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

drm/amdgpu: flush pending RCU callbacks on module unload

Call rcu barrier() in module exit to wait for outstanding call rcu() callbacks before freeing module text, preventing late callback execution in freed memory.

BUG: unable to handle page fault for address: ffffffffc1d59c40 PGD 6a12067 P4D 6a12067 PUD 6a14067 PMD 13698b067 PTE 0 Oops: 0010 [#1] SMP NOPTI RIP: 0010:0xffffffffc1d59c40 Code: Unable to access opcode bytes at RIP 0xffffffffc1d59c16. RSP: 0018:ffffc900198c0f28 EFLAGS: 00010286 RAX: ffffffffc1d59c40 RBX: ffff897c7d6b61c0 RCX: ffff88826aff4590 RDX: ffff8884d8b35490 RSI: ffffc900198c0f30 RDI: ffff88812af67290 RBP: 000000000000000a (DONE segment entries) R08: 0000000000000000 R09: 0000000000000100 R10: 0000000000000000 R11: ffffffff82a06100 R12: ffff88811a4e3700 R13: 0000000000000000 R14: ffff897c7d6b6270 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff897c7d680000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffc1d59c16 CR3: 00000104a980a001 CR4: 0000000002770ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: ? rcu do batch+0x163/0x450 ? rcu core+0x177/0x1c0 ? do softirq+0xc1/0x280 ? asm call irq on stack+0xf/0x20 ? do softirq own stack+0x37/0x50 ? irq exit rcu+0xc4/0x100 ? sysvec apic timer interrupt+0x36/0x80 ? asm sysvec apic timer interrupt+0x12/0x20 ? cpuidle enter state+0xd4/0x360 ? cpuidle enter+0x29/0x40 ? cpuidle idle call+0x108/0x1a0 ? do idle+0x77/0xf0 ? cpu startup entry+0x19/0x20 ? secondary startup 64 no verify+0xbf/0xcb

(cherry picked from commit feaa5039f6c12acc9aa934c2d45dcd251a12c69f)