CVE-2023-52991

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Source
https://nvd.nist.gov/vuln/detail/CVE-2023-52991
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52991.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-52991
Downstream
Published
2025-03-27T16:43:26Z
Modified
2025-10-21T15:38:28.699285Z
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
net: fix NULL pointer in skb_segment_list
Details

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

net: fix NULL pointer in skbsegmentlist

Commit 3a1296a38d0c ("net: Support GRO/GSO fraglist chaining.") introduced UDP listifyed GRO. The segmentation relies on fraglist being untouched when passing through the network stack. This assumption can be broken sometimes, where fraglist itself gets pulled into linear area, leaving frag_list being NULL. When this happens it can trigger following NULL pointer dereference, and panic the kernel. Reverse the test condition should fix it.

[19185.577801][ C1] BUG: kernel NULL pointer dereference, address: ... [19185.663775][ C1] RIP: 0010:skbsegmentlist+0x1cc/0x390 ... [19185.834644][ C1] Call Trace: [19185.841730][ C1] <TASK> [19185.848563][ C1] _udpgsosegment+0x33e/0x510 [19185.857370][ C1] inetgsosegment+0x15b/0x3e0 [19185.866059][ C1] skbmacgsosegment+0x97/0x110 [19185.874939][ C1] _skbgsosegment+0xb2/0x160 [19185.883646][ C1] udpqueuercvskb+0xc3/0x1d0 [19185.892319][ C1] udpunicastrcvskb+0x75/0x90 [19185.900979][ C1] ipprotocoldeliverrcu+0xd2/0x200 [19185.910003][ C1] iplocaldeliverfinish+0x44/0x60 [19185.918757][ C1] _netifreceiveskbonecore+0x8b/0xa0 [19185.927834][ C1] processbacklog+0x88/0x130 [19185.935840][ C1] _napipoll+0x27/0x150 [19185.943447][ C1] netrxaction+0x27e/0x5f0 [19185.951331][ C1] ? mlx5cqtaskletcb+0x70/0x160 [mlx5core] [19185.960848][ C1] _dosoftirq+0xbc/0x25d [19185.968607][ C1] irqexitrcu+0x83/0xb0 [19185.976247][ C1] commoninterrupt+0x43/0xa0 [19185.984235][ C1] asmcommoninterrupt+0x22/0x40 ... [19186.094106][ C1] </TASK>

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
3a1296a38d0cf62bffb9a03c585cbd5dbf15d596
Fixed
6446369fb9f083ce032448c5047da08e298b22e6
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3a1296a38d0cf62bffb9a03c585cbd5dbf15d596
Fixed
046de74f9af92ae9ffce75fa22a1795223f4fb54
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3a1296a38d0cf62bffb9a03c585cbd5dbf15d596
Fixed
888dad6f3e85e3b2f8389bd6478f181efc72534d
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
3a1296a38d0cf62bffb9a03c585cbd5dbf15d596
Fixed
876e8ca8366735a604bac86ff7e2732fc9d85d2d

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
v5.10.104
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
v5.10.17
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
v5.15.27
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
v5.16
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
v5.5
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

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
v6.1.2
v6.1.3
v6.1.4
v6.1.5
v6.1.6
v6.1.7
v6.1.8
v6.1.9
v6.2-rc1
v6.2-rc2
v6.2-rc3
v6.2-rc4
v6.2-rc5

