CVE-2025-37776

Source
https://nvd.nist.gov/vuln/detail/CVE-2025-37776
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-37776.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-37776
Downstream
Published
2025-05-01T13:07:14Z
Modified
2025-10-18T00:28:35.970863Z
Summary
ksmbd: fix use-after-free in smb_break_all_levII_oplock()
Details

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

ksmbd: fix use-after-free in smbbreakalllevIIoplock()

There is a room in smbbreakalllevIIoplock that can cause racy issues when unlocking in the middle of the loop. This patch use read lock to protect whole loop.

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
0626e6641f6b467447c81dd7678a69c66f7746cf
Fixed
296cb5457cc6f4a754c4ae29855f8a253d52bcc6
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0626e6641f6b467447c81dd7678a69c66f7746cf
Fixed
d54ab1520d43e95f9b2e22d7a05fc9614192e5a5
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0626e6641f6b467447c81dd7678a69c66f7746cf
Fixed
d73686367ad68534257cd88a36ca3c52cb8b81d8
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0626e6641f6b467447c81dd7678a69c66f7746cf
Fixed
18b4fac5ef17f77fed9417d22210ceafd6525fc7

Affected versions

v5.*

v5.13
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

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
v6.10
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
v6.12
v6.12-rc1
v6.12-rc2
v6.12-rc3
v6.12-rc4
v6.12-rc5
v6.12-rc6
v6.12-rc7
v6.12.1
v6.12.10
v6.12.11
v6.12.12
v6.12.13
v6.12.14
v6.12.15
v6.12.16
v6.12.17
v6.12.18
v6.12.19
v6.12.2
v6.12.20
v6.12.21
v6.12.22
v6.12.23
v6.12.24
v6.12.3
v6.12.4
v6.12.5
v6.12.6
v6.12.7
v6.12.8
v6.12.9
v6.13
v6.13-rc1
v6.13-rc2
v6.13-rc3
v6.13-rc4
v6.13-rc5
v6.13-rc6
v6.13-rc7
v6.14
v6.14-rc1
v6.14-rc2
v6.14-rc3
v6.14-rc4
v6.14-rc5
v6.14-rc6
v6.14-rc7
v6.14.1
v6.14.2
v6.14.3
v6.15-rc1
v6.15-rc2
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
v6.6.9
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

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        "id": "CVE-2025-37776-04ba7516",
        "deprecated": false,
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        "digest": {
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        "digest": {
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        "id": "CVE-2025-37776-0e2d1915",
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    },
    {
        "id": "CVE-2025-37776-2fc54824",
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        "signature_version": "v1",
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        "digest": {
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            "length": 1386.0
        },
        "target": {
            "file": "fs/smb/server/oplock.c",
            "function": "smb_break_all_levII_oplock"
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        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@296cb5457cc6f4a754c4ae29855f8a253d52bcc6"
    },
    {
        "id": "CVE-2025-37776-3d8988f7",
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        "digest": {
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        "id": "CVE-2025-37776-3f73add2",
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        "signature_version": "v1",
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        "digest": {
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            "length": 1386.0
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    },
    {
        "id": "CVE-2025-37776-40c796d3",
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        "signature_version": "v1",
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        "digest": {
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        },
        "target": {
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            "function": "opinfo_free_rcu"
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    {
        "id": "CVE-2025-37776-4120e34b",
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        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
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            "function": "opinfo_get_list"
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    },
    {
        "id": "CVE-2025-37776-4601be91",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
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            "file": "fs/smb/server/oplock.h"
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    },
    {
        "id": "CVE-2025-37776-4cb26452",
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        "signature_version": "v1",
        "signature_type": "Line",
        "digest": {
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        },
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    },
    {
        "id": "CVE-2025-37776-61ffd8d1",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
            "function_hash": "115541310942672728264567918887145884189",
            "length": 130.0
        },
        "target": {
            "file": "fs/smb/server/oplock.c",
            "function": "opinfo_free_rcu"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@18b4fac5ef17f77fed9417d22210ceafd6525fc7"
    },
    {
        "id": "CVE-2025-37776-6b8ea65a",
        "deprecated": false,
        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
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            "length": 414.0
        },
        "target": {
            "file": "fs/smb/server/oplock.c",
            "function": "opinfo_get_list"
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        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@296cb5457cc6f4a754c4ae29855f8a253d52bcc6"
    },
    {
        "id": "CVE-2025-37776-6d479a42",
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        "signature_version": "v1",
        "signature_type": "Function",
        "digest": {
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            "length": 414.0
        },
        "target": {
            "file": "fs/smb/server/oplock.c",
            "function": "opinfo_get_list"
        },
        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@d54ab1520d43e95f9b2e22d7a05fc9614192e5a5"
    },
    {
        "id": "CVE-2025-37776-740a161d",
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        "source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@d73686367ad68534257cd88a36ca3c52cb8b81d8"
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        "digest": {
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    }
]

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.15.0
Fixed
6.6.88
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.25
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.14.4