CVE-2023-53524

HIGH EPSS 5.3%
Published Oct 1, 20259mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Oct 1, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: pcie: Fix integer overflow in iwl_write_to_user_buf An integer overflow occurs in the iwl_write_to_user_buf() function, which is called by the iwl_dbgfs_monitor_data_read() function. static bool iwl_write_to_user_buf(char __user *user_buf, ssize_t count, void *buf, ssize_t *size, ssize_t *bytes_copied) { int buf_size_left = count - *bytes_copied; buf_size_left = buf_size_left - (buf_size_left % sizeof(u32)); if (*size > buf_size_left) *size = buf_size_left; If the user passes a SIZE_MAX value to the "ssize_t count" parameter, the ssize_t count parameter is assigned to "int buf_size_left". Then compare "*size" with "buf_size_left" . Here, "buf_size_left" is a negative number, so "*size" is assigned "buf_size_left" and goes into the third argument of the copy_to_user function, causing a heap overflow. This is not a security vulnerability because iwl_dbgfs_monitor_data_read() is a debugfs operation with 0400 privileges.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
5.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-190 Integer Overflow or Wraparound Numeric Error

Affected Products 5

VendorProductVersionRange
linuxlinux_kernel*≥5.0  –  <5.4.244
linuxlinux_kernel*≥5.5  –  <5.10.181
linuxlinux_kernel*≥5.11  –  <5.15.113
linuxlinux_kernel*≥5.16  –  <6.1.30
linuxlinux_kernel*≥6.2  –  <6.3.4

References 6

  • git.kernel.org https://git.kernel.org/stable/c/059e426d666a41e26b184c177c1ca3ee2d6fa1b6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/0ad8dd870aa187d0c21d032bb2c6433559075eec
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/58d1b717879bfeabe09b35e41ad667c79933eb2e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/82f877ec9b041edc4c7c509c605cc3393d837bf0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/de78456976026102babe66258c228691ca5677c0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/eb1ef44efac797b384d361a76e33f77027c29a14
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/059e426d666a41e26b184c177c1ca3ee2d6fa1b6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/0ad8dd870aa187d0c21d032bb2c6433559075eec
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/58d1b717879bfeabe09b35e41ad667c79933eb2e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/82f877ec9b041edc4c7c509c605cc3393d837bf0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/de78456976026102babe66258c228691ca5677c0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/eb1ef44efac797b384d361a76e33f77027c29a14
    Patch