CVE-2026-22998
- Source
- https://cve.org/CVERecord?id=CVE-2026-22998
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-22998.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-22998
- Downstream
BELL (1)
ECHO (1)
openSUSE (1)
ROOT (5)
SUSE (11)
UBUNTU (1)
- Related
- Published
- 2026-01-25T14:36:12Z
- Modified
- 2026-10-20T10:30:40Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- nvme-tcp: fix NULL pointer dereferences in nvmet_tcp_build_pdu_iovec
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
nvme-tcp: fix NULL pointer dereferences in nvmet_tcp_build_pdu_iovec
Commit efa56305908b ("nvmet-tcp: Fix a kernel panic when host sends an invalid H2C PDU length") added ttag bounds checking and data_offset validation in nvmet_tcp_handle_h2c_data_pdu(), but it did not validate whether the command's data structures (cmd->req.sg and cmd->iov) have been properly initialized before processing H2C_DATA PDUs.
The nvmet_tcp_build_pdu_iovec() function dereferences these pointers without NULL checks. This can be triggered by sending H2C_DATA PDU immediately after the ICREQ/ICRESP handshake, before sending a CONNECT command or NVMe write command.
Attack vectors that trigger NULL pointer dereferences:
- H2C_DATA PDU sent before CONNECT → both pointers NULL
- H2C_DATA PDU for READ command → cmd->req.sg allocated, cmd->iov NULL
- H2C_DATA PDU for uninitialized command slot → both pointers NULL
The fix validates both cmd->req.sg and cmd->iov before calling nvmet_tcp_build_pdu_iovec(). Both checks are required because:
- Uninitialized commands: both NULL
- READ commands: cmd->req.sg allocated, cmd->iov NULL
- WRITE commands: both allocated
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22998.json" }- References
-
- https://git.kernel.org/stable/c/32b63acd78f577b332d976aa06b56e70d054cbba
- https://git.kernel.org/stable/c/374b095e265fa27465f34780e0eb162ff1bef913
- https://git.kernel.org/stable/c/3def5243150716be86599c2a1767c29c68838b6d
- https://git.kernel.org/stable/c/76abc83a9d25593c2b7613c549413079c14a4686
- https://git.kernel.org/stable/c/7d75570002929d20e40110d6b03e46202c9d1bc7
- https://git.kernel.org/stable/c/baabe43a0edefac8cd7b981ff87f967f6034dafe
- https://git.kernel.org/stable/c/fdecd3b6aac10d5a18d0dc500fe57f8648b66cd4
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22998.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-22998
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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
-
Introducedf775f2621c2ac5cc3a0b3a64665dad4fb146e510Fixedbaabe43a0edefac8cd7b981ff87f967f6034dafe
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced4cb3cf7177ae3666be7fb27d4ad4d72a295fb02dFixed76abc83a9d25593c2b7613c549413079c14a4686
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced2871aa407007f6f531fae181ad252486e022df42Fixed7d75570002929d20e40110d6b03e46202c9d1bc7
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced24e05760186dc070d3db190ca61efdbce23afc88Fixedfdecd3b6aac10d5a18d0dc500fe57f8648b66cd4
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedefa56305908ba20de2104f1b8508c6a7401833beFixed3def5243150716be86599c2a1767c29c68838b6dFixed374b095e265fa27465f34780e0eb162ff1bef913Fixed32b63acd78f577b332d976aa06b56e70d054cbba
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5.10.209Fixed5.10.249
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5.15.148Fixed5.15.199
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.1.75Fixed6.1.162
