Linux CVE-2026-64223

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CVE ID: CVE-2026-64223 Description: In the Linux kernel, wifi: mac80211: consume only present negotiated TTLM maps. It's an out-of-bounds read due to parsing error in negotiated TTLM elements. The vulnerability is in mac80211 (Linux kernel wireless subsystem). Specifically, ieee80211_parse_neg_ttlm() advances cursor for every TID, even if presence bit is clear, leading to reading past validated element for later present TIDs. The bad bytes land in neg_ttlm->{up,down}link[tid] but gated by valid_links, so a peer cannot turn it into policy change. Under KUnit + KASAN, OOB read reported as slab-out-of-bounds. In production, depends on allocator state. So from the description: It's an out-of-bounds read. Affected product: Linux kernel (specifically mac80211 subcomponent). CVSS score 8.1, vector AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H -> Adjacent network (WiFi range?), low complexity, no privileges, no user interaction, scope unchanged, high confidentiality and availability impact, no integrity. So it's a read and potentially crash/A impact. EPSS: 0.17% (6th percentile) very low. Patch: Available from vendor (Linux). CPE strings: cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:* (generic), no version specified in CPE, but EUVD provides affected versions: Linux commits from 8f500fbc6c... up to various fix commits. EUVD versions: Linux 8f500fbc6c... < a6e6ccd5bd... (6.12.92?), etc. Patches: "Linux patch: 6.18.34", "6.12.92", 0, 7.1, 7.0.11? Those look odd: maybe patch versions for stable trees. Anyway, the vulnerability is in mac80211, which is part of the Linux kernel. The affected versions likely include kernels where this commit 8f500fbc... (introduced) until fix commit a6e6ccd5bd..., which appears in various stable trees. I need to synthesize. Product_name: "Linux Kernel" (1-3 words). Actually the specific product is "mac80211" which is part of the Linux kernel's wireless stack. So "Linux Kernel mac80