{"id":"CVE-2023-52832","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-52832","generatedAt":"2026-10-28T01:10:04.271Z","title":"In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: don't return unset power in ieee80211_get_tx_power() We can get a UBSAN warning if ieee80211_get_tx_power() returns the INT_MIN value mac80211 internally uses for \"unset…","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: don't return unset power in ieee80211_get_tx_power()\n\nWe can get a UBSAN warning if ieee80211_get_tx_power() returns the\nINT_MIN value mac80211 internally uses for \"unset power level\".\n\n UBSAN: signed-integer-overflow in net/wireless/nl80211.c:3816:5\n -2147483648 * 100 cannot be represented in type 'int'\n CPU: 0 PID: 20433 Comm: insmod Tainted: G        WC OE\n Call Trace:\n  dump_stack+0x74/0x92\n  ubsan_epilogue+0x9/0x50\n  handle_overflow+0x8d/0xd0\n  __ubsan_handle_mul_overflow+0xe/0x10\n  nl80211_send_iface+0x688/0x6b0 [cfg80211]\n  [...]\n  cfg80211_register_wdev+0x78/0xb0 [cfg80211]\n  cfg80211_netdev_notifier_call+0x200/0x620 [cfg80211]\n  [...]\n  ieee80211_if_add+0x60e/0x8f0 [mac80211]\n  ieee80211_register_hw+0xda5/0x1170 [mac80211]\n\nIn this case, simply return an error instead, to indicate\nthat no data is available.","published":"2024-05-21T16:15:21.000Z","lastModified":"2026-06-17T06:43:41.000Z","status":"Modified","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":{"version":"3.1","score":9.1,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"},"cwe":["CWE-920"],"affected":["linux/linux kernel"],"epss":{"score":0.01263,"percentile":0.69472,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/21a0f310a9f3bfd2b4cf4f382430e638607db846","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2be24c47ac19bf639c48c082486c08888bd603c6","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5a94cffe90e20e8fade0b9abd4370bd671fe87c7","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/717de20abdcd1d4993fa450e28b8086a352620ea","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/adc2474d823fe81d8da759207f4f1d3691aa775a","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e160ab85166e77347d0cbe5149045cb25e83937f","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1571120c44dbe5757aee1612c5b6097cdc42710f","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/21a0f310a9f3bfd2b4cf4f382430e638607db846","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/298e767362cade639b7121ecb3cc5345b6529f62","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/2be24c47ac19bf639c48c082486c08888bd603c6","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/5a94cffe90e20e8fade0b9abd4370bd671fe87c7","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/717de20abdcd1d4993fa450e28b8086a352620ea","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/adc2474d823fe81d8da759207f4f1d3691aa775a","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/e160ab85166e77347d0cbe5149045cb25e83937f","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/efeae5f4972f75d50002bc50eb112ab9e7069b18","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-52832","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}