CVE-2026-90176
- Source
- https://cve.org/CVERecord?id=CVE-2026-90176
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90176.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-90176
- Downstream
- Published
- 2026-09-17T16:07:02Z
- Modified
- 2026-09-18T03:48:36Z
- Summary
- ksmbd: Do not skip lock checks for single-byte ranges
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: Do not skip lock checks for single-byte ranges
check_lock_range() uses inclusive ranges. Its callers pass the end offset as start + length - 1, so start == end represents a valid single-byte range rather than an empty range.
The start == end shortcut therefore skips mandatory byte-range lock checks for one-byte reads, writes, copychunk operations and one-byte truncate ranges. A conflicting lock covering that byte is not checked and the operation is allowed to proceed.
Remove the shortcut. The truncate size == inode->i_size case is already handled by only calling check_lock_range() when the new size differs from the current file size.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90176.json" }- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/07a9e289ff7edcc004f58952405f8a65c4e37512
- https://git.kernel.org/stable/c/84c2d8e807ac489f5c91769293fb15dfdae8bae8
- https://git.kernel.org/stable/c/993e0158331d37c04da18efe551b5e1e35fb3078
- https://git.kernel.org/stable/c/a89cc145832e81c32199d4ca2e1ea8bd51ed601d
- https://git.kernel.org/stable/c/d40c24634fe077a0dc91fd11fccf44ce12b454d5
- https://git.kernel.org/stable/c/f751d6e39d4c937c45f8fedc66699aa7d2d52288
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90176.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-90176
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
-
Introduced52fcbb92e0d3acfd1448b2a43b6595d540da5295Fixeda89cc145832e81c32199d4ca2e1ea8bd51ed601d
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedda29cd197246c85c0473259f1cad897d9d28faeaFixed993e0158331d37c04da18efe551b5e1e35fb3078
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceda6f4cfa3783804336491e0edcb250c25f9b59d33Fixedf751d6e39d4c937c45f8fedc66699aa7d2d52288
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced571204e4758a528fbd67330bd4b0dfbdafb33dd8Fixed84c2d8e807ac489f5c91769293fb15dfdae8bae8
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5d510ac31626ed157d2182149559430350cf2104Fixed07a9e289ff7edcc004f58952405f8a65c4e37512Fixedd40c24634fe077a0dc91fd11fccf44ce12b454d5
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.1.160Fixed6.1.188
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.6.120Fixed6.6.157
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.12.64Fixed6.12.110
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.18.3Fixed6.18.52
Affected versions
v6.*
v6.1.160
v6.1.161
v6.1.162
v6.1.163
v6.1.164
v6.1.165
v6.1.166
v6.1.167
v6.1.168
v6.1.169
v6.1.170
v6.1.171
v6.1.172
v6.1.173
v6.1.174
v6.1.175
v6.1.176
v6.1.177
v6.1.178
v6.1.179
v6.1.180
v6.1.181
v6.1.182
v6.1.183
v6.1.184
v6.1.185
v6.1.186
v6.1.187
v6.12.100
v6.12.101
v6.12.102
v6.12.103
v6.12.104
v6.12.105
v6.12.106
v6.12.107
v6.12.108
v6.12.109
v6.12.64
v6.12.65
v6.12.66
v6.12.67
v6.12.68
v6.12.69
v6.12.70
v6.12.71
v6.12.72
v6.12.73
v6.12.74
v6.12.75
v6.12.76
v6.12.77
v6.12.78
v6.12.79
v6.12.80
v6.12.81
v6.12.82
v6.12.83
v6.12.84
v6.12.85
v6.12.86
v6.12.87
v6.12.88
v6.12.89
v6.12.90
v6.12.91
v6.12.92
v6.12.93
v6.12.94
v6.12.95
v6.12.96
v6.12.97
v6.12.98
v6.12.99
v6.18.10
v6.18.11
v6.18.12
v6.18.13
v6.18.14
v6.18.15
v6.18.16
v6.18.17
v6.18.18
v6.18.19
v6.18.20
v6.18.21
v6.18.22
v6.18.23
v6.18.24
v6.18.25
v6.18.26
v6.18.27
v6.18.28
v6.18.29
v6.18.3
v6.18.30
v6.18.31
v6.18.32
v6.18.33
v6.18.34
v6.18.35
v6.18.36
v6.18.37
v6.18.38
v6.18.39
v6.18.4
v6.18.40
v6.18.41
v6.18.42
v6.18.43
v6.18.44
v6.18.45
v6.18.46
v6.18.47
v6.18.48
v6.18.49
v6.18.5
v6.18.50
v6.18.51
v6.18.6
v6.18.7
v6.18.8
v6.18.9
v6.6.120
v6.6.121
v6.6.122
v6.6.123
v6.6.124
v6.6.125
v6.6.126
v6.6.127
v6.6.128
v6.6.129
v6.6.130
v6.6.131
v6.6.132
v6.6.133
v6.6.134
v6.6.135
v6.6.136
v6.6.137
v6.6.138
v6.6.139
v6.6.140
v6.6.141
v6.6.142
v6.6.143
v6.6.144
v6.6.145
v6.6.146
v6.6.147
v6.6.148
v6.6.149
v6.6.150
v6.6.151
v6.6.152
v6.6.153
v6.6.154
v6.6.155
v6.6.156
Linux / Kernel
Package
- Name
- Kernel
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed6.1.188
- Type
- ECOSYSTEM
- Events
-
Introduced6.2.0Fixed6.6.157
- Type
- ECOSYSTEM
- Events
-
Introduced6.7.0Fixed6.12.110
- Type
- ECOSYSTEM
- Events
-
Introduced6.13.0Fixed6.18.52
- Type
- ECOSYSTEM
- Events
-
Introduced6.19.0Fixed7.2.6