Vulnerability in Linux

[ Description ]Official description

In the Linux kernel, the following vulnerability has been resolved: wifi: virt_wifi: free skb when disconnected When the simulated link is disconnected, virt_wifi_start_xmit() returns NET_XMIT_DROP without freeing the skb. dev_hard_start_xmit() treats this return value as consumed, so every packet sent while disconnected leaks its skb. Free the skb before returning the drop status.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund5 Oct 2026WID-SEC-2026-3743

  Linux Kernel: Multiple vulnerabilities Translated from German

  Risk mediumCVE-2026-98221CVE-2026-98181CVE-2026-98248+204 more CVEs

[ References ]References

• git.kernel.org/stable/c/36727a702cf8e3399e3da60d0856378f6afcfb34
• git.kernel.org/stable/c/38d3a5df85345f158f78b478b265ca906224454e
• git.kernel.org/stable/c/46371442847a725cc0df3697fea2eba1dd54b82b
• git.kernel.org/stable/c/4f266738af45675faa0e8afee08c6e780afa8b06
• git.kernel.org/stable/c/56469996c10a0240653fc00576b4d33bdfb4cc51
• git.kernel.org/stable/c/d177eca79e1106834bc423d3969a4a2e3987996a
• git.kernel.org/stable/c/ee053ea35c759135460f03d1c574f4ed08de844a
• git.kernel.org/stable/c/f9edf7cf63b96d2b776fca8d258d3c5256e40c8e