368 lines
18 KiB
JSON
368 lines
18 KiB
JSON
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"cveId": "CVE-2026-23185",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-01-13T15:37:45.984Z",
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"datePublished": "2026-02-14T16:27:14.815Z",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: iwlwifi: mld: cancel mlo_scan_start_wk\n\nmlo_scan_start_wk is not canceled on disconnection. In fact, it is not\ncanceled anywhere except in the restart cleanup, where we don't really\nhave to.\n\nThis can cause an init-after-queue issue: if, for example, the work was\nqueued and then drv_change_interface got executed.\n\nThis can also cause use-after-free: if the work is executed after the\nvif is freed."
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"value": "AV:L - The vulnerability requires local access to manage WiFi interfaces — freeing the vif (via interface removal or drv_change_interface) needs CAP_NET_ADMIN operations that an adjacent WiFi attacker cannot trigger remotely.\nAC:L - A local attacker controls both sides: they can trigger MLO link activation (scheduling the 5-second delayed work) and then immediately change/remove the interface before the work fires. The 5-second window is generous and fully attacker-controlled.\nPR:L - WiFi connection management is available to unprivileged users through NetworkManager, and various automatic interface management paths (driver restart, hardware events) could trigger the vif free without explicit root action.\nUI:N - No user interaction is required — the attacker can trigger the entire sequence (WiFi connection, link activation, disconnection, interface change) programmatically.\nS:U - The vulnerability and its impact are both within the kernel's WiFi driver subsystem — no security boundary is crossed.\nC:H - The use-after-free allows reading freed memory that may be reallocated with sensitive data, providing arbitrary kernel memory read primitives through heap spraying techniques.\nI:H - The use-after-free enables heap spraying to control the freed mld_vif object, providing write primitives and potential control flow hijacking for arbitrary code execution in kernel context.\nA:H - The use-after-free will cause a kernel crash (oops/panic) when the delayed work accesses the freed mld_vif structure through container_of."
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