← CVE Intelligence

CVE-2026-98887

wifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO hwsim_tx_info_frame_received_nl() casts the HWSIM_ATTR_TX_INFO payload to a struct hwsim_tx_rate * and unconditionally reads IEEE80211_TX_MAX_RATES entries (8 bytes) from it. The policy only bounds the attribute from above (NLA_BINARY .len is a maximum) and the op sets GENL_DONT_VALIDATE_STRICT, so a short or zero-length attribute is accepted and the loop reads past the payload. Require the exact length in the policy, so a malformed attribute is rejected before the handler runs.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 3a96bb65b4b820d8b41fa155781ec1c29e3479d4; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 59e1f2a0242232b4a3af144ae317d3913fc09046; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 1ae85bb34fe3510659b86d6a5f8036dd498233f8; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before b5b1234bbfa25537fb9a5c0d62c328ed4547f721; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 3dc723ac78a6e4fa0fd49e27e487ed319da40a9f; affected 0 before 5.10.271; affected 0 before 5.15.222; affected 0 before 6.1.189; affected 0 before 6.6.158; affected 0 before 6.12.111; affected 0 before 6.18.53
Linux / Linuxunaffected 5.10.271 through 5.10.*; unaffected 5.15.222 through 5.15.*; unaffected 6.1.189 through 6.1.*; unaffected 6.6.158 through 6.6.*; unaffected 6.12.111 through 6.12.*; unaffected 6.18.53 through 6.18.*; unaffected 7.2 through *

CWE

No CWE identifiers supplied.

References