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VULNERABILITIES

CVE-2026-98422 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://git.kernel.org/stable/c/304a874670a0b6ab5589a7f60b4af0251797b121 kernel.org
https://git.kernel.org/stable/c/3d76b45e8432c0d75fcb9e90d92eaa3176898adf kernel.org
https://git.kernel.org/stable/c/4504f3960dc4501c73be9f99eabda2e26e9db41e kernel.org
https://git.kernel.org/stable/c/4b54d01b48445b66c9e576de92b90a3a3ae7b34a kernel.org
https://git.kernel.org/stable/c/7775759e3cb35ef5a571b2d877c2a9b70a5d5f08 kernel.org

see all 8 references

Weakness Enumeration

No weakness enumeration is available for this CVE.

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-98422
NVD Published Date:
Oct 14, 2026
NVD Last Modified:
Oct 19, 2026
Source:
kernel.org
CVE-2026-98422 Details - Not Deferred