15.118
v5.15.119
v5.15.12
v5.15.120
v5.15.121
v5.15.122
v5.15.123
v5.15.124
v5.15.125
v5.15.126
v5.15.127
v5.15.128
v5.15.129
v5.15.13
v5.15.130
v5.15.131
v5.15.132
v5.15.133
v5.15.134
v5.15.135
v5.15.136
v5.15.137
v5.15.138
v5.15.139
v5.15.14
v5.15.140
v5.15.141
v5.15.142
v5.15.143
v5.15.144
v5.15.145
v5.15.146
v5.15.147
v5.15.148
v5.15.149
v5.15.15
v5.15.150
v5.15.151
v5.15.152
v5.15.153
v5.15.154
v5.15.155
v5.15.156
v5.15.157
v5.15.158
v5.15.159
v5.15.16
v5.15.160
v5.15.161
v5.15.162
v5.15.163
v5.15.164
v5.15.165
v5.15.166
v5.15.167
v5.15.168
v5.15.169
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
v5.15.54
v5.15.55
v5.15.56
v5.15.57
v5.15.58
v5.15.59
v5.15.6
v5.15.60
v5.15.61
v5.15.62
v5.15.63
v5.15.64
v5.15.65
v5.15.66
v5.15.67
v5.15.68
v5.15.69
v5.15.7
v5.15.70
v5.15.71
v5.15.72
v5.15.73
v5.15.74
v5.15.75
v5.15.76
v5.15.77
v5.15.78
v5.15.79
v5.15.8
v5.15.80
v5.15.81
v5.15.82
v5.15.83
v5.15.84
v5.15.85
v5.15.86
v5.15.87
v5.15.88
v5.15.89
v5.15.9
v5.15.90
v5.15.91
v5.15.92
v5.15.93
v5.15.94
v5.15.95
v5.15.96
v5.15.97
v5.15.98
v5.15.99
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
v5.17
v5.17-rc1
v5.17-rc2
v5.17-rc3
v5.17-rc4
v5.17-rc5
v5.17-rc6
v5.17-rc7
v5.17-rc8
v5.18
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
v6.1.12
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
v6.10
v6.10-rc1
v6.10-rc2
v6.10-rc3
v6.10-rc4
v6.10-rc5
v6.10-rc6
v6.10-rc7
v6.11
v6.11-rc1
v6.11-rc2
v6.11-rc3
v6.11-rc4
v6.11-rc5
v6.11-rc6
v6.11-rc7
v6.11.1
v6.11.2
v6.11.3
v6.11.4
v6.11.5
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
v6.5-rc1
v6.5-rc2
v6.5-rc3
v6.5-rc4
v6.5-rc5
v6.5-rc6
v6.5-rc7
v6.6
v6.6-rc1
v6.6-rc2
v6.6-rc3
v6.6-rc4
v6.6-rc5
v6.6-rc6
v6.6-rc7
v6.6.1
v6.6.10
v6.6.11
v6.6.12
v6.6.13
v6.6.14
v6.6.15
v6.6.16
v6.6.17
v6.6.18
v6.6.19
v6.6.2
v6.6.20
v6.6.21
v6.6.22
v6.6.23
v6.6.24
v6.6.25
v6.6.26
v6.6.27
v6.6.28
v6.6.29
v6.6.3
v6.6.30
v6.6.31
v6.6.32
v6.6.33
v6.6.34
v6.6.35
v6.6.36
v6.6.37
v6.6.38
v6.6.39
v6.6.4
v6.6.40
v6.6.41
v6.6.42
v6.6.43
v6.6.44
v6.6.45
v6.6.46
v6.6.47
v6.6.48
v6.6.49
v6.6.5
v6.6.50
v6.6.51
v6.6.52
v6.6.53
v6.6.54
v6.6.55
v6.6.56
v6.6.57
v6.6.58
v6.6.6
v6.6.7
v6.6.8
v6.6.9
v6.7
v6.7-rc1
v6.7-rc2
v6.7-rc3
v6.7-rc4
v6.7-rc5
v6.7-rc6
v6.7-rc7
v6.7-rc8
v6.8
v6.8-rc1
v6.8-rc2
v6.8-rc3
v6.8-rc4
v6.8-rc5
v6.8-rc6
v6.8-rc7
v6.9
v6.9-rc1
v6.9-rc2
v6.9-rc3
v6.9-rc4
v6.9-rc5
v6.9-rc6
v6.9-rc7

Database specific

vanir_signatures

[
    {
        "signature_type": "Line",
        "id": "CVE-2024-50163-0b6c9b06",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@0fca5ed4be8e8bfbfb9bd97845af596bab7192d3",
        "signature_version": "v1",
        "target": {
            "file": "include/uapi/linux/bpf.h"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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                "229342867620578986828597946432906270107"
            ]
        },
        "deprecated": false
    },
    {
        "signature_type": "Function",
        "id": "CVE-2024-50163-0def769d",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@0fca5ed4be8e8bfbfb9bd97845af596bab7192d3",
        "signature_version": "v1",
        "target": {
            "function": "BPF_CALL_3",
            "file": "net/core/filter.c"
        },
        "digest": {
            "function_hash": "219366814127278722297164400422248913042",
            "length": 523.0
        },
        "deprecated": false
    },
    {
        "signature_type": "Line",
        "id": "CVE-2024-50163-169bc976",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@0fca5ed4be8e8bfbfb9bd97845af596bab7192d3",
        "signature_version": "v1",
        "target": {
            "file": "net/core/filter.c"
        },
        "digest": {
            "threshold": 0.9,
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        },
        "deprecated": false
    },
    {
        "signature_type": "Line",
        "id": "CVE-2024-50163-22f2292f",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4e1e428533845d48828bd3875c0e92e8565b9962",
        "signature_version": "v1",
        "target": {
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        "digest": {
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            ]
        },
