{"id":"DEBIAN-CVE-2023-53524","details":"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, \t\t\t\t  void *buf, ssize_t *size, \t\t\t\t  ssize_t *bytes_copied) { \tint buf_size_left = count - *bytes_copied;  \tbuf_size_left = buf_size_left - (buf_size_left % sizeof(u32)); \tif (*size \u003e buf_size_left) \t\t*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.","modified":"2026-09-15T09:02:51.573890682Z","published":"2025-10-01T12:15:56.880Z","upstream":["CVE-2023-53524"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2023-53524"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.37-1"}]}],"versions":["6.1.27-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53524.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.3.7-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53524.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.3.7-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53524.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}