EUVD-2026-101071
GHSA-7fq6-p34m-gv65
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Alert meAnalysisCVE.org
In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: reset the AP_VLAN tailroom counter on ifdown
On ifup, AP_VLAN interfaces get crypto_tx_tailroom_needed_cnt from the AP interface, but it's never decremented again unless the AP is also brought down. Thus, bringing the same AP_VLAN up again will increment the counter again and eventually hit the sanity check:
WARN_ON_ONCE(sdata->crypto_tx_tailroom_needed_cnt != master->crypto_tx_tailroom_needed_cnt);
Reset it on ifdown to avoid that.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
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Lifecycle Timeline
2Threat Intelligence Overview
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How this decision was reached
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What every action level means
Attack Technique
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
Exploit-DB