CVE-2026-98146

Summary

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

accel/amdxdna: Remove __counted_by from struct amdxdna_cmd_chain

struct amdxdna_cmd_chain contains a flexible array annotated with __counted_by(command_count). Since the structure is stored in shared AMDXDNA_BO_SHARE memory, userspace can modify command_count concurrently. If command_count is changed to zero, the bounds check generated from __counted_by may fail and trigger a kernel panic.

Remove __counted_by to avoid relying on the userspace-controlled command_count for the flexible array bounds check.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxaac243092b707bb3018e951d470cc1a9bcbaba6c < 93fa3e925b15b0ded0a549fe7f12bfbb1c4e171aaffected
LinuxLinuxaac243092b707bb3018e951d470cc1a9bcbaba6c < 52f3e086760a9a3e02a46a10b57caffd73b1c204affected
LinuxLinuxaac243092b707bb3018e951d470cc1a9bcbaba6c < b3709d354545e70388177500761f92d906c4dfd6affected
LinuxLinux6.14affected
LinuxLinux0 < 6.14unaffected
LinuxLinux6.18.53 <= 6.18.*unaffected
LinuxLinux7.2.7 <= 7.2.*unaffected
LinuxLinux7.3-rc2 <= *unaffected

Weaknesses

References