        "deprecated": false
    },
    {
        "signature_type": "Line",
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        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@09d88791c7cd888d5195c84733caf9183dcfbd16",
        "signature_version": "v1",
        "target": {
            "file": "net/core/filter.c"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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        },
        "deprecated": false
    },
    {
        "signature_type": "Line",
        "id": "CVE-2024-50163-551da7f6",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@314dbee9fe4f5cee36435465de52c988d7caa466",
        "signature_version": "v1",
        "target": {
            "file": "include/uapi/linux/bpf.h"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "170791657915746644106868085955437206680",
                "261662788960117911079247225438508801150",
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                "33533544664468471557930979744770856638",
                "77256644155422760356034807860059255299",
                "306117312568765829829457210611901030818",
                "55396547808159180015647479479848405242",
                "52464718600733809229945139721725134407",
                "32203621523137124589235289856733173334",
                "287816094595006854548874326757414854660",
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                "229342867620578986828597946432906270107"
            ]
        },
        "deprecated": false
    },
    {
        "signature_type": "Function",
        "id": "CVE-2024-50163-5552254f",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@cec288e05ceac9a0d3a3a1fd279534b11844c826",
        "signature_version": "v1",
        "target": {
            "function": "BPF_CALL_3",
            "file": "net/core/filter.c"
        },
        "digest": {
            "function_hash": "219366814127278722297164400422248913042",
            "length": 523.0
        },
        "deprecated": false
    },
    {
        "signature_type": "Line",
        "id": "CVE-2024-50163-652d3e8e",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@09d88791c7cd888d5195c84733caf9183dcfbd16",
        "signature_version": "v1",
        "target": {
            "file": "include/uapi/linux/bpf.h"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "170791657915746644106868085955437206680",
                "261662788960117911079247225438508801150",
                "331209758463528225923592260265885266184",
                "33533544664468471557930979744770856638",
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                "306117312568765829829457210611901030818",
                "55396547808159180015647479479848405242",
                "52464718600733809229945139721725134407",
                "32203621523137124589235289856733173334",
                "287816094595006854548874326757414854660",
                "221117626039606579728728100204557495407",
                "229342867620578986828597946432906270107"
            ]
        },
        "deprecated": false
    },
    {
        "signature_type": "Function",
        "id": "CVE-2024-50163-6a519239",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@09d88791c7cd888d5195c84733caf9183dcfbd16",
        "signature_version": "v1",
        "target": {
            "function": "BPF_CALL_3",
            "file": "net/core/filter.c"
        },
        "digest": {
            "function_hash": "219366814127278722297164400422248913042",
            "length": 523.0
        },
        "deprecated": false
    },
    {
        "signature_type": "Function",
        "id": "CVE-2024-50163-98d6c503",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@314dbee9fe4f5cee36435465de52c988d7caa466",
        "signature_version": "v1",
        "target": {
            "function": "BPF_CALL_3",
            "file": "net/core/filter.c"
        },
        "digest": {
            "function_hash": "219366814127278722297164400422248913042",
            "length": 523.0
        },
        "deprecated": false
    },
    {
        "signature_type": "Line",
        "id": "CVE-2024-50163-a12cb898",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@314dbee9fe4f5cee36435465de52c988d7caa466",
