Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: capture fast-RX rate before mesh reuses skb->cb ieee80211_invoke_fast_rx() reads RX status through IEEE80211_SKB_RXCB(skb), which aliases the same skb->cb storage that ieee80211_rx_mesh_data() reuses as IEEE80211_TX_INFO. In the unicast forward path, mesh_data does: info = IEEE80211_SKB_CB(fwd_skb); memset(info, 0, sizeof(*info)); on the same skb the caller still names via rx->skb, then either queues the skb for TX (success) or kfree_skb()'s it (no-route) before returning RX_QUEUED. The caller's RX_QUEUED arm then calls sta_stats_encode_rate(status) on memory that is either zeroed (success path) or freed (no-route path). The latter is KASAN slab-use-after-free in ieee80211_prepare_and_rx_handle. Fix by encoding the rate from status before invoking ieee80211_rx_mesh_data(), so the RX_QUEUED arm consumes a value captured while status was still backed by valid memory.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
AVAILABLE
Momentum
STABLE
If you run products in this scope, you should treat this CVE as relevant to your environment.
1 version affected across 1 product
| Date | Total | Labels |
|---|
| 2026-07-21 | 1 | Patch1 |
| 2026-08-19 | 1 | Disclosure1 |
🔴 #Linux Kernel (mac80211), Use-After-Free (UAF), #CVE-2026-64117 (High) -DC-Aug2026-1581 https://dailycve.com/linux-kernel-mac80211-use-after-free-uaf-cve-2026-64117-high-dc-aug2026-1581/
Post summary
The tweet announces a high‑severity use‑after‑free bug in the Linux kernel’s mac80211 subsystem (CVE‑2026‑64117) but provides no PoC, exploit, patch, or evidence of active exploitation.
📡 CVE-2026-64117 isn’t a Wi‑Fi apocalypse, but stale packet memory in Linux’s privileged mesh stack is still a terrible networking feature. Patch your kernels—because “it only happens sometimes” isn’t security. https://windowsforum.com/threads/cve-2026-64117-fix-update-linux-wi-fi-mesh-kernels.439795/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #Wsl #LinuxKernel #Cve202664117 #WiFiSecur… https://t.co/CxsntbWS14
Post summary
The post stresses updating Linux kernels to mitigate CVE‑2026‑64117’s issue with stale packet memory in the privileged mesh stack, but offers no PoC, exploit, or evidence of active attacks.
5 of 5 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| OS | linux | linux_kernel | - | - | - |
| OS | linux | linux_kernel | 7.1 | - | - |
| OS | linux | linux_kernel | 7.1 | - | - |
| OS | linux | linux_kernel | 7.1 | - | - |
| OS | linux | linux_kernel | 7.1 | - | - |