CVE-2026-64571

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> wifi: p54: validate RX frame length in p54_rx_eeprom_readback()<br /> <br /> p54_rx_eeprom_readback() copies the requested EEPROM slice out of a<br /> device-supplied readback frame without checking that the skb actually holds<br /> that many bytes. Commit da1b9a55ff11 ("wifi: p54: prevent buffer-overflow in<br /> p54_rx_eeprom_readback()") closed the destination overflow by copying a<br /> fixed priv-&gt;eeprom_slice_size (and rejecting a mismatched advertised len),<br /> but the source side is still unbounded: nothing verifies the frame is long<br /> enough to supply that many bytes.<br /> <br /> A malicious USB device can send a short frame whose advertised len matches<br /> priv-&gt;eeprom_slice_size while the payload is truncated. The equality check<br /> passes and memcpy() reads past the end of the skb, leaking adjacent heap:<br /> <br /> BUG: KASAN: slab-out-of-bounds in p54_rx (drivers/net/wireless/intersil/p54/txrx.c:507)<br /> Read of size 1016 at addr ffff88800f077114 by task swapper/0/0<br /> Call Trace:<br /> <br /> ...<br /> __asan_memcpy (mm/kasan/shadow.c:105)<br /> p54_rx (drivers/net/wireless/intersil/p54/txrx.c:507)<br /> p54u_rx_cb (drivers/net/wireless/intersil/p54/p54usb.c:163)<br /> __usb_hcd_giveback_urb (drivers/usb/core/hcd.c:1657)<br /> dummy_timer (drivers/usb/gadget/udc/dummy_hcd.c:2005)<br /> ...<br /> <br /> <br /> The buggy address belongs to the object at ffff88800f0770c0<br /> which belongs to the cache skbuff_small_head of size 704<br /> The buggy address is located 84 bytes inside of<br /> allocated 704-byte region [ffff88800f0770c0, ffff88800f077380)<br /> <br /> Check that the slice fits in the skb before copying.