Description
In the Linux kernel, the following vulnerability has been resolved: wifi: rtl8xxxu: fix slab-out-of-bounds in rtl8xxxu_sta_add The driver does not set hw->sta_data_size, which causes mac80211 to allocate insufficient space for driver private station data in __sta_info_alloc(). When rtl8xxxu_sta_add() accesses members of struct rtl8xxxu_sta_info through sta->drv_priv, this results in a slab-out-of-bounds write. KASAN report on RISC-V (VisionFive 2) with RTL8192EU adapter: BUG: KASAN: slab-out-of-bounds in rtl8xxxu_sta_add+0x31c/0x346 Write of size 8 at addr ffffffd6d3e9ae88 by task kworker/u16:0/12 Set hw->sta_data_size to sizeof(struct rtl8xxxu_sta_info) during probe, similar to how hw->vif_data_size is configured. This ensures mac80211 allocates sufficient space for the driver's per-station private data. Tested on StarFive VisionFive 2 v1.2A board.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
eef55f1545c92c7181d5083453dee1296298ad3e to < 5d810ba377eddee95d30766d360a14efbb3d1872affectedeef55f1545c92c7181d5083453dee1296298ad3e to < 116f7bd8160c6b37d1c6939385abf90f6f6ed2f5affectedeef55f1545c92c7181d5083453dee1296298ad3e to < 9a0f3fa6ecd0c9c32dbc367a57482bbf7c7d25bfaffectedeef55f1545c92c7181d5083453dee1296298ad3e to < 86c946bcc00f6390ef65e9614ae60a9377e454f8affected
Linux Linux
Default version status: affected
6.9affected0 to < 6.9unaffected6.12.72 to ≤ 6.12.*unaffected6.18.11 to ≤ 6.18.*unaffected6.19.1 to ≤ 6.19.*unaffected7.0 to ≤ *unaffected