CVE-2024-43840

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Source
https://nvd.nist.gov/vuln/detail/CVE-2024-43840
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-43840.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2024-43840
Downstream
Related
Published
2024-08-17T09:21:55Z
Modified
2025-10-14T21:34:12.622846Z
Summary
bpf, arm64: Fix trampoline for BPF_TRAMP_F_CALL_ORIG
Details

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

bpf, arm64: Fix trampoline for BPFTRAMPFCALLORIG

When BPFTRAMPFCALLORIG is set, the trampoline calls _bpftrampenter() and _bpftrampexit() functions, passing them the struct bpftrampimage *im pointer as an argument in R0.

The trampoline generation code uses emitaddrmovi64() to emit instructions for moving the bpftrampimage address into R0, but emitaddrmovi64() assumes the address to be in the vmalloc() space and uses only 48 bits. Because bpftrampimage is allocated using kzalloc(), its address can use more than 48-bits, in this case the trampoline will pass an invalid address to _bpftramp_enter/exit() causing a kernel crash.

Fix this by using emita64movi64() in place of emitaddrmovi64() as it can work with addresses that are greater than 48-bits.

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
efc9909fdce00a827a37609628223cd45bf95d0b
Fixed
077149478497b2f00ff4fd9da2c892defa6418d8
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
efc9909fdce00a827a37609628223cd45bf95d0b
Fixed
d9664e6ff040798a46cdc5d401064f55b8676c83
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
efc9909fdce00a827a37609628223cd45bf95d0b
Fixed
6d218fcc707d6b2c3616b6cd24b948fd4825cfec
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
efc9909fdce00a827a37609628223cd45bf95d0b
Fixed
19d3c179a37730caf600a97fed3794feac2b197b

Affected versions

v5.*

v5.19
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
v6.1.130
v6.1.131
v6.1.132
v6.1.133
v6.1.134
v6.1.135
v6.1.136
v6.1.137
v6.1.138
v6.1.139
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
v6.10.1
v6.10.2
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
v6.6.59
v6.6.6
v6.6.60
v6.6.61
v6.6.62
v6.6.63
v6.6.64
v6.6.65
v6.6.66
v6.6.67
v6.6.68
v6.6.69
v6.6.7
v6.6.70
v6.6.71
v6.6.72
v6.6.73
v6.6.74
v6.6.75
v6.6.76
v6.6.77
v6.6.78
v6.6.79
v6.6.8
v6.6.80
v6.6.81
v6.6.82
v6.6.83
v6.6.84
v6.6.85
v6.6.86
v6.6.87
v6.6.88
v6.6.89
v6.6.9
v6.6.90
v6.6.91
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": [
        {
            "id": "CVE-2024-43840-2566b499",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@19d3c179a37730caf600a97fed3794feac2b197b",
            "deprecated": false,
            "signature_version": "v1",
            "signature_type": "Line",
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "87734733830041605748040263978728874974",
                    "207004586410863497480313454517308227009",
                    "304117517273641319754124602887234041504",
                    "158164141014362989020906069429791128227",
                    "338001186957738937695806553374157630869",
                    "275223025306013203008782981438338971503",
                    "308916144846783854593658814393229937927",
                    "162414486627456809319742837841287820427"
                ]
            },
            "target": {
                "file": "arch/arm64/net/bpf_jit_comp.c"
            }
        },
        {
            "id": "CVE-2024-43840-68d454ba",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@6d218fcc707d6b2c3616b6cd24b948fd4825cfec",
            "deprecated": false,
            "signature_version": "v1",
            "signature_type": "Line",
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "87734733830041605748040263978728874974",
                    "207004586410863497480313454517308227009",
                    "304117517273641319754124602887234041504",
                    "158164141014362989020906069429791128227",
                    "338001186957738937695806553374157630869",
                    "275223025306013203008782981438338971503",
                    "308916144846783854593658814393229937927",
                    "162414486627456809319742837841287820427"
                ]
            },
            "target": {
                "file": "arch/arm64/net/bpf_jit_comp.c"
            }
        },
        {
            "id": "CVE-2024-43840-ecf372be",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@077149478497b2f00ff4fd9da2c892defa6418d8",
            "deprecated": false,
            "signature_version": "v1",
            "signature_type": "Line",
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "87734733830041605748040263978728874974",
                    "207004586410863497480313454517308227009",
                    "304117517273641319754124602887234041504",
                    "158164141014362989020906069429791128227",
                    "254353256818541519437110933753308447956",
                    "185757718472694027362158513879143685861",
                    "284915968111413272903468627794703725687",
                    "162414486627456809319742837841287820427"
                ]
            },
            "target": {
                "file": "arch/arm64/net/bpf_jit_comp.c"
            }
        },
        {
            "id": "CVE-2024-43840-fd2f6621",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@d9664e6ff040798a46cdc5d401064f55b8676c83",
            "deprecated": false,
            "signature_version": "v1",
            "signature_type": "Line",
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "87734733830041605748040263978728874974",
                    "207004586410863497480313454517308227009",
                    "304117517273641319754124602887234041504",
                    "158164141014362989020906069429791128227",
                    "254353256818541519437110933753308447956",
                    "185757718472694027362158513879143685861",
                    "284915968111413272903468627794703725687",
                    "162414486627456809319742837841287820427"
                ]
            },
            "target": {
                "file": "arch/arm64/net/bpf_jit_comp.c"
            }
        }
    ]
}

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.0.0
Fixed
6.1.140
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.92
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.10.3