CVE-2026-98190: Linux kernel · wifi: wilc1000: fix out-of-bounds read in P2P public action frames
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 28 Oct 2026, 01:27 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Exploitation evidence
Disclosed: evidence found.
CVE published 6 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
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.
References
- ubuntu.com/security/CVE-2026-98190 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-98190 (opens in a new tab)
- git.kernel.org/linus/ba6cb7c0868a412c2eb68e8efd5aa38bfb258a14 (opens in a new tab)
- git.kernel.org/stable/c/491df93b10d76aebaf6aa4bb05a6ba897f4fccfb (opens in a new tab)
- git.kernel.org/stable/c/68b786691ce24c5c94e28811db243e573c50f9c1 (opens in a new tab)
- git.kernel.org/stable/c/6fbe76eb2796d2aee45cc6a2dd16e85d3cc96304 (opens in a new tab)
- git.kernel.org/stable/c/a5b827dad8a3037cef04d0240d1c2acb1557101e (opens in a new tab)
- git.kernel.org/stable/c/ba6cb7c0868a412c2eb68e8efd5aa38bfb258a14 (opens in a new tab)
- git.kernel.org/stable/c/cc2ee642ebeac8699b671ddb6d5955a785e5ff43 (opens in a new tab)
- git.kernel.org/stable/c/e98ad9f4c59f2e836f8d971b57763a4277680422 (opens in a new tab)
- git.kernel.org/stable/c/f0c46f8111a479b97b8ab17747c528cade6257f1 (opens in a new tab)