CVE-2023-53524 (GCVE-0-2023-53524)

Vulnerability from cvelistv5 – Published: 2025-10-01 11:46 – Updated: 2026-05-11 19:46
VLAI
Title
wifi: iwlwifi: pcie: Fix integer overflow in iwl_write_to_user_buf
Summary
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.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f7805b33f9b13a87b1fcf9dfbc3dcbce281a1436 , < 0ad8dd870aa187d0c21d032bb2c6433559075eec (git)
Affected: f7805b33f9b13a87b1fcf9dfbc3dcbce281a1436 , < 059e426d666a41e26b184c177c1ca3ee2d6fa1b6 (git)
Affected: f7805b33f9b13a87b1fcf9dfbc3dcbce281a1436 , < 82f877ec9b041edc4c7c509c605cc3393d837bf0 (git)
Affected: f7805b33f9b13a87b1fcf9dfbc3dcbce281a1436 , < eb1ef44efac797b384d361a76e33f77027c29a14 (git)
Affected: f7805b33f9b13a87b1fcf9dfbc3dcbce281a1436 , < de78456976026102babe66258c228691ca5677c0 (git)
Affected: f7805b33f9b13a87b1fcf9dfbc3dcbce281a1436 , < 58d1b717879bfeabe09b35e41ad667c79933eb2e (git)
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Linux Linux Affected: 5.0
Unaffected: 0 , < 5.0 (semver)
Unaffected: 5.4.244 , ≤ 5.4.* (semver)
Unaffected: 5.10.181 , ≤ 5.10.* (semver)
Unaffected: 5.15.113 , ≤ 5.15.* (semver)
Unaffected: 6.1.30 , ≤ 6.1.* (semver)
Unaffected: 6.3.4 , ≤ 6.3.* (semver)
Unaffected: 6.4 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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      "title": "SUSE CVE CVE-2023-53524",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-53524.json",
      "version": "21"
    }
  }
}



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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.