{"id":"CVE-2025-23133","title":"wifi: ath11k: update channel list in reg notifier instead reg worker","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath11k: update channel list in reg notifier instead reg worker\n\nCurrently when ath11k gets a new channel list, it will be processed\naccording to the following ste…","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","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= f45cb6b29cd36514e13f7519770873d8c0457008 < ec97bd5378c594be1f1c7a15dcf381e075b665d9","Linux >= f45cb6b29cd36514e13f7519770873d8c0457008 < 26618c039b78a76c373d4e02c5fbd52e3a73aead","Linux >= f45cb6b29cd36514e13f7519770873d8c0457008 < f952fb83c9c6f908d27500764c4aee1df04b9d3f","Linux >= f45cb6b29cd36514e13f7519770873d8c0457008 < 933ab187e679e6fbdeea1835ae39efcc59c022d2","Linux f96fd36936310cefe0ea1370a9ae30e6746e6f62","Linux c97b120950b49d76bdce013bd4d9577d769465f4","Linux >= 5.15.79 < 5.16","Linux >= 6.0.9 < 6.1","Linux 6.1"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-15T21:44:40.826018Z"},"published":"2025-04-16","updated":"2026-10-21","sourceUpdated":"2026-10-21T12:36:20.439Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-23133","references":[{"url":"https://git.kernel.org/stable/c/ec97bd5378c594be1f1c7a15dcf381e075b665d9"},{"url":"https://git.kernel.org/stable/c/26618c039b78a76c373d4e02c5fbd52e3a73aead"},{"url":"https://git.kernel.org/stable/c/f952fb83c9c6f908d27500764c4aee1df04b9d3f"},{"url":"https://git.kernel.org/stable/c/933ab187e679e6fbdeea1835ae39efcc59c022d2"}],"tags":["cve.org"],"epss":0.00307,"epssPercentile":0.23329,"ingestedAt":"2026-10-15T22:48:25.475Z","slug":"CVE-2025-23133","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath11k: update channel list in reg notifier instead reg worker\n\nCurrently when ath11k gets a new channel list, it will be processed\naccording to the following steps:\n1. update new channel list to cfg80211 and queue reg_work.\n2. cfg80211 handles new channel list during reg_work.\n3. update cfg80211's handled channel list to firmware by\nath11k_reg_update_chan_list().\n\nBut ath11k will immediately execute step 3 after reg_work is just\nqueued. Since step 2 is asynchronous, cfg80211 may not have completed\nhandling the new channel list, which may leading to an out-of-bounds\nwrite error:\nBUG: KASAN: slab-out-of-bounds in ath11k_reg_update_chan_list\nCall Trace:\n    ath11k_reg_update_chan_list+0xbfe/0xfe0 [ath11k]\n    kfree+0x109/0x3a0\n    ath11k_regd_update+0x1cf/0x350 [ath11k]\n    ath11k_regd_update_work+0x14/0x20 [ath11k]\n    process_one_work+0xe35/0x14c0\n\nShould ensure step 2 is completely done before executing step 3. Thus\nWen raised patch[1]. When flag NL80211_REGDOM_SET_BY_DRIVER is set,\ncfg80211 will notify ath11k after step 2 is done.\n\nSo enable the flag NL80211_REGDOM_SET_BY_DRIVER then cfg80211 will\nnotify ath11k after step 2 is done. At this time, there will be no\nKASAN bug during the execution of the step 3.\n\n[1] https://patchwork.kernel.org/project/linux-wireless/patch/20230201065313.27203-1-quic_wgong@quicinc.com/\n\nTested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3\n\n## Affected\n\n- `Linux >= f45cb6b29cd36514e13f7519770873d8c0457008 < ec97bd5378c594be1f1c7a15dcf381e075b665d9`\n- `Linux >= f45cb6b29cd36514e13f7519770873d8c0457008 < 26618c039b78a76c373d4e02c5fbd52e3a73aead`\n- `Linux >= f45cb6b29cd36514e13f7519770873d8c0457008 < f952fb83c9c6f908d27500764c4aee1df04b9d3f`\n- `Linux >= f45cb6b29cd36514e13f7519770873d8c0457008 < 933ab187e679e6fbdeea1835ae39efcc59c022d2`\n- `Linux f96fd36936310cefe0ea1370a9ae30e6746e6f62`\n- `Linux c97b120950b49d76bdce013bd4d9577d769465f4`\n- `Linux >= 5.15.79 < 5.16`\n- `Linux >= 6.0.9 < 6.1`\n- `Linux 6.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}