CVE-2024-35884
A flaw in the Linux kernel allowed attackers to send specially crafted UDP packets that could be incorrectly aggregated when forwarded through tunnels, potentially corrupting data or crashing the system. The issue has been fixed in newer kernel releases, including Linux 6.9 and later. Users running older kernels, such as Debian 10.0, are affected.
An official fix is available, so this entry is kept for 30 days and then removed automatically.
Who is affected
Linux kernel versions up to 6.9, including Debian 10.0. System administrators and users of Linux servers, routers, and other networked devices that run these kernels.
Real-world impact
An attacker could send malicious UDP packets through a tunnel to trigger kernel crashes or data corruption, resulting in a denial‑of‑service condition on the affected system.
Why this severity
The CVSS score of 9.8 reflects that the vulnerability can be exploited remotely with no authentication or user interaction, and it compromises confidentiality, integrity, and availability of the system.
What to do about it
- 01Upgrade the Linux kernel to version 6.9 or later.
- 02Reboot the system to load the new kernel.
NVD-referenced vendor advisory indicating the issue has been resolved.
Timeline
- May 19, 2024 · May 19, 2024PublishedDisclosed and added to the National Vulnerability Database.
- Aug 4, 2026 · 2d agoAdvisory updatedThe NVD record was last revised.
- Aug 5, 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/3001e7aa43d6691db2…patch
- git.kernel.org/stable/c/3391b157780bbedf8e…patch
- git.kernel.org/stable/c/35fe0e0b5c00bef7dd…patch
- git.kernel.org/stable/c/3d010c8031e39f5fa1…patch
- git.kernel.org/stable/c/d12245080cb259d82b…patch
- git.kernel.org/stable/c/d49ae15a5767d4e9ef…patch
- lists.debian.org/debian-lts-announce/2024/06…third party advisory
- cert-portal.siemens.com/productcert/html/ssa-265688…