CVE-2026-98407wifi: rsi: fix heap OOB write on key removal

Official description

In the Linux kernel, the following vulnerability has been resolved: wifi: rsi: fix heap OOB write on key removal When a key is removed (data == NULL), rsi_hal_load_key() runs: memset(&set_key[FRAME_DESC_SZ], 0, frame_len - FRAME_DESC_SZ); set_key is a struct rsi_set_key *, so the subscript is scaled by sizeof(struct rsi_set_key) (160 bytes): &set_key[FRAME_DESC_SZ] is skb->data + 2560, and the memset writes 144 zero bytes starting 2.4KB past the end of the 160-byte skb data buffer, corrupting unrelated heap objects. The intended byte offset would have been (u8 *)set_key + FRAME_DESC_SZ. The write fires on every DISABLE_KEY callback, so plain disconnects, roams and interface teardowns trigger it on real networks. The memset is redundant: the whole buffer is zeroed right after allocation, so the frame sent to the device is byte-identical without it. Drop the else branch; normal operation is unaffected. Discovered by Atuin - Automated Vulnerability Discovery Engine.

Affected packages & fixed versions

Affected products (as reported)

References

• https://git.kernel.org/stable/c/b79e2f6585c014c42384f4caa7a37b3e5d26179c
• https://git.kernel.org/stable/c/c67fb3b875a83f9ba92afea4036c7b541f77512a
• https://git.kernel.org/stable/c/62d40db89180cfab7a917395f9ffc1dac62b0019
• https://git.kernel.org/stable/c/00bea3589255603c38766cac4a4d6d36493b2556
• https://git.kernel.org/stable/c/ac599cf8edf8aa2dae546f04d3f1849e32c2e738
• https://git.kernel.org/stable/c/f4f2852b664c3ff1436785cd11258a0ce25b74b3
• https://git.kernel.org/stable/c/8dab6ee020b2cd951b670626ba44a95cd4deac3d
• https://git.kernel.org/stable/c/e6c5ed7a98d7bc8b0f7918246f1c90ddb3f79dfa