CVE-2023-52832

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: don't return unset power in ieee80211_get_tx_power() We can get a UBSAN warning if ieee80211_get_tx_power() returns the INT_MIN value mac80211 internally uses for "unset power level". UBSAN: signed-integer-overflow in net/wireless/nl80211.c:3816:5 -2147483648 * 100 cannot be represented in type 'int' CPU: 0 PID: 20433 Comm: insmod Tainted: G WC OE Call Trace: dump_stack+0x74/0x92 ubsan_epilogue+0x9/0x50 handle_overflow+0x8d/0xd0 __ubsan_handle_mul_overflow+0xe/0x10 nl80211_send_iface+0x688/0x6b0 [cfg80211] [...] cfg80211_register_wdev+0x78/0xb0 [cfg80211] cfg80211_netdev_notifier_call+0x200/0x620 [cfg80211] [...] ieee80211_if_add+0x60e/0x8f0 [mac80211] ieee80211_register_hw+0xda5/0x1170 [mac80211] In this case, simply return an error instead, to indicate that no data is available.

• linux linux kernel (< 4.14.331) • linux linux kernel (>= 4.15 < 4.19.300) • linux linux kernel (>= 4.20 < 5.4.262) • linux linux kernel (>= 5.5 < 5.10.202) • linux linux kernel (>= 5.11 < 5.15.140) • linux linux kernel (>= 5.16 < 6.1.64) • linux linux kernel (>= 6.2 < 6.5.13) • linux linux kernel (>= 6.6 < 6.6.3)