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CVE-2026-90114

net: bridge: Reject descending VLAN tunnel ranges

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 94339443686b36d3223bc032b7947267474e2679
Version < 1181f6bad009408a259bab6aaf0681f11b487972
Status affected
Version 94339443686b36d3223bc032b7947267474e2679
Version < 5a8e0e3a18b5e3172343b8479c5d04187f5b4795
Status affected
Version 94339443686b36d3223bc032b7947267474e2679
Version < 0874a6d5275091429ec4c675c54c53a8776665ae
Status affected
Version 94339443686b36d3223bc032b7947267474e2679
Version < 4b0f5b25f114651f03058395b490626c4444875e
Status affected
Version 94339443686b36d3223bc032b7947267474e2679
Version < bd741b819ff1c239d26cc5b0f0e6b1fd4e67ed17
Status affected
Version 94339443686b36d3223bc032b7947267474e2679
Version < c0444d7499f113d6b7803ef0175591464e17525e
Status affected
Version 94339443686b36d3223bc032b7947267474e2679
Version < 434849b21ef56b09d16e6366b2a230002f363e45
Status affected
Version 94339443686b36d3223bc032b7947267474e2679
Version < b74a072d8fb71d3c9ffba4a17d5943e63266fb38
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 5.9
Status affected
Version 0
Version < 5.9
Status unaffected
Version <= 5.10.*
Version 5.10.270
Status unaffected
Version <= 5.15.*
Version 5.15.221
Status unaffected
Version <= 6.1.*
Version 6.1.188
Status unaffected
Version <= 6.6.*
Version 6.6.157
Status unaffected
Version <= 6.12.*
Version 6.12.110
Status unaffected
Version <= 6.18.*
Version 6.18.52
Status unaffected
Version <= 7.2.*
Version 7.2.6
Status unaffected
Version <= *
Version 7.3-rc1
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.21% 0.116
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/1181f6bad009408a259bab6aaf0681f11b487972
https://git.kernel.org/stable/c/5a8e0e3a18b5e3172343b8479c5d04187f5b4795
https://git.kernel.org/stable/c/0874a6d5275091429ec4c675c54c53a8776665ae
https://git.kernel.org/stable/c/4b0f5b25f114651f03058395b490626c4444875e
https://git.kernel.org/stable/c/bd741b819ff1c239d26cc5b0f0e6b1fd4e67ed17
https://git.kernel.org/stable/c/c0444d7499f113d6b7803ef0175591464e17525e
https://git.kernel.org/stable/c/434849b21ef56b09d16e6366b2a230002f363e45
https://git.kernel.org/stable/c/b74a072d8fb71d3c9ffba4a17d5943e63266fb38