CVE-2025-37761

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

drm/xe: Fix an out-of-bounds shift when invalidating TLB

When the size of the range invalidated is larger than rounddownpowoftwo(ULONGMAX), The function macro rounduppowof_two(length) will hit an out-of-bounds shift [1].

Use a full TLB invalidation for such cases. v2: - Use a define for the range size limit over which we use a full TLB invalidation. (Lucas) - Use a better calculation of the limit.

[ 39.202657] UBSAN: shift-out-of-bounds in ./include/linux/log2.h:57:13 [ 39.202673] shift exponent 64 is too large for 64-bit type 'long unsigned int' [ 39.202688] CPU: 8 UID: 0 PID: 3129 Comm: xeexecsystem_ Tainted: G U 6.14.0+ #10 [ 39.202690] Tainted: [U]=USER [ 39.202690] Hardware name: ASUS System Product Name/PRIME B560M-A AC, BIOS 2001 02/01/2023 [ 39.202691] Call Trace: [ 39.202692] <TASK> [ 39.202695] dumpstacklvl+0x6e/0xa0 [ 39.202699] ubsanepilogue+0x5/0x30 [ 39.202701] _ubsanhandleshiftoutofbounds.cold+0x61/0xe6 [ 39.202705] xegttlbinvalidationrange.cold+0x1d/0x3a [xe] [ 39.202800] ? findheldlock+0x2b/0x80 [ 39.202803] ? markheldlocks+0x40/0x70 [ 39.202806] xesvminvalidate+0x459/0x700 [xe] [ 39.202897] drmgpusvmnotifierinvalidate+0x4d/0x70 [drmgpusvm] [ 39.202900] _mmunotifierrelease+0x1f5/0x270 [ 39.202905] exitmmap+0x40e/0x450 [ 39.202912] _mmput+0x45/0x110 [ 39.202914] exitmm+0xc5/0x130 [ 39.202916] doexit+0x21c/0x500 [ 39.202918] ? lockdephardirqsonprepare+0xdb/0x190 [ 39.202920] dogroupexit+0x36/0xa0 [ 39.202922] getsignal+0x8f8/0x900 [ 39.202926] archdosignalorrestart+0x35/0x100 [ 39.202930] syscallexittousermode+0x1fc/0x290 [ 39.202932] dosyscall64+0xa1/0x180 [ 39.202934] ? douseraddrfault+0x59f/0x8a0 [ 39.202937] ? lockrelease+0xd2/0x2a0 [ 39.202939] ? douseraddrfault+0x5a9/0x8a0 [ 39.202942] ? tracehardirqsoff+0x4b/0xc0 [ 39.202944] ? clearbhbloop+0x25/0x80 [ 39.202946] ? clearbhbloop+0x25/0x80 [ 39.202947] ? clearbhbloop+0x25/0x80 [ 39.202950] entrySYSCALL64after_hwframe+0x76/0x7e [ 39.202952] RIP: 0033:0x7fa945e543e1 [ 39.202961] Code: Unable to access opcode bytes at 0x7fa945e543b7. [ 39.202962] RSP: 002b:00007ffca8fb4170 EFLAGS: 00000293 [ 39.202963] RAX: 000000000000003d RBX: 0000000000000000 RCX: 00007fa945e543e3 [ 39.202964] RDX: 0000000000000000 RSI: 00007ffca8fb41ac RDI: 00000000ffffffff [ 39.202964] RBP: 00007ffca8fb4190 R08: 0000000000000000 R09: 00007fa945f600a0 [ 39.202965] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 39.202966] R13: 00007fa9460dd310 R14: 00007ffca8fb41ac R15: 0000000000000000 [ 39.202970] </TASK> [ 39.202970] ---[ end trace ]---

(cherry picked from commit b88f48f86500bc0b44b4f73ac66d500a40d320ad)