        "signature_version": "v1",
        "target": {
            "file": "net/core/filter.c"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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                "51727874818333412734936891652369786225",
                "213833032144347156172660683324679965495",
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                "176316243713724143479301165128005466959",
                "87835855180021789725859200515875983129",
                "286471692760771463977575278574554576543",
                "207671235374241354263402129548260438520",
                "75256825477349485897317002668794730267"
            ]
        },
        "deprecated": false
    },
    {
        "signature_type": "Line",
        "id": "CVE-2024-50163-b4cac425",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@cec288e05ceac9a0d3a3a1fd279534b11844c826",
        "signature_version": "v1",
        "target": {
            "file": "net/core/filter.c"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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                "51727874818333412734936891652369786225",
                "213833032144347156172660683324679965495",
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                "286471692760771463977575278574554576543",
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                "75256825477349485897317002668794730267"
            ]
        },
        "deprecated": false
    },
    {
        "signature_type": "Line",
        "id": "CVE-2024-50163-c44e894d",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@cec288e05ceac9a0d3a3a1fd279534b11844c826",
        "signature_version": "v1",
        "target": {
            "file": "include/uapi/linux/bpf.h"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "170791657915746644106868085955437206680",
                "261662788960117911079247225438508801150",
                "331209758463528225923592260265885266184",
                "33533544664468471557930979744770856638",
                "77256644155422760356034807860059255299",
                "306117312568765829829457210611901030818",
                "55396547808159180015647479479848405242",
                "52464718600733809229945139721725134407",
                "32203621523137124589235289856733173334",
                "287816094595006854548874326757414854660",
                "221117626039606579728728100204557495407",
                "229342867620578986828597946432906270107"
            ]
        },
        "deprecated": false
    },
    {
        "signature_type": "Line",
        "id": "CVE-2024-50163-d6685dc2",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4e1e428533845d48828bd3875c0e92e8565b9962",
        "signature_version": "v1",
        "target": {
            "file": "net/core/filter.c"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "100628999878544909861582216464755898718",
                "51727874818333412734936891652369786225",
                "213833032144347156172660683324679965495",
                "133515785256573597398967034930542031609",
                "176316243713724143479301165128005466959",
                "87835855180021789725859200515875983129",
                "286471692760771463977575278574554576543",
                "207671235374241354263402129548260438520",
                "75256825477349485897317002668794730267"
            ]
        },
        "deprecated": false
    },
    {
        "signature_type": "Function",
        "id": "CVE-2024-50163-e25a71d0",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4e1e428533845d48828bd3875c0e92e8565b9962",
        "signature_version": "v1",
        "target": {
            "function": "BPF_CALL_3",
            "file": "net/core/filter.c"
        },
        "digest": {
            "function_hash": "219366814127278722297164400422248913042",
            "length": 523.0
        },
        "deprecated": false
    }
]

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.14.0
Fixed
5.15.170
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.115
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.59
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.11.6