CVE-2025-21994
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2025-21994
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21994.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-21994
- Downstream
- Related
- Published
- 2025-04-02T14:00:37Z
- Modified
- 2025-10-17T23:24:01.408617Z
- Summary
- ksmbd: fix incorrect validation for num_aces field of smb_acl
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix incorrect validation for numaces field of smbacl
parsedcal() validate numaces to allocate posixacestate_array.
if (numaces > ULONGMAX / sizeof(struct smb_ace *))
It is an incorrect validation that we can create an array of size ULONGMAX. smbacl has ->size field to calculate actual number of aces in request buffer size. Use this to check invalid num_aces.
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/1b8b67f3c5e5169535e26efedd3e422172e2db64
- https://git.kernel.org/stable/c/9c4e202abff45f8eac17989e549fc7a75095f675
- https://git.kernel.org/stable/c/a4cb17797a5d241f1e509cb5b46ed95a80c2f5fd
- https://git.kernel.org/stable/c/c3a3484d9d31b27a3db0fab91fcf191132d65236
- https://git.kernel.org/stable/c/d0f87370622a853b57e851f7d5a5452b72300f19
- https://git.kernel.org/stable/c/f6a6721802ac2f12f4c1bbe839a4c229b61866f2
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
-
Introduced0626e6641f6b467447c81dd7678a69c66f7746cfFixedc3a3484d9d31b27a3db0fab91fcf191132d65236
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0626e6641f6b467447c81dd7678a69c66f7746cfFixed9c4e202abff45f8eac17989e549fc7a75095f675
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0626e6641f6b467447c81dd7678a69c66f7746cfFixedd0f87370622a853b57e851f7d5a5452b72300f19
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0626e6641f6b467447c81dd7678a69c66f7746cfFixeda4cb17797a5d241f1e509cb5b46ed95a80c2f5fd
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0626e6641f6b467447c81dd7678a69c66f7746cfFixedf6a6721802ac2f12f4c1bbe839a4c229b61866f2
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0626e6641f6b467447c81dd7678a69c66f7746cfFixed1b8b67f3c5e5169535e26efedd3e422172e2db64
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
v5.15.1
v5.15.10
v5.15.100
v5.15.101
v5.15.102
v5.15.103
v5.15.104
v5.15.105
v5.15.106
v5.15.107
v5.15.108
v5.15.109
v5.15.11
v5.15.110
v5.15.111
v5.15.112
v5.15.113
v5.15.114
v5.15.115
v5.15.116
v5.15.117
v5.15.118
v5.15.119
v5.15.12
v5.15.120
v5.15.121
v5.15.122
v5.15.123
v5.15.124
v5.15.125
v5.15.126
v5.15.127
v5.15.128
v5.15.129
v5.15.13
v5.15.130
v5.15.131
v5.15.132
v5.15.133
v5.15.134
v5.15.135
v5.15.136
v5.15.137
v5.15.138
v5.15.139
v5.15.14
v5.15.140
v5.15.141
v5.15.142
v5.15.143
v5.15.144
v5.15.145
v5.15.146
v5.15.147
v5.15.148
v5.15.149
v5.15.15
v5.15.150
v5.15.151
v5.15.152
v5.15.153
v5.15.154
v5.15.155
v5.15.156
v5.15.157
v5.15.158
v5.15.159
v5.15.16
v5.15.160
v5.15.161
v5.15.162
v5.15.163
v5.15.164
v5.15.165
v5.15.166
v5.15.167
v5.15.168
v5.15.169
v5.15.17
v5.15.170
v5.15.171
v5.15.172
v5.15.173
v5.15.174
v5.15.175
v5.15.176
v5.15.177
v5.15.178
v5.15.179
v5.15.18
v5.15.19
v5.15.2
v5.15.20
v5.15.21
v5.15.22
v5.15.23
v5.15.24
v5.15.25
v5.15.26
v5.15.27
v5.15.28
v5.15.29
v5.15.3
v5.15.30
v5.15.31
v5.15.32
v5.15.33
v5.15.34
v5.15.35
v5.15.36
v5.15.37
v5.15.38
v5.15.39
v5.15.4
v5.15.40
v5.15.41
v5.15.42
v5.15.43
v5.15.44
v5.15.45
v5.15.46
v5.15.47
v5.15.48
v5.15.49
v5.15.5
v5.15.50
v5.15.51
v5.15.52
v5.15.53
v5.15.54
v5.15.55
v5.15.56
v5.15.57
v5.15.58
v5.15.59
v5.15.6
v5.15.60
v5.15.61
v5.15.62
v5.15.63
v5.15.64
v5.15.65
v5.15.66
v5.15.67
v5.15.68
v5.15.69
v5.15.7
v5.15.70
v5.15.71
v5.15.72
v5.15.73
v5.15.74
v5.15.75
v5.15.76
v5.15.77
v5.15.78
v5.15.79
v5.15.8
v5.15.80
v5.15.81
v5.15.82
v5.15.83
v5.15.84
v5.15.85
v5.15.86
v5.15.87
v5.15.88
v5.15.89
v5.15.9
v5.15.90
v5.15.91
v5.15.92
v5.15.93
v5.15.94
v5.15.95
v5.15.96
v5.15.97
v5.15.98
v5.15.99
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
v6.1.131
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
v6.12.19
