CVE-2026-98190
wifi: wilc1000: fix out-of-bounds read in P2P public action frames
No known exploitation. EPSS puts it in the 7th percentile. Fixed versions are out.
What to do
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- LinuxAffected: ≥ 4fb8b5aa2a1126783ae00bae544d6f3c519408ef, < e98ad9f4c59f2e836f8d971b57763a4277680422Upgrade to: e98ad9f4c59f2e836f8d971b57763a4277680422Affected: ≥ 4fb8b5aa2a1126783ae00bae544d6f3c519408ef, < f0c46f8111a479b97b8ab17747c528cade6257f1Upgrade to: f0c46f8111a479b97b8ab17747c528cade6257f1Affected: ≥ 4fb8b5aa2a1126783ae00bae544d6f3c519408ef, < a5b827dad8a3037cef04d0240d1c2acb1557101eUpgrade to: a5b827dad8a3037cef04d0240d1c2acb1557101eAffected: ≥ 4fb8b5aa2a1126783ae00bae544d6f3c519408ef, < 491df93b10d76aebaf6aa4bb05a6ba897f4fccfbUpgrade to: 491df93b10d76aebaf6aa4bb05a6ba897f4fccfb + 4 more branchesStated by: CVE record
Versions as the sources state them. Full version matrix after sign-in
What it is
From the CVE record
In the Linux kernel, the following vulnerability has been resolved: wifi: wilc1000: fix out-of-bounds read in P2P public action frames wilc_wfi_p2p_rx() and mgmt_tx() start parsing a frame once ieee80211_is_public_action() returns true. That helper only verifies the frame is long enough for the action category field, that is offsetofend(struct ieee80211_mgmt, u.action.category), 25 bytes. Both functions then read the P2P public action header up to oui_subtype at offset 30 and pass "size - ie_offset" to cfg80211_find_vendor_ie(), where ie_offset is offsetof(struct ieee80211_mgmt, u) + sizeof(*d), i.e. 32. A public action frame of 25 to 31 bytes passes the check but is shorter than that 32 byte header, so oui_subtype can be read out of bounds, and because the length is unsigned, "size - ie_offset" underflows to a value close to 4 GiB. cfg80211_find_vendor_ie() takes an unsigned int length, so even the size_t subtraction in mgmt_tx() is truncated to the same value. It then walks far past the buffer searching for a vendor element until it reaches unmapped memory. In the receive path the frame arrives over the air and needs no association, so a nearby unauthenticated device can crash the host while it is in P2P listen. Reject frames shorter than the P2P public action header in both paths before dereferencing it.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.2% chance of exploitation activity in the next 30 days, which ranks it in the 7th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
2 events over 0 days, from the signal feeds we watch.
- Publishedrecord updated
Affected products
Sources
References in the record
- git.kernel.org/stable/c/491df93b10d76aebaf6aa4bb05a6ba897f4fccfb
- git.kernel.org/stable/c/68b786691ce24c5c94e28811db243e573c50f9c1
- git.kernel.org/stable/c/6fbe76eb2796d2aee45cc6a2dd16e85d3cc96304
And 5 more references. See all after sign-in
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