CVE-2024-49886: platform/x86: ISST: Fix the KASAN report slab-out-of-bounds bug

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

platform/x86: ISST: Fix the KASAN report slab-out-of-bounds bug

Attaching SST PCI device to VM causes "BUG: KASAN: slab-out-of-bounds". kasan report: [ 19.411889] ================================================================== [ 19.413702] BUG: KASAN: slab-out-of-bounds in isstifgetpcidev+0x3d5/0x400 [isstifcommon] [ 19.415634] Read of size 8 at addr ffff888829e65200 by task cpuhp/16/113 [ 19.417368] [ 19.418627] CPU: 16 PID: 113 Comm: cpuhp/16 Tainted: G E 6.9.0 #10 [ 19.420435] Hardware name: VMware, Inc. VMware20,1/440BX Desktop Reference Platform, BIOS VMW201.00V.20192059.B64.2207280713 07/28/2022 [ 19.422687] Call Trace: [ 19.424091] <TASK> [ 19.425448] dumpstacklvl+0x5d/0x80 [ 19.426963] ? isstifgetpcidev+0x3d5/0x400 [isstifcommon] [ 19.428694] printreport+0x19d/0x52e [ 19.430206] ? pfxrawspinlockirqsave+0x10/0x10 [ 19.431837] ? isstifgetpcidev+0x3d5/0x400 [isstifcommon] [ 19.433539] kasanreport+0xf0/0x170 [ 19.435019] ? isstifgetpcidev+0x3d5/0x400 [isstifcommon] [ 19.436709] isstifgetpcidev+0x3d5/0x400 [isstifcommon] [ 19.438379] ? pfxschedclockcpu+0x10/0x10 [ 19.439910] isstifcpuonline+0x406/0x58f [isstifcommon] [ 19.441573] ? pfxisstifcpuonline+0x10/0x10 [isstifcommon] [ 19.443263] ? ttwuqueuewakelist+0x2c1/0x360 [ 19.444797] cpuhpinvokecallback+0x221/0xec0 [ 19.446337] cpuhpthreadfun+0x21b/0x610 [ 19.447814] ? pfxcpuhpthreadfun+0x10/0x10 [ 19.449354] smpbootthreadfn+0x2e7/0x6e0 [ 19.450859] ? pfxsmpbootthreadfn+0x10/0x10 [ 19.452405] kthread+0x29c/0x350 [ 19.453817] ? pfxkthread+0x10/0x10 [ 19.455253] retfromfork+0x31/0x70 [ 19.456685] ? pfxkthread+0x10/0x10 [ 19.458114] retfromforkasm+0x1a/0x30 [ 19.459573] </TASK> [ 19.460853] [ 19.462055] Allocated by task 1198: [ 19.463410] kasansavestack+0x30/0x50 [ 19.464788] kasansavetrack+0x14/0x30 [ 19.466139] kasankmalloc+0xaa/0xb0 [ 19.467465] kmalloc+0x1cd/0x470 [ 19.468748] isstifcdevregister+0x1da/0x350 [isstifcommon] [ 19.470233] isstifmboxinit+0x108/0xff0 [isstifmboxmsr] [ 19.471670] dooneinitcall+0xa4/0x380 [ 19.472903] doinitmodule+0x238/0x760 [ 19.474105] loadmodule+0x5239/0x6f00 [ 19.475285] initmodulefromfile+0xd1/0x130 [ 19.476506] idempotentinitmodule+0x23b/0x650 [ 19.477725] x64sysfinitmodule+0xbe/0x130 [ 19.476506] idempotentinitmodule+0x23b/0x650 [ 19.477725] x64sysfinitmodule+0xbe/0x130 [ 19.478920] dosyscall64+0x82/0x160 [ 19.480036] entrySYSCALL64afterhwframe+0x76/0x7e [ 19.481292] [ 19.482205] The buggy address belongs to the object at ffff888829e65000 which belongs to the cache kmalloc-512 of size 512 [ 19.484818] The buggy address is located 0 bytes to the right of allocated 512-byte region [ffff888829e65000, ffff888829e65200) [ 19.487447] [ 19.488328] The buggy address belongs to the physical page: [ 19.489569] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888829e60c00 pfn:0x829e60 [ 19.491140] head: order:3 entiremapcount:0 nrpagesmapped:0 pincount:0 [ 19.492466] anon flags: 0x57ffffc0000840(slab|head|node=1|zone=2|lastcpupid=0x1fffff) [ 19.493914] pagetype: 0xffffffff() [ 19.494988] raw: 0057ffffc0000840 ffff88810004cc80 0000000000000000 0000000000000001 [ 19.496451] raw: ffff888829e60c00 0000000080200018 00000001ffffffff 0000000000000000 [ 19.497906] head: 0057ffffc0000840 ffff88810004cc80 0000000000000000 0000000000000001 [ 19.499379] head: ffff888829e60c00 0000000080200018 00000001ffffffff 0000000000000000 [ 19.500844] head: 0057ffffc0000003 ffffea0020a79801 ffffea0020a79848 00000000ffffffff [ 19.502316] head: 0000000800000000 0000000000000000 00000000ffffffff 0000000000000000 [ 19.503784] page dumped because: k ---truncated---