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CVE-2026-98190

wifi: wilc1000: fix out-of-bounds read in P2P public action frames

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, and 2 more
None on Exploit-DB, Metasploit or GitHub

Summary

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.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From 4fb8b5aa2a1126783ae00bae544d6f3c519408ef · fixed in e98ad9f4c59f2e836f8d971b57763a4277680422; From 4fb8b5aa2a1126783ae00bae544d6f3c519408ef · fixed in f0c46f8111a479b97b8ab17747c528cade6257f1; From 4fb8b5aa2a1126783ae00bae544d6f3c519408ef · fixed in a5b827dad8a3037cef04d0240d1c2acb1557101e; From 4fb8b5aa2a1126783ae00bae544d6f3c519408ef · fixed in 491df93b10d76aebaf6aa4bb05a6ba897f4fccfb; From 4fb8b5aa2a1126783ae00bae544d6f3c519408ef · fixed in cc2ee642ebeac8699b671ddb6d5955a785e5ff43; From 4fb8b5aa2a1126783ae00bae544d6f3c519408ef · fixed in 68b786691ce24c5c94e28811db243e573c50f9c1; From 4fb8b5aa2a1126783ae00bae544d6f3c519408ef · fixed in 6fbe76eb2796d2aee45cc6a2dd16e85d3cc96304; From 4fb8b5aa2a1126783ae00bae544d6f3c519408ef · fixed in ba6cb7c0868a412c2eb68e8efd5aa38bfb258a14

  • Linux Linux

    5.7

  • KernelLinux

    From 5.7.0 · fixed in 5.10.271; From 5.11.0 · fixed in 5.15.222; From 5.16.0 · fixed in 6.1.189; From 6.2.0 · fixed in 6.6.158; From 6.7.0 · fixed in 6.12.112; From 6.13.0 · fixed in 6.18.54; From 6.19.0 · fixed in 7.2.8

References 8

git.kernel.org