v6.12.2
v6.12.20
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
v6.13.7
v6.13.8
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
v6.6.83
v6.6.84
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-2025-21994-4d5e1457",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Function",
"digest": {
"function_hash": "188146019277595244986996904874360955633",
"length": 5294.0
},
"target": {
"file": "fs/smb/server/smbacl.c",
"function": "parse_dacl"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@f6a6721802ac2f12f4c1bbe839a4c229b61866f2"
},
{
"id": "CVE-2025-21994-76045148",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Function",
"digest": {
"function_hash": "100582898895957725585713157959388813138",
"length": 5273.0
},
"target": {
"file": "fs/ksmbd/smbacl.c",
"function": "parse_dacl"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@c3a3484d9d31b27a3db0fab91fcf191132d65236"
},
{
"id": "CVE-2025-21994-aa7c010d",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Function",
"digest": {
"function_hash": "100582898895957725585713157959388813138",
"length": 5273.0
},
"target": {
"file": "fs/smb/server/smbacl.c",
"function": "parse_dacl"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@d0f87370622a853b57e851f7d5a5452b72300f19"
},
{
"id": "CVE-2025-21994-acfa2a11",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Line",
"digest": {
"line_hashes": [
"247163386785035142565829278668553029186",
"234124404055154443842083929274698239405",
"269407320217351538656149069385500044946",
"130150819057146827134416650596549654975",
"149309407638692324927224546760592101787",
"108068587267176012199339273090500573877",
"282339880447226470592442431076360833273",
"202043020967590576988083579659022406174"
],
"threshold": 0.9
},
"target": {
"file": "fs/ksmbd/smbacl.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@c3a3484d9d31b27a3db0fab91fcf191132d65236"
},
{
"id": "CVE-2025-21994-aff2d7a4",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Line",
"digest": {
"line_hashes": [
"247163386785035142565829278668553029186",
"234124404055154443842083929274698239405",
"269407320217351538656149069385500044946",
"130150819057146827134416650596549654975",
"149309407638692324927224546760592101787",
"108068587267176012199339273090500573877",
"282339880447226470592442431076360833273",
"202043020967590576988083579659022406174"
],
"threshold": 0.9
},
"target": {
"file": "fs/smb/server/smbacl.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a4cb17797a5d241f1e509cb5b46ed95a80c2f5fd"
},
{
"id": "CVE-2025-21994-c1362875",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Line",
"digest": {
"line_hashes": [
"337668324555375143438777276104419377423",
"234124404055154443842083929274698239405",
"269407320217351538656149069385500044946",
"130150819057146827134416650596549654975",
"149309407638692324927224546760592101787",
"108068587267176012199339273090500573877",
"282339880447226470592442431076360833273",
"202043020967590576988083579659022406174"
],
"threshold": 0.9
},
"target": {
"file": "fs/smb/server/smbacl.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@1b8b67f3c5e5169535e26efedd3e422172e2db64"
},
{
"id": "CVE-2025-21994-c6f2722d",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Function",
"digest": {
"function_hash": "188146019277595244986996904874360955633",
"length": 5294.0
},
"target": {
"file": "fs/smb/server/smbacl.c",
"function": "parse_dacl"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@1b8b67f3c5e5169535e26efedd3e422172e2db64"
},
{
"id": "CVE-2025-21994-d9681ea0",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Function",
"digest": {
"function_hash": "100582898895957725585713157959388813138",
"length": 5273.0
},
"target": {
"file": "fs/smb/server/smbacl.c",
"function": "parse_dacl"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@a4cb17797a5d241f1e509cb5b46ed95a80c2f5fd"
},
{
"id": "CVE-2025-21994-f932399c",
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