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.
References
Configurations
Configuration 1 (hide)
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History
No history.
Information
Published : 2026-04-22 14:16
Updated : 2026-06-17 10:33
NVD link : CVE-2026-31501
Mitre link : CVE-2026-31501
CVE.ORG link : CVE-2026-31501
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-416
Use After Free
