CVE-2026-53233 Details
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.
A double-free vulnerability has been identified in the Linux kernel's netdev_nl_bind_rx_doit function. This issue arises because genlmsg_reply function always consumes the socket buffer (skb), and the error handling path calls nlmsg_free(rsp), preventing a direct jump to the error cleanup. Instead of unbinding, the error should be propagated to the user, which is the standard approach for handling genlmsg_reply failures. Such failures typically occur only if the user mistakenly calls the kernel with an already full receive buffer.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been patched. Instructions for downloading the updated kernel can be found on the official Linux kernel website.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/9b019376cbee10c4f9184d1745fa37d156e36f30 | kernel.org | Patch |
| https://git.kernel.org/stable/c/c299321bc6232770ce378d6fa6bc46004d2d7fdb | kernel.org | Patch |
| https://git.kernel.org/stable/c/c849de7d8757a7af801fc4a4058f71d481d367f2 | kernel.org | Patch |
| https://git.kernel.org/stable/c/e055ca9205d3eb6aec3e5fe4ecc18abbbf18c599 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-415 | Double Free | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.12, < 6.12.94 >= 6.13, < 6.18.36 >= 6.19, < 7.0.13 7.1 rc1 7.1 rc2 7.1 rc3 7.1 rc4 7.1 rc5 7.1 rc6 7.1 rc7 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 7, 2026 | Initial Analysis | [email protected] |
| Jun 25, 2026 | New CVE Received | kernel.org |