CVE-2024-50130

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Source
https://nvd.nist.gov/vuln/detail/CVE-2024-50130
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-50130.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2024-50130
Downstream
Related
Published
2024-11-05T17:10:56Z
Modified
2025-10-15T01:45:32.802981Z
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
netfilter: bpf: must hold reference on net namespace
Details

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

netfilter: bpf: must hold reference on net namespace

BUG: KASAN: slab-use-after-free in _nfunregisternethook+0x640/0x6b0 Read of size 8 at addr ffff8880106fe400 by task repro/72= bpfnflinkrelease+0xda/0x1e0 bpflinkfree+0x139/0x2d0 bpflinkrelease+0x68/0x80 _fput+0x414/0xb60

Eric says: It seems that bpf was able to defer the _nfunregisternethook() after exit()/close() time. Perhaps a netns reference is missing, because the netns has been dismantled/freed already. bpfnflink_attach() does : link->net = net; But I do not see a reference being taken on net.

Add such a reference and release it after hook unreg. Note that I was unable to get syzbot reproducer to work, so I do not know if this resolves this splat.

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
84601d6ee68ae820dec97450934797046d62db4b
Fixed
f41bd93b3e0508edc7ba820357f949071dcc0acc
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
84601d6ee68ae820dec97450934797046d62db4b
Fixed
d0d7939543a1b3bb93af9a18d258a774daf8f162
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
84601d6ee68ae820dec97450934797046d62db4b
Fixed
1230fe7ad3974f7bf6c78901473e039b34d4fb1f

Affected versions

v6.*

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
v6.12-rc1
v6.12-rc2
v6.3
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_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@d0d7939543a1b3bb93af9a18d258a774daf8f162",
            "deprecated": false,
            "id": "CVE-2024-50130-14517dc5",
            "signature_type": "Function",
            "digest": {
                "length": 289.0,
                "function_hash": "301394116118112729889518841025322448362"
            },
            "target": {
                "file": "net/netfilter/nf_bpf_link.c",
                "function": "bpf_nf_link_release"
            }
        },
        {
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@1230fe7ad3974f7bf6c78901473e039b34d4fb1f",
            "deprecated": false,
            "id": "CVE-2024-50130-57bad24c",
            "signature_type": "Function",
            "digest": {
                "length": 1200.0,
                "function_hash": "199997650567854648761163790994510544672"
            },
            "target": {
                "file": "net/netfilter/nf_bpf_link.c",
                "function": "bpf_nf_link_attach"
            }
        },
        {
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@d0d7939543a1b3bb93af9a18d258a774daf8f162",
            "deprecated": false,
            "id": "CVE-2024-50130-7cbffc7c",
            "signature_type": "Function",
            "digest": {
                "length": 1200.0,
                "function_hash": "199997650567854648761163790994510544672"
            },
            "target": {
                "file": "net/netfilter/nf_bpf_link.c",
                "function": "bpf_nf_link_attach"
            }
        },
        {
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@1230fe7ad3974f7bf6c78901473e039b34d4fb1f",
            "deprecated": false,
            "id": "CVE-2024-50130-ab947a8e",
            "signature_type": "Line",
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "337390387045765784565917987904861560078",
                    "230921912482870718071664023502938772841",
                    "18176702465860930897218463883276600011",
                    "143690948464569323398329512731946574237",
                    "125388335833633613957181634424791199092",
                    "156985405311920459386390093868118002129",
                    "8273955081059952374463036426475065718",
                    "205395068252976896875454079283704949736",
                    "333523770422117181556284308284686654141",
                    "33995631870894759694749938231733490730",
                    "223674056423739471302620160323550277443"
                ]
            },
            "target": {
                "file": "net/netfilter/nf_bpf_link.c"
            }
        },
        {
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@1230fe7ad3974f7bf6c78901473e039b34d4fb1f",
            "deprecated": false,
            "id": "CVE-2024-50130-d0c84fc8",
            "signature_type": "Function",
            "digest": {
                "length": 289.0,
                "function_hash": "301394116118112729889518841025322448362"
            },
            "target": {
                "file": "net/netfilter/nf_bpf_link.c",
                "function": "bpf_nf_link_release"
            }
        },
        {
            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@d0d7939543a1b3bb93af9a18d258a774daf8f162",
            "deprecated": false,
            "id": "CVE-2024-50130-dd5f27a9",
            "signature_type": "Line",
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "337390387045765784565917987904861560078",
                    "230921912482870718071664023502938772841",
                    "18176702465860930897218463883276600011",
                    "143690948464569323398329512731946574237",
                    "125388335833633613957181634424791199092",
                    "156985405311920459386390093868118002129",
                    "8273955081059952374463036426475065718",
                    "205395068252976896875454079283704949736",
                    "333523770422117181556284308284686654141",
                    "33995631870894759694749938231733490730",
                    "223674056423739471302620160323550277443"
                ]
            },
            "target": {
                "file": "net/netfilter/nf_bpf_link.c"
            }
        }
    ]
}

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.4.0
Fixed
6.6.59
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.11.6