In the Linux kernel, the following vulnerability has been resolved:net: marvell: prestera: fix port event handling on initFor some reason there might be a crash during ports creation if portevents are handling at the same time  because fw may send initialport event with down state.The crash points to cancel_delayed_work() which is called when port wentis down.  Currently I did not find out the real cause of the issue, sofixed it by cancel port stats work only if previous port's state was up& runnig.The following is the crash which can be triggered:[   28.311104] Unable to handle kernel paging request at virtual address000071775f776600[   28.319097] Mem abort info:[   28.321914]   ESR = 0x96000004[   28.324996]   EC = 0x25: DABT (current EL), IL = 32 bits[   28.330350]   SET = 0, FnV = 0[   28.333430]   EA = 0, S1PTW = 0[   28.336597] Data abort info:[   28.339499]   ISV = 0, ISS = 0x00000004[   28.343362]   CM = 0, WnR = 0[   28.346354] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000100bf7000[   28.352842] [000071775f776600] pgd=0000000000000000,p4d=0000000000000000[   28.359695] Internal error: Oops: 96000004 [#1] PREEMPT SMP[   28.365310] Modules linked in: prestera_pci(+) presterauio_pdrv_genirq[   28.372005] CPU: 0 PID: 1291 Comm: kworker/0:1H Not tainted5.11.0-rc4 #1[   28.378846] Hardware name: DNI AmazonGo1 A7040 board (DT)[   28.384283] Workqueue: prestera_fw_wq prestera_fw_evt_work_fn[prestera_pci][   28.391413] pstate: 60000085 (nZCv daIf -PAN -UAO -TCO BTYPE=--)[   28.397468] pc : get_work_pool+0x48/0x60[   28.401442] lr : try_to_grab_pending+0x6c/0x1b0[   28.406018] sp : ffff80001391bc60[   28.409358] x29: ffff80001391bc60 x28: 0000000000000000[   28.414725] x27: ffff000104fc8b40 x26: ffff80001127de88[   28.420089] x25: 0000000000000000 x24: ffff000106119760[   28.425452] x23: ffff00010775dd60 x22: ffff00010567e000[   28.430814] x21: 0000000000000000 x20: ffff80001391bcb0[   28.436175] x19: ffff00010775deb8 x18: 00000000000000c0[   28.441537] x17: 0000000000000000 x16: 000000008d9b0e88[   28.446898] x15: 0000000000000001 x14: 00000000000002ba[   28.452261] x13: 80a3002c00000002 x12: 00000000000005f4[   28.457622] x11: 0000000000000030 x10: 000000000000000c[   28.462985] x9 : 000000000000000c x8 : 0000000000000030[   28.468346] x7 : ffff800014400000 x6 : ffff000106119758[   28.473708] x5 : 0000000000000003 x4 : ffff00010775dc60[   28.479068] x3 : 0000000000000000 x2 : 0000000000000060[   28.484429] x1 : 000071775f776600 x0 : ffff00010775deb8[   28.489791] Call trace:[   28.492259]  get_work_pool+0x48/0x60[   28.495874]  cancel_delayed_work+0x38/0xb0[   28.500011]  prestera_port_handle_event+0x90/0xa0 [prestera][   28.505743]  prestera_evt_recv+0x98/0xe0 [prestera][   28.510683]  prestera_fw_evt_work_fn+0x180/0x228 [prestera_pci][   28.516660]  process_one_work+0x1e8/0x360[   28.520710]  worker_thread+0x44/0x480[   28.524412]  kthread+0x154/0x160[   28.527670]  ret_from_fork+0x10/0x38[   28.531290] Code: a8c17bfd d50323bf d65f03c0 9278dc21 (f9400020)[   28.537429] ---[ end trace 5eced933df3a080b ]---
CWE-400 Uncontrolled Resource Consumption