Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: net: ti: icssg-prueth: fix use-after-free of CPPI descriptor in RX path cppi5_hdesc_get_psdata() returns a pointer into the CPPI descriptor. In both emac_rx_packet() and emac_rx_packet_zc(), the descriptor is freed via k3_cppi_desc_pool_free() before the psdata pointer is used by emac_rx_timestamp(), which dereferences psdata[0] and psdata[1]. This constitutes a use-after-free on every received packet that goes through the timestamp path. Defer the descriptor free until after all accesses through the psdata pointer are complete. For emac_rx_packet(), move the free into the requeue label so both early-exit and success paths free the descriptor after all accesses are done. For emac_rx_packet_zc(), move the free to the end of the loop body after emac_dispatch_skb_zc() (which calls emac_rx_timestamp()) has returned.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 46eeb90f03e03d5e8f7f9f1f0eb0792104fc5f86 before c516c2e06fe580b8d38de60cd407072a5de81506; affected 46eeb90f03e03d5e8f7f9f1f0eb0792104fc5f86 before d5827316debcb677679bb014885d7be92c410e11; affected 46eeb90f03e03d5e8f7f9f1f0eb0792104fc5f86 before eb8c426c9803beb171f89d15fea17505eb517714 |
| Linux / Linux | affected 6.15; unaffected 0 before 6.15; unaffected 6.18.57 through 6.18.*; unaffected 6.19.11 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.