CVE-2023-53107

A use-after-free vulnerability has been identified within the veth_convert_skb_to_xdp_buff() function of the Linux kernel's veth driver. The flaw stems from improper memory management during packet headroom expansion for XDP (eXpress Data Path). Specifically, when the pskb_expand_head() function allocates new memory via kmalloc to increase the packet headroom to meet the XDP_PACKET_HEADROOM requirement, a subsequent call to consume_skb() can prematurely free this memory while the AF_XDP subsystem is still actively processing the packet. This premature deallocation leads to a use-after-free condition. Successful exploitation of this vulnerability could result in memory corruption, denial of service, and overall system instability.

v

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.