CVE-2024-57899

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

wifi: mac80211: fix mbss changed flags corruption on 32 bit systems

On 32-bit systems, the size of an unsigned long is 4 bytes, while a u64 is 8 bytes. Therefore, when using oreachsetbit(bit, &bits, sizeof(changed) * BITSPER_BYTE), the code is incorrectly searching for a bit in a 32-bit variable that is expected to be 64 bits in size, leading to incorrect bit finding.

Solution: Ensure that the size of the bits variable is correctly adjusted for each architecture.

Call Trace: ? show_regs+0x54/0x58 ? _warn+0x6b/0xd4 ? ieee80211linkinfochangenotify+0xcc/0xd4 [mac80211] ? reportbug+0x113/0x150 ? excoverflow+0x30/0x30 ? handlebug+0x27/0x44 ? excinvalidop+0x18/0x50 ? handleexception+0xf6/0xf6 ? excoverflow+0x30/0x30 ? ieee80211linkinfochangenotify+0xcc/0xd4 [mac80211] ? excoverflow+0x30/0x30 ? ieee80211linkinfochangenotify+0xcc/0xd4 [mac80211] ? ieee80211meshwork+0xff/0x260 [mac80211] ? cfg80211wiphywork+0x72/0x98 [cfg80211] ? processonework+0xf1/0x1fc ? workerthread+0x2c0/0x3b4 ? kthread+0xc7/0xf0 ? moddelayedworkon+0x4c/0x4c ? kthreadcompleteandexit+0x14/0x14 ? retfromfork+0x24/0x38 ? kthreadcompleteandexit+0x14/0x14 ? retfromforkasm+0xf/0x14 ? entryINT8032+0xf0/0xf0

[restore no-op path for no changes]