CVE-2025-21945
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-21945
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21945.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2025-21945
- Downstream
- Published
- 2025-04-01T15:41:08.471Z
- Modified
- 2025-11-20T08:47:37.196137Z
- 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
- ksmbd: fix use-after-free in smb2_lock
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix use-after-free in smb2_lock
If smblock->zerolen has value, ->llist of smb_lock is not delete and flock is old one. It will cause use-after-free on error handling routine.
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/410ce35a2ed6d0e114132bba29af49b69880c8c7
- https://git.kernel.org/stable/c/636e021646cf9b52ddfea7c809b018e91f2188cb
- https://git.kernel.org/stable/c/84d2d1641b71dec326e8736a749b7ee76a9599fc
- https://git.kernel.org/stable/c/8573571060ca466cbef2c6f03306b2cc7b883506
- https://git.kernel.org/stable/c/a0609097fd10d618aed4864038393dd75131289e
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
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
-
Introduced0626e6641f6b467447c81dd7678a69c66f7746cfFixed410ce35a2ed6d0e114132bba29af49b69880c8c7
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0626e6641f6b467447c81dd7678a69c66f7746cfFixed8573571060ca466cbef2c6f03306b2cc7b883506
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0626e6641f6b467447c81dd7678a69c66f7746cfFixeda0609097fd10d618aed4864038393dd75131289e
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0626e6641f6b467447c81dd7678a69c66f7746cfFixed636e021646cf9b52ddfea7c809b018e91f2188cb
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0626e6641f6b467447c81dd7678a69c66f7746cfFixed84d2d1641b71dec326e8736a749b7ee76a9599fc
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
v6.1.1
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
v6.1.14
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
v6.11
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
v6.12.2
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
v6.13.1
v6.13.2
v6.13.3
v6.13.4
v6.13.5
v6.13.6
v6.14-rc1
v6.14-rc2
v6.14-rc3
v6.14-rc4
v6.14-rc5
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
v6.6.9
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
[
{
"id": "CVE-2025-21945-1be30f1b",
"deprecated": false,
"signature_version": "v1",
"target": {
"function": "smb2_lock",
"file": "fs/smb/server/smb2pdu.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@636e021646cf9b52ddfea7c809b018e91f2188cb",
"digest": {
"length": 8079.0,
"function_hash": "150171461879216570882073493827254001311"
},
"signature_type": "Function"
},
{
"id": "CVE-2025-21945-41d7f0a5",
"deprecated": false,
"signature_version": "v1",
"target": {
"file": "fs/smb/server/smb2pdu.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@8573571060ca466cbef2c6f03306b2cc7b883506",
"digest": {
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],
"threshold": 0.9
},
"signature_type": "Line"
},
{
"id": "CVE-2025-21945-47e95d74",
"deprecated": false,
"signature_version": "v1",
"target": {
"file": "fs/smb/server/smb2pdu.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a0609097fd10d618aed4864038393dd75131289e",
"digest": {
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],
"threshold": 0.9
},
"signature_type": "Line"
},
{
"id": "CVE-2025-21945-505062b0",
"deprecated": false,
"signature_version": "v1",
"target": {
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},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@636e021646cf9b52ddfea7c809b018e91f2188cb",
"digest": {
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],
"threshold": 0.9
},
"signature_type": "Line"
},
{
"id": "CVE-2025-21945-89c07677",
"deprecated": false,
"signature_version": "v1",
"target": {
"function": "smb2_lock",
"file": "fs/smb/server/smb2pdu.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@8573571060ca466cbef2c6f03306b2cc7b883506",
"digest": {
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"function_hash": "114912590379707622607140615975344016015"
},
"signature_type": "Function"
},
{
"id": "CVE-2025-21945-d7e49b3e",
"deprecated": false,
"signature_version": "v1",
"target": {
"function": "smb2_lock",
"file": "fs/smb/server/smb2pdu.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a0609097fd10d618aed4864038393dd75131289e",
"digest": {
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"function_hash": "299248609935160873487969423345843332046"
},
"signature_type": "Function"
}
]