CVE-2026-90114

CVE CVE-2026-90114EUVD EUVD-2026-81707Published 2026-09-17T16:06:20.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: net: bridge: Reject descending VLAN tunnel ranges A pair of descending VLAN and tunnel IDs can pass the tunnel range span check. The VLAN subtraction produces a negative int, which is converted to unsigned when compared with the u32 tunnel ID subtraction. It can therefore equal the wrapped tunnel ID delta. The range loop then performs no iterations. Since the batched notification handling added a post-loop error check, this leaves err uninitialized and makes the request's return value unpredictable. Reject descending VLAN ranges before comparing the spans. Valid ascending and single-entry ranges remain unchanged, while malformed descending ranges consistently return -EINVAL. This issue was found by a static analysis checker and confirmed by manual source review.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 94339443686b36d3223bc032b7947267474e2679 <0874a6d5275091429ec4c675c54c53a8776665ae; 94339443686b36d3223bc032b7947267474e2679 <5a8e0e3a18b5e3172343b8479c5d04187f5b4795; 94339443686b36d3223bc032b7947267474e2679 <b74a072d8fb71d3c9ffba4a17d5943e63266fb38; patch: 6.6.157; 94339443686b36d3223bc032b7947267474e2679 <434849b21ef56b09d16e6366b2a230002f363e45; 94339443686b36d3223bc032b7947267474e2679 <bd741b819ff1c239d26cc5b0f0e6b1fd4e67ed17; 94339443686b36d3223bc032b7947267474e2679 <c0444d7499f113d6b7803ef0175591464e17525e; 5.9; patch: 7.2.6; patch: 6.12.110; patch: 0; 94339443686b36d3223bc032b7947267474e2679 <4b0f5b25f114651f03058395b490626c4444875e; patch: 6.18.52; patch: 5.10.270; patch: 6.1.188; patch: 5.15.221; 94339443686b36d3223bc032b7947267474e2679 <1181f6bad009408a259bab6aaf0681f11b487972; patch: 7.3-rc1

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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