CVE-2026-90378

Summary

In the Linux kernel, the following vulnerability has been resolved:

wifi: mt76: mt792x: Fix memory leak in SDIO TX path

When tx_prepare_skb() returns an error in the SDIO TX path, the skb is not freed, leading to a memory leak. This can occur when zero-length frames (such as WNM NULL frames) are dropped to prevent potential hardware TX hangs.

Fix this by properly releasing the skb with ieee80211_tx_status_ext() when tx_prepare_skb() fails.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxb747fa343817fd322b4463dda99d28fc51e19c52 < b64d196280aff8494ba6fb387e37b18479c99b83affected
LinuxLinuxb747fa343817fd322b4463dda99d28fc51e19c52 < 9ef1351209d42b7d96604f2a13d7ea8215a24e07affected
LinuxLinuxb747fa343817fd322b4463dda99d28fc51e19c52 < c2c7f16f2c62f79f7c381e500afa7123580742a5affected
LinuxLinuxb747fa343817fd322b4463dda99d28fc51e19c52 < 6a8000c76dc34490a2bb321ad1a5f882a2ccab7caffected
LinuxLinuxb747fa343817fd322b4463dda99d28fc51e19c52 < ddf6a17d8e3d0dbb841c13c10d7c1340a138a80daffected
LinuxLinuxb747fa343817fd322b4463dda99d28fc51e19c52 < 6a342db7a6502bc6781579145e05d4d4731786abaffected
LinuxLinuxb747fa343817fd322b4463dda99d28fc51e19c52 < 808f2767d4217a5b96f674288573b9b89d432eedaffected
LinuxLinux5.12affected
LinuxLinux0 < 5.12unaffected
LinuxLinux5.15.221 <= 5.15.*unaffected
LinuxLinux6.1.188 <= 6.1.*unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References