In the Linux kernel, the following vulnerability has been resolved: netdev: fix double-free in netdev_nl_bind_rx_doit() Sashiko flags that genlmsg_reply() always consumes the skb. The error path calls nlmsg_free(rsp) so we can't jump directly to it. Let's not unbind, just propagate the error to the user. This is the typical way of handling genlmsg_reply() failures. They shouldn't happen unless user does something silly like calling the kernel with an already-full rcvbuf.

A flaw was found in the Linux kernel. A double-free vulnerability exists within the `netdev_nl_bind_rx_doit()` function, which is responsible for binding network device receive operations. This vulnerability arises when `genlmsg_reply()` consumes the socket buffer (`skb`), and the error handling path subsequently attempts to free the response (`rsp`) again, resulting in a double-free. This could allow a local attacker to cause a denial of service (DoS) or potentially execute arbitrary code.

Red Hat Enterprise Linux 10 Affected kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Not affected kernel Red Hat Enterprise Linux 9 Not affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-53233 https://nvd.nist.gov/vuln/detail/CVE-2026-53233 https://lore.kernel.org/linux-cve-announce/2026062509-CVE-2026-53233-508b@gregkh/T