CVE-2023-53646 PUBLISHED

drm/i915/perf: add sentinel to xehp_oa_b_counters

Assigner: Linux
Reserved: 07.10.2025 Published: 07.10.2025 Updated: 07.10.2025

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

drm/i915/perf: add sentinel to xehp_oa_b_counters

Arrays passed to reg_in_range_table should end with empty record.

The patch solves KASAN detected bug with signature: BUG: KASAN: global-out-of-bounds in xehp_is_valid_b_counter_addr+0x2c7/0x350 [i915] Read of size 4 at addr ffffffffa1555d90 by task perf/1518

CPU: 4 PID: 1518 Comm: perf Tainted: G U 6.4.0-kasan_438-g3303d06107f3+ #1 Hardware name: Intel Corporation Meteor Lake Client Platform/MTL-P DDR5 SODIMM SBS RVP, BIOS MTLPFWI1.R00.3223.D80.2305311348 05/31/2023 Call Trace: <TASK> ... xehp_is_valid_b_counter_addr+0x2c7/0x350 [i915]

(cherry picked from commit 2f42c5afb34b5696cf5fe79e744f99be9b218798)

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 0fa9349dda030fa847b36f880a5eea25c3202b66 to 21d92025e80629fd5c25cd6751f8cf38c784dd4a (excl.)
  • affected from 0fa9349dda030fa847b36f880a5eea25c3202b66 to 785b3f667b4bf98804cad135005e964df0c750de (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.2 is affected
  • unaffected from 0 to 6.2 (excl.)
  • unaffected from 6.4.7 to 6.4.* (incl.)
  • unaffected from 6.5 to * (incl.)

References