CVE-2024-36478

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Source
https://nvd.nist.gov/vuln/detail/CVE-2024-36478
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-36478.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2024-36478
Downstream
Related
Published
2024-06-21T10:18:09Z
Modified
2025-10-15T11:42:32.814698Z
Summary
null_blk: fix null-ptr-dereference while configuring 'power' and 'submit_queues'
Details

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

nullblk: fix null-ptr-dereference while configuring 'power' and 'submitqueues'

Writing 'power' and 'submit_queues' concurrently will trigger kernel panic:

Test script:

modprobe nullblk nrdevices=0 mkdir -p /sys/kernel/config/nullb/nullb0 while true; do echo 1 > submitqueues; echo 4 > submitqueues; done & while true; do echo 1 > power; echo 0 > power; done

Test result:

BUG: kernel NULL pointer dereference, address: 0000000000000148 Oops: 0000 [#1] PREEMPT SMP RIP: 0010:_lockacquire+0x41d/0x28f0 Call Trace: <TASK> lockacquire+0x121/0x450 downwrite+0x5f/0x1d0 simplerecursiveremoval+0x12f/0x5c0 blkmqdebugfsunregisterhctxs+0x7c/0x100 blkmqupdatenrhwqueues+0x4a3/0x720 nullbupdatenrhwqueues+0x71/0xf0 [nullblk] nullbdevicesubmitqueuesstore+0x79/0xf0 [nullblk] configfswriteiter+0x119/0x1e0 vfswrite+0x326/0x730 ksys_write+0x74/0x150

This is because delgendisk() can concurrent with blkmqupdatenrhwqueues():

nullbdevicepowerstore nullbapplysubmitqueues nulldeldev delgendisk nullbupdatenrhwqueues if (!dev->nullb) // still set while gendisk is deleted return 0 blkmqupdatenrhwqueues dev->nullb = NULL

Fix this problem by resuing the global mutex to protect nullbdevicepowerstore() and nullbupdatenrhw_queues() from configfs.

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
45919fbfe1c487c17ea1d198534339a5e8abeae3
Fixed
1d4c8baef435c98e8d5aa7027dc5a9f70834ba16
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
45919fbfe1c487c17ea1d198534339a5e8abeae3
Fixed
aaadb755f2d684f715a6eb85cb7243aa0c67dfa9
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
45919fbfe1c487c17ea1d198534339a5e8abeae3
Fixed
5d0495473ee4c1d041b5a917f10446a22c047f47
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
45919fbfe1c487c17ea1d198534339a5e8abeae3
Fixed
a2db328b0839312c169eb42746ec46fc1ab53ed2

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
v5.11
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
v5.16
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
v5.4
v5.4-rc3
v5.4-rc4
v5.4-rc5
v5.4-rc6
v5.4-rc7
v5.4-rc8
v5.5
v5.5-rc1
v5.5-rc2
v5.5-rc3
v5.5-rc4
v5.5-rc5
v5.5-rc6
v5.5-rc7
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
v6.1.10
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
v6.1.12
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
v6.2
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
v6.6.6
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
v6.9.1
v6.9.2
v6.9.3

Database specific 

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            "id": "CVE-2024-36478-44cc720d",
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            "target": {
                "file": "drivers/block/null_blk/main.c"
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                "threshold": 0.9
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            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@1d4c8baef435c98e8d5aa7027dc5a9f70834ba16"
        },
        {
            "id": "CVE-2024-36478-4dcccb88",
            "signature_type": "Function",
            "target": {
                "file": "drivers/block/null_blk/main.c",
                "function": "null_add_dev"
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            "digest": {
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        },
        {
            "id": "CVE-2024-36478-660314f9",
            "signature_type": "Function",
            "target": {
                "file": "drivers/block/null_blk/main.c",
                "function": "nullb_apply_poll_queues"
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                "function_hash": "99930156965785617790595814761510869411"
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            "signature_version": "v1",
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        },
        {
            "id": "CVE-2024-36478-6d1ef2d8",
            "signature_type": "Function",
            "target": {
                "file": "drivers/block/null_blk/main.c",
                "function": "nullb_apply_poll_queues"
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                "function_hash": "99930156965785617790595814761510869411"
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            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@aaadb755f2d684f715a6eb85cb7243aa0c67dfa9"
        },
        {
            "id": "CVE-2024-36478-8bb371bf",
            "signature_type": "Function",
            "target": {
                "file": "drivers/block/null_blk/main.c",
                "function": "nullb_apply_submit_queues"
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                "function_hash": "279330990577565015442120677977230967058"
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            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@aaadb755f2d684f715a6eb85cb7243aa0c67dfa9"
        },
        {
            "id": "CVE-2024-36478-a0879f2f",
            "signature_type": "Function",
            "target": {
                "file": "drivers/block/null_blk/main.c",
                "function": "nullb_device_power_store"
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            "deprecated": false,
            "digest": {
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                "function_hash": "204675466725009202780805435634832186860"
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            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@aaadb755f2d684f715a6eb85cb7243aa0c67dfa9"
        },
        {
            "id": "CVE-2024-36478-ac7b1c07",
            "signature_type": "Function",
            "target": {
                "file": "drivers/block/null_blk/main.c",
                "function": "null_create_dev"
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                "function_hash": "178090760703016267025401913910070920822"
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        },
        {
            "id": "CVE-2024-36478-afe69f83",
            "signature_type": "Function",
            "target": {
                "file": "drivers/block/null_blk/main.c",
                "function": "null_create_dev"
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                "function_hash": "178090760703016267025401913910070920822"
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            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@aaadb755f2d684f715a6eb85cb7243aa0c67dfa9"
        },
        {
            "id": "CVE-2024-36478-bef86c68",
            "signature_type": "Function",
            "target": {
                "file": "drivers/block/null_blk/main.c",
                "function": "null_add_dev"
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            "digest": {
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                "function_hash": "48322059944869761415791431406135421362"
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            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a2db328b0839312c169eb42746ec46fc1ab53ed2"
        },
        {
            "id": "CVE-2024-36478-c67b5b1a",
            "signature_type": "Function",
            "target": {
                "file": "drivers/block/null_blk/main.c",
                "function": "nullb_apply_submit_queues"
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            "deprecated": false,
            "digest": {
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                "function_hash": "279330990577565015442120677977230967058"
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            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@1d4c8baef435c98e8d5aa7027dc5a9f70834ba16"
        },
        {
            "id": "CVE-2024-36478-fa32df4e",
            "signature_type": "Function",
            "target": {
                "file": "drivers/block/null_blk/main.c",
                "function": "nullb_apply_submit_queues"
            },
            "deprecated": false,
            "digest": {
                "length": 125.0,
                "function_hash": "279330990577565015442120677977230967058"
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            "signature_version": "v1",
            "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a2db328b0839312c169eb42746ec46fc1ab53ed2"
        }
    ]
}

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.5.0
Fixed
6.1.119
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.55
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.9.4