{"id":"CVE-2026-53258","title":"wifi: fix leak if split 6 GHz scanning fails","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: fix leak if split 6 GHz scanning fails\n\nrdev->int_scan_req is leaked if cfg80211_scan() fails.  Note that it's\nsupposed to be released at ___cfg80211_scan_done() …","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= c8cb5b854b40f2ce52ccd032fa19750f4181d5fc < 87484866cae9130b97c2b356eeaea4f47b292f75","Linux >= c8cb5b854b40f2ce52ccd032fa19750f4181d5fc < df44397bbd8f3a38115c9590b686787e4aaf6327","Linux >= c8cb5b854b40f2ce52ccd032fa19750f4181d5fc < fb8db813eba2e56ee001c9fb5c2ce2cb78c42642","Linux >= c8cb5b854b40f2ce52ccd032fa19750f4181d5fc < a24134ddc18b4d440714365637d440b7121447b9","Linux >= c8cb5b854b40f2ce52ccd032fa19750f4181d5fc < e8694f7cc29287e843648d1075177b9a2000d957","Linux 5.10"],"published":"2026-06-25","updated":"2026-10-21","sourceUpdated":"2026-10-21T12:42:19.486Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-53258","references":[{"url":"https://git.kernel.org/stable/c/87484866cae9130b97c2b356eeaea4f47b292f75"},{"url":"https://git.kernel.org/stable/c/df44397bbd8f3a38115c9590b686787e4aaf6327"},{"url":"https://git.kernel.org/stable/c/fb8db813eba2e56ee001c9fb5c2ce2cb78c42642"},{"url":"https://git.kernel.org/stable/c/a24134ddc18b4d440714365637d440b7121447b9"},{"url":"https://git.kernel.org/stable/c/e8694f7cc29287e843648d1075177b9a2000d957"}],"tags":["cve.org"],"epss":0.00112,"epssPercentile":0.01321,"ingestedAt":"2026-10-21T12:48:53.618Z","slug":"CVE-2026-53258","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: fix leak if split 6 GHz scanning fails\n\nrdev->int_scan_req is leaked if cfg80211_scan() fails.  Note that it's\nsupposed to be released at ___cfg80211_scan_done() but this doesn't happen\nas rdev->scan_req is NULL at that point, too, leading to the early return\nfrom the freeing function.\n\nunreferenced object 0xffff8881161d0800 (size 512):\n  comm \"wpa_supplicant\", pid 379, jiffies 4294749765\n  hex dump (first 32 bytes):\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 f0 81 13 16 81 88 ff ff  ................\n  backtrace (crc c867fdb6):\n    kmemleak_alloc+0x89/0x90\n    __kmalloc_noprof+0x2fd/0x410\n    cfg80211_scan+0x133/0x730\n    nl80211_trigger_scan+0xc69/0x1cc0\n    genl_family_rcv_msg_doit+0x204/0x2f0\n    genl_rcv_msg+0x431/0x6b0\n    netlink_rcv_skb+0x143/0x3f0\n    genl_rcv+0x27/0x40\n    netlink_unicast+0x4f6/0x820\n    netlink_sendmsg+0x797/0xce0\n    __sock_sendmsg+0xc4/0x160\n    ____sys_sendmsg+0x5e4/0x890\n    ___sys_sendmsg+0xf8/0x180\n    __sys_sendmsg+0x136/0x1e0\n    __x64_sys_sendmsg+0x76/0xc0\n    x64_sys_call+0x13f0/0x17d0\n\nFound by Linux Verification Center (linuxtesting.org).\n\n## Affected\n\n- `Linux >= c8cb5b854b40f2ce52ccd032fa19750f4181d5fc < 87484866cae9130b97c2b356eeaea4f47b292f75`\n- `Linux >= c8cb5b854b40f2ce52ccd032fa19750f4181d5fc < df44397bbd8f3a38115c9590b686787e4aaf6327`\n- `Linux >= c8cb5b854b40f2ce52ccd032fa19750f4181d5fc < fb8db813eba2e56ee001c9fb5c2ce2cb78c42642`\n- `Linux >= c8cb5b854b40f2ce52ccd032fa19750f4181d5fc < a24134ddc18b4d440714365637d440b7121447b9`\n- `Linux >= c8cb5b854b40f2ce52ccd032fa19750f4181d5fc < e8694f7cc29287e843648d1075177b9a2000d957`\n- `Linux 5.10`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}