CVE-2023-53646

drm/i915/perf: add sentinel to xehp_oa_b_counters

State: Published
Severity: 7.8 High
Published: Oct 7, 2025
Updated: Aug 5, 2026
Reserved: Oct 7, 2025

Description

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)

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	0fa9349dda030fa847b36f880a5eea25c3202b66 to before 21d92025e80629fd5c25cd6751f8cf38c784dd4aAffected 0fa9349dda030fa847b36f880a5eea25c3202b66 to before 785b3f667b4bf98804cad135005e964df0c750deAffected
LinuxLinux	6.2Affected before 6.2Not affected 6.4.7 through 6.4.*Not affected 6.5 and laterNot affected

References

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