CVE-2026-68301
- Source
- https://cve.org/CVERecord?id=CVE-2026-68301
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68301.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-68301
- Downstream
- Published
- 2026-08-10T12:02:35Z
- Modified
- 2026-08-21T03:30:38Z
- Summary
- net: hsr: fix memory leak on slave unregistration by removing synced VLANs
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
net: hsr: fix memory leak on slave unregistration by removing synced VLANs
When an HSR master device is brought UP, it auto-adds VLAN 0 via vlan_vid0_add(), which propagates VID 0 to its slave devices (slave A and B).
If a slave device is later unregistered while HSR is active (e.g., during netns cleanup or interface destruction), hsr_del_port() is called to detach the slave port from the HSR master. However, hsr_del_port() currently does not delete the VLAN IDs that were synced to the slave device by HSR.
As a result, the slave device retains a refcount on VID 0 (and any other synced VLANs). When the slave device is destroyed, its vlan_info / vlan_vid_info structure remains allocated, leading to a memory leak.
Fix this by calling vlan_vids_del_by_dev(port->dev, master->dev) in hsr_del_port() before unlinking slave A or slave B ports, matching the propagation logic in hsr_ndo_vlan_rx_add_vid() / hsr_ndo_vlan_rx_kill_vid() and the cleanup behavior in bonding and team drivers.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68301.json" }- References
-
- https://git.kernel.org/stable/c/21d48408479a17eb65568a765930adea37e4d804
- https://git.kernel.org/stable/c/79ff0547676acdeceda445c3fce4071b0a887b70
- https://git.kernel.org/stable/c/ae995b8002d3af134560a706c0e111a89e26317c
- https://git.kernel.org/stable/c/b5ded444621b6180df9f3d4e07045fc1fc1e8cd9
- https://git.kernel.org/stable/c/ccc822e9e4f09a6c2ca73ad5334570441947f94f
- https://git.kernel.org/stable/c/dcf15eaf5641812f1cfc5e96537380132a7da89d
- https://git.kernel.org/stable/c/f72c312af6c7897ab0f8a2b5a63f917a207a4143
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68301.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-68301
- 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
-
Introduced1100242709d5644856131a9dd25d32672ebe7357Fixedccc822e9e4f09a6c2ca73ad5334570441947f94f
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceda2accc07bdcfb0c7ab2cacdca6a1fe8267816efaFixed79ff0547676acdeceda445c3fce4071b0a887b70
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced72dbae1f2f2159395089405c6c54632f2613f1beFixedf72c312af6c7897ab0f8a2b5a63f917a207a4143
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedc707d2c5541d2bb94131968ad5dfeb06427a1dbaFixed21d48408479a17eb65568a765930adea37e4d804
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced1a8a63a5305e95519de6f941922dfcd8179f82e5Fixedb5ded444621b6180df9f3d4e07045fc1fc1e8cd9Fixedae995b8002d3af134560a706c0e111a89e26317cFixeddcf15eaf5641812f1cfc5e96537380132a7da89d
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced5.15.194Fixed5.15.216
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.1.153Fixed6.1.183
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.6.107Fixed6.6.148
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced6.12.48Fixed6.12.101
Affected versions
v5.*
v5.15.194
v5.15.195
v5.15.196
v5.15.197
v5.15.198
v5.15.199
v5.15.200
v5.15.201
v5.15.202
v5.15.203
v5.15.204
v5.15.205
v5.15.206
v5.15.207
v5.15.208
v5.15.209
v5.15.210
v5.15.211
v5.15.212
v5.15.213
v5.15.214
v5.15.215
v6.*
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
v6.1.162
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
v6.12.100
v6.12.48
v6.12.49
v6.12.50
v6.12.51
v6.12.52
v6.12.53
v6.12.54
v6.12.55
v6.12.56
v6.12.57
v6.12.58
v6.12.59
v6.12.60
v6.12.61
v6.12.62
v6.12.63
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
v6.6.107
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
v6.6.122
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
Linux / Kernel
Package
- Name
- Kernel
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed5.15.216
- Type
- ECOSYSTEM
- Events
-
Introduced5.16.0Fixed6.1.183
- Type
- ECOSYSTEM
- Events
-
Introduced6.2.0Fixed6.6.148
- Type
- ECOSYSTEM
- Events
-
Introduced6.7.0Fixed6.12.101
- Type
- ECOSYSTEM
- Events
-
Introduced6.13.0Fixed6.18.42Fixed7.1.6