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Fixed

LIN1025-962 : Security Advisory - linux - CVE-2023-53075

Created: May 5, 2025 Updated: Sep 1, 2025

Resolved Date: May 11, 2025

Found In Version: 10.25.33.1

Severity: Standard

Applicable for: Wind River Linux LTS 25

Component/s: Kernel

Description

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

ftrace: Fix invalid address access in lookup_rec() when index is 0

KASAN reported follow problem:

 BUG: KASAN: use-after-free in lookup_rec
 Read of size 8 at addr ffff000199270ff0 by task modprobe
 CPU: 2 Comm: modprobe
 Call trace:
  kasan_report
  __asan_load8
  lookup_rec
  ftrace_location
  arch_check_ftrace_location
  check_kprobe_address_safe
  register_kprobe

When checking pg->recordspg->index - 1].ip in lookup_rec(), it can get a
pg which is newly added to ftrace_pages_start in ftrace_process_locs().
Before the first pg->index++, index is 0 and accessing pg->records[-1].ip
will cause this problem.

Don't check the ip when pg->index is 0.

CREATE(Triage):(User=admin) [CVE-2023-53075 (https://nvd.nist.gov/vuln/detail/CVE-2023-53075)