{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53524","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-10-01T11:39:39.407Z","datePublished":"2025-10-01T11:46:10.397Z","dateUpdated":"2026-05-11T19:46:38.536Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:46:38.536Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: pcie: Fix integer overflow in iwl_write_to_user_buf\n\nAn integer overflow occurs in the iwl_write_to_user_buf() function,\nwhich is called by the iwl_dbgfs_monitor_data_read() function.\n\nstatic bool iwl_write_to_user_buf(char __user *user_buf, ssize_t count,\n\t\t\t\t  void *buf, ssize_t *size,\n\t\t\t\t  ssize_t *bytes_copied)\n{\n\tint buf_size_left = count - *bytes_copied;\n\n\tbuf_size_left = buf_size_left - (buf_size_left % sizeof(u32));\n\tif (*size > buf_size_left)\n\t\t*size = buf_size_left;\n\nIf the user passes a SIZE_MAX value to the \"ssize_t count\" parameter,\nthe ssize_t count parameter is assigned to \"int buf_size_left\".\nThen compare \"*size\" with \"buf_size_left\" . Here, \"buf_size_left\" is a\nnegative number, so \"*size\" is assigned \"buf_size_left\" and goes into\nthe third argument of the copy_to_user function, causing a heap overflow.\n\nThis is not a security vulnerability because iwl_dbgfs_monitor_data_read()\nis a debugfs operation with 0400 privileges."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/intel/iwlwifi/pcie/trans.c"],"versions":[{"version":"f7805b33f9b13a87b1fcf9dfbc3dcbce281a1436","lessThan":"0ad8dd870aa187d0c21d032bb2c6433559075eec","status":"affected","versionType":"git"},{"version":"f7805b33f9b13a87b1fcf9dfbc3dcbce281a1436","lessThan":"059e426d666a41e26b184c177c1ca3ee2d6fa1b6","status":"affected","versionType":"git"},{"version":"f7805b33f9b13a87b1fcf9dfbc3dcbce281a1436","lessThan":"82f877ec9b041edc4c7c509c605cc3393d837bf0","status":"affected","versionType":"git"},{"version":"f7805b33f9b13a87b1fcf9dfbc3dcbce281a1436","lessThan":"eb1ef44efac797b384d361a76e33f77027c29a14","status":"affected","versionType":"git"},{"version":"f7805b33f9b13a87b1fcf9dfbc3dcbce281a1436","lessThan":"de78456976026102babe66258c228691ca5677c0","status":"affected","versionType":"git"},{"version":"f7805b33f9b13a87b1fcf9dfbc3dcbce281a1436","lessThan":"58d1b717879bfeabe09b35e41ad667c79933eb2e","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/intel/iwlwifi/pcie/trans.c"],"versions":[{"version":"5.0","status":"affected"},{"version":"0","lessThan":"5.0","status":"unaffected","versionType":"semver"},{"version":"5.4.244","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.181","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.113","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.30","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.3.4","lessThanOrEqual":"6.3.*","status":"unaffected","versionType":"semver"},{"version":"6.4","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"5.4.244"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"5.10.181"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"5.15.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.1.30"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.3.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.4"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/0ad8dd870aa187d0c21d032bb2c6433559075eec"},{"url":"https://git.kernel.org/stable/c/059e426d666a41e26b184c177c1ca3ee2d6fa1b6"},{"url":"https://git.kernel.org/stable/c/82f877ec9b041edc4c7c509c605cc3393d837bf0"},{"url":"https://git.kernel.org/stable/c/eb1ef44efac797b384d361a76e33f77027c29a14"},{"url":"https://git.kernel.org/stable/c/de78456976026102babe66258c228691ca5677c0"},{"url":"https://git.kernel.org/stable/c/58d1b717879bfeabe09b35e41ad667c79933eb2e"}],"title":"wifi: iwlwifi: pcie: Fix integer overflow in iwl_write_to_user_buf","x_generator":{"engine":"bippy-1.2.0"}}}}