{"id":"CVE-2023-53589","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: mvm: don't trust firmware n_channels\n\nIf the firmware sends us a corrupted MCC response with\nn_channels much larger than the command response can be,\nwe …","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: mvm: don't trust firmware n_channels\n\nIf the firmware sends us a corrupted MCC response with\nn_channels much larger than the command response can be,\nwe …","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 4.1, < 5.4.244","linux_kernel >= 5.5, < 5.10.181","linux_kernel >= 5.11, < 5.15.113","linux_kernel >= 5.16, < 6.1.30","linux_kernel >= 6.2, < 6.3.4","linux_kernel = 6.4"],"patched":["linux_kernel 6.3.4"],"published":"2025-10-04","updated":"2026-10-15","sourceUpdated":"2026-10-15T22:17:43.560","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-53589","references":[{"url":"https://git.kernel.org/stable/c/05ad5a4d421ce65652fcb24d46b7e273130240d6","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/557ba100d8cf3661ff8d71c0b4a2cba8db555ec2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/682b6dc29d98e857e6ca4bbc077c7dc2899b7473","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c176f03350954b795322de0bfe1d7b514db41f45","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d0d39bed9e95f27a246be91c5929254ac043ed30","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e519a404a5bbba37693cb10fa61794a5fce4fd9b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00236,"epssPercentile":0.14572,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-15T21:35:44.946339Z"},"ingestedAt":"2026-10-15T22:48:25.410Z","slug":"CVE-2023-53589","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: mvm: don't trust firmware n_channels\n\nIf the firmware sends us a corrupted MCC response with\nn_channels much larger than the command response can be,\nwe might copy far too much (uninitialized) memory and\neven crash if the n_channels is large enough to make it\nrun out of the one page allocated for the FW response.\n\nFix that by checking the lengths. Doing a < comparison\nwould be sufficient, but the firmware should be doing\nit correctly, so check more strictly.\n\n## Affected\n\n- `linux_kernel >= 4.1, < 5.4.244`\n- `linux_kernel >= 5.5, < 5.10.181`\n- `linux_kernel >= 5.11, < 5.15.113`\n- `linux_kernel >= 5.16, < 6.1.30`\n- `linux_kernel >= 6.2, < 6.3.4`\n- `linux_kernel = 6.4`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.3.4`","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}