CVE-2026-53233

netdev: fix double-free in netdev_nl_bind_rx_doit()

HIGH

7.8

CVSS Score

Published: June 25, 2026 at 08:39 AM UTC

Updated: July 7, 2026 at 11:59 PM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH7.8

Exploit prediction

EPSS 0.2%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

6.12 ≤ v < 6.12.946.12 ≤ v < 6.18.366.12 ≤ v < 7.0.136.12 ≤ v < 7.16.13 ≤ v < 6.18.366.19 ≤ v < 7.0.13170aafe35cb98e0f3fbacb446ea86389fbce22ea7.1 rc1 7.1 rc2 7.1 rc3 7.1 rc4 7.1 rc5 7.1 rc6 7.1 rc7

Vendor states this is fixed in 9b019376cbee10c4f9184d1745fa37d156e36f30 (fixed)

Vendor states this is fixed in c299321bc6232770ce378d6fa6bc46004d2d7fdb (fixed)

Vendor states this is fixed in c849de7d8757a7af801fc4a4058f71d481d367f2 (fixed)

Vendor states this is fixed in e055ca9205d3eb6aec3e5fe4ecc18abbbf18c599 (fixed)

Vendor states this is fixed in 6.12 (unaffected)

Vendor states this is fixed in 6.12.94 (unaffected)

Vendor states this is fixed in 6.18.36 (unaffected)

Vendor states this is fixed in 7.0.13 (unaffected)

Vendor states this is fixed in 7.1 (unaffected)