CVE-2026-68411
CVE CVE-2026-68411EUVD EUVD-2026-55597Published 2026-08-10T12:04:31.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211_hwsim: clamp virtio RX length before skb_put hwsim_virtio_rx_work() passes the virtqueue used-ring length reported by the device straight to skb_put() on a fixed-size receive skb. A backend reporting a length larger than the skb tailroom drives skb_put() past the buffer end and hits skb_over_panic() -- a host-triggerable guest panic (denial of service). Clamp the length to the skb's available room before skb_put(). A conforming device never reports more than the posted buffer size, so valid frames are unaffected; a truncated over-report then fails the length/header checks in hwsim_virtio_handle_cmd() and is dropped, so truncating rather than dropping here cannot be turned into a parsing problem.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 6.12.101; 5d44fe7c9808c56e136e59147bd932f5491520f1 <fade308845c89f784da8a6780c1e77258488f1b6; patch: 6.18.42; patch: 0; 5d44fe7c9808c56e136e59147bd932f5491520f1 <99dc05c75acc3c8cde8d89c5371f4b569de5ac62; 5.7; patch: 7.1.6; 5d44fe7c9808c56e136e59147bd932f5491520f1 <82c5a30a66e2a7337d99476c67d6fc1a99c4250e; patch: 6.6.148; patch: 7.2-rc4; 5d44fe7c9808c56e136e59147bd932f5491520f1 <6dc76371a9a360c29de00df5b11563102d9d675a; 5d44fe7c9808c56e136e59147bd932f5491520f1 <10a2b430f8f06ae14b9590b6f6faa6b588ef0654
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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