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.6.14Fixed6.6.122
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5.4.268Fixed5.5
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.7.2Fixed6.8
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedee5e7632e981673f42a50ade25e71e612e543d9d
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced70154e8d015c9b4fb56c1a2ef1fc8b83d45c7f68
Affected versions
v5.*
v5.10.209
v5.10.210
v5.10.211
v5.10.212
v5.10.213
v5.10.214
v5.10.215
v5.10.216
v5.10.217
v5.10.218
v5.10.219
v5.10.220
v5.10.221
v5.10.222
v5.10.223
v5.10.224
v5.10.225
v5.10.226
v5.10.227
v5.10.228
v5.10.229
v5.10.230
v5.10.231
v5.10.232
v5.10.233
v5.10.234
v5.10.235
v5.10.236
v5.10.237
v5.10.238
v5.10.239
v5.10.240
v5.10.241
v5.10.242
v5.10.243
v5.10.244
v5.10.245
v5.10.246
v5.10.247
v5.10.248
v5.15.148
v5.15.149
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
v5.15.160
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
v5.15.170
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
v5.15.180
v5.15.181
v5.15.182
v5.15.183
v5.15.184
v5.15.185
v5.15.186
v5.15.187
v5.15.188
v5.15.189
v5.15.190
v5.15.191
v5.15.192
v5.15.193
v5.15.194
v5.15.195
v5.15.196
v5.15.197
v5.15.198
v5.4.268
v5.4.269
v5.4.270
v5.4.271
v5.4.272
v5.4.273
v5.4.274
v5.4.275
v5.4.276
v5.4.277
v5.4.278
v5.4.279
v5.4.280
v5.4.281
v5.4.282
v5.4.283
v5.4.284
v5.4.285
v5.4.286
v5.4.287
v5.4.288
v5.4.289
v5.4.290
v5.4.291
v5.4.292
v5.4.293
v5.4.294
v5.4.295
v5.4.296
v5.4.297
v5.4.298
v5.4.299
v5.4.300
v5.4.301
v5.4.302
v6.*
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
v6.1.110
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
v6.1.120
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
v6.1.130
v6.1.131
v6.1.132
v6.1.133
v6.1.134
v6.1.135
v6.1.136
v6.1.137
v6.1.138
v6.1.139
v6.1.140
v6.1.141
v6.1.142
v6.1.143
v6.1.144
v6.1.145
v6.1.146
v6.1.147
v6.1.148
v6.1.149
v6.1.150
v6.1.151
v6.1.152
v6.1.153
v6.1.154
v6.1.155
v6.1.156
v6.1.157
v6.1.158
v6.1.159
v6.1.160
v6.1.161
v6.1.75
v6.1.76
v6.1.77
v6.1.78
v6.1.79
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
v6.1.90
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
v6.6.100
v6.6.101
v6.6.102
v6.6.103
v6.6.104
v6.6.105
v6.6.106
v6.6.107
v6.6.108
v6.6.109
v6.6.110
v6.6.111
v6.6.112
v6.6.113
v6.6.114
v6.6.115
v6.6.116
v6.6.117
v6.6.118
v6.6.119
v6.6.120
v6.6.121
v6.6.14
v6.6.15
v6.6.16
v6.6.17
v6.6.18
v6.6.19
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
v6.6.30
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
v6.6.40
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
v6.6.50
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
v6.6.60
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
v6.6.70
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
v6.6.80
v6.6.81
v6.6.82
v6.6.83
v6.6.84
v6.6.85
v6.6.86
v6.6.87
v6.6.88
v6.6.89
v6.6.90
v6.6.91
v6.6.92
v6.6.93
v6.6.94
v6.6.95
v6.6.96
v6.6.97
v6.6.98
v6.6.99
v6.7.10
v6.7.11
v6.7.12
v6.7.2
v6.7.3
v6.7.4
v6.7.5
v6.7.6
v6.7.7
v6.7.8
v6.7.9
Linux / Kernel
Package
- Name
- Kernel
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed5.10.249
- Type
- ECOSYSTEM
- Events
-
Introduced5.11.0Fixed5.15.199
- Type
- ECOSYSTEM
- Events
-
Introduced5.16.0Fixed6.1.162
- Type
- ECOSYSTEM
- Events
-
Introduced6.2.0Fixed6.6.122
- Type
- ECOSYSTEM
- Events
-
Introduced6.7.0Fixed6.12.67
- Type
- ECOSYSTEM
- Events
-
Introduced6.8.0Fixed6.18.7