| Title | D-Link DIR895LA1_102b07 A1_102b07 Out-of-bounds Write |
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| Description | An out-of-bounds write vulnerability exists in the L2TP control channel parser of D-Link DIR-895L. When the device is configured to use L2TP or L2TPv6 WAN connectivity, a malicious upstream L2TP peer can send a crafted control packet containing a large Host Name AVP and trigger a one-byte write past the end of the `peer_hostname` buffer during tunnel setup.
The same bug pattern exists in both the IPv4 and IPv6 L2TP parser variants included in the GPL package. |
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| Source | ⚠️ https://tzh00203.notion.site/D-Link-DIR-895L-L2TP-Host-Name-AVP-Out-of-Bounds-Write-33cb5c52018a8061b139cacc39d58fff |
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| User | tian (UID 93438) |
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| Submission | 07/27/2026 11:32 (2 months ago) |
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| Moderation | 09/26/2026 11:19 (2 months later) |
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| Status | Accepted |
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| VulDB entry | 410614 [D-Link DIR-895L A1_102b07 L2TP Control Channel Parser tunnel.c tunnel_set_params out-of-bounds write] |
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| Points | 17 |
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