CVE-2023-52837

See a problem?
Please try reporting it to the source first.
Source
https://nvd.nist.gov/vuln/detail/CVE-2023-52837
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52837.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-52837
Downstream
Related
Published
2024-05-21T15:31:37Z
Modified
2025-10-21T15:10:37.186077Z
Summary
nbd: fix uaf in nbd_open
Details

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

nbd: fix uaf in nbd_open

Commit 4af5f2e03013 ("nbd: use blkmqallocdisk and blkcleanupdisk") cleans up disk by blkcleanupdisk() and it won't set disk->privatedata as NULL as before. UAF may be triggered in nbdopen() if someone tries to open nbd device right after nbdput() since nbd has been free in nbddevremove().

Fix this by implementing ->free_disk and free private data in it.

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
4af5f2e0301311f88c420fcfc5f3c8611ade20ac
Fixed
4e9b3ec84dc97909876641dad14e0a2300d6c2a3
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
4af5f2e0301311f88c420fcfc5f3c8611ade20ac
Fixed
879947f4180bc6e83af64eb0515e0cf57fce15db
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
4af5f2e0301311f88c420fcfc5f3c8611ade20ac
Fixed
56bd7901b5e9dbc9112036ea615ebcba1565fafe
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
4af5f2e0301311f88c420fcfc5f3c8611ade20ac
Fixed
327462725b0f759f093788dfbcb2f1fd132f956b

Affected versions

v5.*

v5.13
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

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
v6.1.11
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
v6.1.7
v6.1.8
v6.1.9
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
v6.5.1
v6.5.10
v6.5.11
v6.5.2
v6.5.3
v6.5.4
v6.5.5
v6.5.6
v6.5.7
v6.5.8
v6.5.9
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

Database specific

vanir_signatures

[
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@879947f4180bc6e83af64eb0515e0cf57fce15db",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "file": "drivers/block/nbd.c"
        },
        "id": "CVE-2023-52837-21cd7d18",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "241278684828770172018825890974295028009",
                "52126995608373830180836463022700340410",
                "250262879988443759638593774267995562608",
                "133644468530881695212607845341052066083",
                "235569097776759396714547149018345568313",
                "290699982851861675771061313328416779200",
                "262693718463212930325062903996932135769",
                "191245696005573373464279962909965686162",
                "16644805479774957135987022256069910662",
                "163374787843869954639178974484168520040",
                "115799142871319936369029841173725717311",
                "92413670129057170830927274028129026169",
                "308009939508073735681661602299716100783",
                "192798757089417238517841367117962486917",
                "297627863424390966237394163551712674176"
            ]
        },
        "signature_type": "Line"
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@327462725b0f759f093788dfbcb2f1fd132f956b",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "file": "drivers/block/nbd.c"
        },
        "id": "CVE-2023-52837-311e0b38",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "241278684828770172018825890974295028009",
                "52126995608373830180836463022700340410",
                "250262879988443759638593774267995562608",
                "133644468530881695212607845341052066083",
                "235569097776759396714547149018345568313",
                "290699982851861675771061313328416779200",
                "262693718463212930325062903996932135769",
                "191245696005573373464279962909965686162",
                "16644805479774957135987022256069910662",
                "163374787843869954639178974484168520040",
                "115799142871319936369029841173725717311",
                "92413670129057170830927274028129026169",
                "308009939508073735681661602299716100783",
                "192798757089417238517841367117962486917",
                "297627863424390966237394163551712674176"
            ]
        },
        "signature_type": "Line"
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@56bd7901b5e9dbc9112036ea615ebcba1565fafe",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "function": "nbd_dev_remove",
            "file": "drivers/block/nbd.c"
        },
        "id": "CVE-2023-52837-4cc714ad",
        "digest": {
            "length": 314.0,
            "function_hash": "144066462621623238064981384252424812082"
        },
        "signature_type": "Function"
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@56bd7901b5e9dbc9112036ea615ebcba1565fafe",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "file": "drivers/block/nbd.c"
        },
        "id": "CVE-2023-52837-5506784e",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "241278684828770172018825890974295028009",
                "52126995608373830180836463022700340410",
                "250262879988443759638593774267995562608",
                "133644468530881695212607845341052066083",
                "235569097776759396714547149018345568313",
                "290699982851861675771061313328416779200",
                "262693718463212930325062903996932135769",
                "191245696005573373464279962909965686162",
                "16644805479774957135987022256069910662",
                "163374787843869954639178974484168520040",
                "115799142871319936369029841173725717311",
                "92413670129057170830927274028129026169",
                "308009939508073735681661602299716100783",
                "192798757089417238517841367117962486917",
                "297627863424390966237394163551712674176"
            ]
        },
        "signature_type": "Line"
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@879947f4180bc6e83af64eb0515e0cf57fce15db",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "function": "nbd_dev_remove",
            "file": "drivers/block/nbd.c"
        },
        "id": "CVE-2023-52837-77fe3eee",
        "digest": {
            "length": 314.0,
            "function_hash": "144066462621623238064981384252424812082"
        },
        "signature_type": "Function"
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@327462725b0f759f093788dfbcb2f1fd132f956b",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "function": "nbd_dev_remove",
            "file": "drivers/block/nbd.c"
        },
        "id": "CVE-2023-52837-9d534ff8",
        "digest": {
            "length": 314.0,
            "function_hash": "144066462621623238064981384252424812082"
        },
        "signature_type": "Function"
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4e9b3ec84dc97909876641dad14e0a2300d6c2a3",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "function": "nbd_dev_remove",
            "file": "drivers/block/nbd.c"
        },
        "id": "CVE-2023-52837-c2d9c151",
        "digest": {
            "length": 314.0,
            "function_hash": "144066462621623238064981384252424812082"
        },
        "signature_type": "Function"
    },
    {
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@4e9b3ec84dc97909876641dad14e0a2300d6c2a3",
        "signature_version": "v1",
        "deprecated": false,
        "target": {
            "file": "drivers/block/nbd.c"
        },
        "id": "CVE-2023-52837-f5714d02",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "241278684828770172018825890974295028009",
                "52126995608373830180836463022700340410",
                "250262879988443759638593774267995562608",
                "133644468530881695212607845341052066083",
                "235569097776759396714547149018345568313",
                "290699982851861675771061313328416779200",
                "262693718463212930325062903996932135769",
                "191245696005573373464279962909965686162",
                "16644805479774957135987022256069910662",
                "163374787843869954639178974484168520040",
                "115799142871319936369029841173725717311",
                "92413670129057170830927274028129026169",
                "308009939508073735681661602299716100783",
                "192798757089417238517841367117962486917",
                "297627863424390966237394163551712674176"
            ]
        },
        "signature_type": "Line"
    }
]

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.14.0
Fixed
6.1.63
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.5.12
Type
ECOSYSTEM
Events
Introduced
6.6.0
Fixed
6.6.2