CVE-2026-68476 ipvs: reload ip header after head reallocation
A use-after-free vulnerability in the Linux kernel IPVS module allows attackers to execute arbitrary code or cause a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-68476?
CVE-2026-68476 is a critical use after free vulnerability in Linux, published on 15 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
ipvs: reload ip header after head reallocation
__ip_vs_get_out_rt() calls skb_ensure_writable() which may reallocate skb->head.
Which versions are affected by CVE-2026-68476?
How do I fix CVE-2026-68476?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-68476 being exploited?
There is no known exploitation of CVE-2026-68476 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-68476, DEBIAN-CVE-2026-68476, GHSA-3fqj-wv67-hq22, UBUNTU-CVE-2026-68476.