Database specific

vanir_signatures

[
    {
        "deprecated": false,
        "id": "CVE-2023-52991-4f6b79f0",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@888dad6f3e85e3b2f8389bd6478f181efc72534d",
        "signature_version": "v1",
        "target": {
            "file": "net/core/skbuff.c"
        },
        "signature_type": "Line",
        "digest": {
            "line_hashes": [
                "334863634449971729788342835794817087145",
                "11509869133899065593320574140538590298",
                "117673027873539676958801703453572309898",
                "159515422063868341713988300901737398019",
                "281832942381918037384315044071308941954",
                "223055523425756270324562039504458825804",
                "52088556441571375361594148324882792849",
                "123257029117610434181305559123194713283"
            ],
            "threshold": 0.9
        }
    },
    {
        "deprecated": false,
        "id": "CVE-2023-52991-5a812f02",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@046de74f9af92ae9ffce75fa22a1795223f4fb54",
        "signature_version": "v1",
        "target": {
            "function": "skb_segment_list",
            "file": "net/core/skbuff.c"
        },
        "signature_type": "Function",
        "digest": {
            "function_hash": "236448976974324957891070430235685658771",
            "length": 1547.0
        }
    },
    {
        "deprecated": false,
        "id": "CVE-2023-52991-84e2d3c2",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@888dad6f3e85e3b2f8389bd6478f181efc72534d",
        "signature_version": "v1",
        "target": {
            "function": "skb_segment_list",
            "file": "net/core/skbuff.c"
        },
        "signature_type": "Function",
        "digest": {
            "function_hash": "236448976974324957891070430235685658771",
            "length": 1547.0
        }
    },
    {
        "deprecated": false,
        "id": "CVE-2023-52991-8ba123d6",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@876e8ca8366735a604bac86ff7e2732fc9d85d2d",
        "signature_version": "v1",
        "target": {
            "file": "net/core/skbuff.c"
        },
        "signature_type": "Line",
        "digest": {
            "line_hashes": [
                "334863634449971729788342835794817087145",
                "11509869133899065593320574140538590298",
                "117673027873539676958801703453572309898",
                "159515422063868341713988300901737398019",
                "281832942381918037384315044071308941954",
                "223055523425756270324562039504458825804",
                "52088556441571375361594148324882792849",
                "123257029117610434181305559123194713283"
            ],
            "threshold": 0.9
        }
    },
    {
        "deprecated": false,
        "id": "CVE-2023-52991-95896686",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@046de74f9af92ae9ffce75fa22a1795223f4fb54",
        "signature_version": "v1",
        "target": {
            "file": "net/core/skbuff.c"
        },
        "signature_type": "Line",
        "digest": {
            "line_hashes": [
                "334863634449971729788342835794817087145",
                "11509869133899065593320574140538590298",
                "117673027873539676958801703453572309898",
                "159515422063868341713988300901737398019",
                "281832942381918037384315044071308941954",
                "223055523425756270324562039504458825804",
                "52088556441571375361594148324882792849",
                "123257029117610434181305559123194713283"
            ],
            "threshold": 0.9
        }
    },
    {
        "deprecated": false,
        "id": "CVE-2023-52991-aacb31dd",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@876e8ca8366735a604bac86ff7e2732fc9d85d2d",
        "signature_version": "v1",
        "target": {
            "function": "skb_segment_list",
            "file": "net/core/skbuff.c"
        },
        "signature_type": "Function",
        "digest": {
            "function_hash": "236448976974324957891070430235685658771",
            "length": 1547.0
        }
    },
    {
        "deprecated": false,
        "id": "CVE-2023-52991-b6c33a45",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@6446369fb9f083ce032448c5047da08e298b22e6",
        "signature_version": "v1",
        "target": {
            "function": "skb_segment_list",
            "file": "net/core/skbuff.c"
        },
        "signature_type": "Function",
        "digest": {
            "function_hash": "238419659637503265586381748986747226324",
            "length": 1462.0
        }
    },
    {
        "deprecated": false,
        "id": "CVE-2023-52991-d51493cd",
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@6446369fb9f083ce032448c5047da08e298b22e6",
        "signature_version": "v1",
        "target": {
            "file": "net/core/skbuff.c"
        },
        "signature_type": "Line",
        "digest": {
            "line_hashes": [
                "67374465192091910567986390020223745298",
                "11509869133899065593320574140538590298",
                "117673027873539676958801703453572309898",
                "159515422063868341713988300901737398019",
                "281832942381918037384315044071308941954",
                "223055523425756270324562039504458825804",
                "52088556441571375361594148324882792849",
                "123257029117610434181305559123194713283"
            ],
            "threshold": 0.9
        }
    }
]

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.6.0
Fixed
5.10.167
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.92
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.10