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🛡️ CVE-2023-53395 — kernel

🟠 CVSS 7.8 — High ✅ No Known Exploit NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

ACPICA: Add AML_NO_OPERAND_RESOLVE flag to Timer

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

ACPICA: Add AML_NO_OPERAND_RESOLVE flag to Timer

ACPICA commit 90310989a0790032f5a0140741ff09b545af4bc5

According to the ACPI specification 19.6.134, no argument is required to be passed for ASL Timer instruction. For taking care of no argument, AML_NO_OPERAND_RESOLVE flag is added to ASL Timer instruction opcode.

When ASL timer instruction interpreted by ACPI interpreter, getting error. After adding AML_NO_OPERAND_RESOLVE flag to ASL Timer instruction opcode, issue is not observed.

=============================================================

UBSAN: array-index-out-of-bounds in acpica/dswexec.c:401:12 index -1 is out of range for type 'union acpi_operand_object *[9]'

CPU: 37 PID: 1678 Comm: cat Not tainted

6.0.0-dev-th500-6.0.y-1+bcf8c46459e407-generic-64k

HW name: NVIDIA BIOS v1.1.1-d7acbfc-dirty 12/19/2022 Call trace:

dump_backtrace+0xe0/0x130

show_stack+0x20/0x60

dump_stack_lvl+0x68/0x84

dump_stack+0x18/0x34

ubsan_epilogue+0x10/0x50

__ubsan_handle_out_of_bounds+0x80/0x90

acpi_ds_exec_end_op+0x1bc/0x6d8

acpi_ps_parse_loop+0x57c/0x618

acpi_ps_parse_aml+0x1e0/0x4b4

acpi_ps_execute_method+0x24c/0x2b8

acpi_ns_evaluate+0x3a8/0x4bc

acpi_evaluate_object+0x15c/0x37c

acpi_evaluate_integer+0x54/0x15c

show_power+0x8c/0x12c [acpi_power_meter]

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

  • Attack vector: Local — a local account, shell or session on the host is needed.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: Low — an ordinary user account is enough.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: High — total loss, or loss the attacker controls.

Affected software

CVE-2023-53395 is recorded against 2 packages.

  • kernel (from 6.2.0 up to 6.5.5)
  • linux-kernel (from 6.2 up to 6.5.5)

Timeline and source

Published on 18 September 2025 and last revised on 12 August 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

Other advisories for this package

kernel has other advisories on record. If you are patching this one, these are worth checking on the same host:

CVE-2023-53395 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity High
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2025-09-18
Updated 2026-08-20
Modified 2026-08-12

Affected Packages

Software From version Fixed in
kernel 6.2.0 6.5.5
linux-kernel 6.2 6.5.5

References

Similar Threats

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