Answer in brief
CVE-2026-90114 records a Unknown severity vulnerability in net: bridge: Reject descending VLAN tunnel ranges. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=94339443686b36d3223bc032b7947267474e2679 <1181f6bad009408a259bab6aaf0681f11b487972 || >=94339443686b36d3223bc032b7947267474e2679 <5a8e0e3a18b5e3172343b8479c5d04187f5b4795 || >=94339443686b36d3223bc032b7947267474e2679 <0874a6d5275091429ec4c675c54c53a8776665ae || >=94339443686b36d3223bc032b7947267474e2679 <4b0f5b25f114651f03058395b490626c4444875e || >=94339443686b36d3223bc032b7947267474e2679 <bd741b819ff1c239d26cc5b0f0e6b1fd4e67ed17 || >=94339443686b36d3223bc032b7947267474e2679 <c0444d7499f113d6b7803ef0175591464e17525e || >=94339443686b36d3223bc032b7947267474e2679 <434849b21ef56b09d16e6366b2a230002f363e45 || >=94339443686b36d3223bc032b7947267474e2679 <b74a072d8fb71d3c9ffba4a17d5943e63266fb38 | 1181f6bad009408a259bab6aaf0681f11b487972, 5a8e0e3a18b5e3172343b8479c5d04187f5b4795, 0874a6d5275091429ec4c675c54c53a8776665ae, 4b0f5b25f114651f03058395b490626c4444875e, bd741b819ff1c239d26cc5b0f0e6b1fd4e67ed17, c0444d7499f113d6b7803ef0175591464e17525e, 434849b21ef56b09d16e6366b2a230002f363e45, b74a072d8fb71d3c9ffba4a17d5943e63266fb38 |
| Linux/Linuxgeneric | 5.9 | Not reported |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
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.
Quoted source text, attributed separately from HOL analysis.