CVE-2024-53206
This vulnerability is a use‑after‑free bug in the Linux kernel’s TCP stack that can allow an attacker to crash the kernel or potentially execute arbitrary code. The issue has been fixed by updating the kernel to a version that includes the patch.
An official fix is available, so this entry is kept for 30 days and then removed automatically.
Who is affected
Linux kernel (all versions before the patch). Typical users are Linux system administrators, servers, and embedded devices running affected kernel versions.
Real-world impact
An attacker could crash the system or gain code execution, leading to denial of service or compromise of the affected machine.
Why this severity
The CVSS score of 9.8 reflects that the vulnerability is exploitable remotely with no authentication, no user interaction, and can compromise confidentiality, integrity, and availability.
What to do about it
- 01Update the Linux kernel to a version that includes the patch that replaces inet_csk_reqsk_queue_drop_and_put() with __inet_csk_reqsk_queue_drop() and reqsk_put() in reqsk_timer_handler().
- 02Reboot the system to load the updated kernel.
NVD description indicates the vulnerability has been resolved.
Timeline
- Dec 27, 2024 · Dec 27, 2024PublishedDisclosed and added to the National Vulnerability Database.
- Aug 4, 2026 · 2d agoAdvisory updatedThe NVD record was last revised.
- Aug 4, 2026 · 1d agoOfficial fix availableA vendor patch or mitigation now exists — see the remediation steps above.
How it’s attacked
References & advisories
- git.kernel.org/stable/c/2dcc86fefe09ac8531…patch
- git.kernel.org/stable/c/65ed89cad1f57034c2…patch
- git.kernel.org/stable/c/6d845028609a4af0ad…patch
- git.kernel.org/stable/c/9a3c1ad93e6fba67b3…patch
- git.kernel.org/stable/c/c31e72d021db2714df…patch
- git.kernel.org/stable/c/d0eb14cb8c08b00c36…patch
- lists.debian.org/debian-lts-announce/2025/03…