CVE-2026-10722 cilium ebpf LoadCollectionSpec/LoadCollectionSpecFromReader btf.go loadRawSpec integer overflow
A local attacker can trigger an integer overflow in the Cilium eBPF library's BTF loading function, potentially causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-10722?
CVE-2026-10722 is a medium-severity vulnerability in cilium ebpf, published on 3 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability has been found in cilium ebpf up to 0.21.0. This affects the function loadRawSpec of the file btf/btf.go of the component LoadCollectionSpec/LoadCollectionSpecFromReader. Such manipulation of the argument offset leads to integer overflow. The attack can only be performed from a local environment. The exploit has been disclosed to the public and may be used. The name of the patch is 533dfc82fd228bfadf42ea7180c39de7d9af47fa. A patch should be applied to remediate this issue.
Which versions are affected by CVE-2026-10722?
3 open source packages ship an affected version, including github.com/cilium/ebpf. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/cilium/ebpf Go | All versions | 0.22.0 |
github.com/cilium/ebpf Go | All versions | 0.22.0 |
github.com/cilium/ebpf Go | All versions | 0.22.0 |
Linux distribution packages (10)
alloy SUSE:Linux Enterprise Server 16.0 | All versions | 1.17.1-160000.1.1 |
alloy SUSE:Linux Enterprise Server 16.0 | All versions | 1.17.1-160000.1.1 |
amazon-ecs-init SUSE:Linux Enterprise Server 16.0 | All versions | 1.106.0-160000.1.1 |
alloy SUSE:Linux Enterprise Server for SAP applications 16.0 | All versions | 1.17.1-160000.1.1 |
alloy SUSE:Linux Enterprise Server for SAP applications 16.0 | All versions | 1.17.1-160000.1.1 |
amazon-ecs-init SUSE:Linux Enterprise Server for SAP applications 16.0 | All versions | 1.106.0-160000.1.1 |
alloy openSUSE:Leap 16.0 | All versions | 1.17.1-160000.1.1 |
amazon-ecs-init openSUSE:Leap 16.0 | All versions | 1.106.0-160000.1.1 |
alloy openSUSE:Tumbleweed | All versions | 1.17.1-1.1 |
amazon-ecs-init openSUSE:Tumbleweed | All versions | 1.106.0-1.1 |
Products include Cilium Ebpf.
How do I fix CVE-2026-10722?
Upgrade github.com/cilium/ebpf to 0.22.0 or later.
Is CVE-2026-10722 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-10722 exists.
Sources
Also known as AZL-89390, AZL-89393, CLEANSTART-2026-CI21288, CLEANSTART-2026-KZ38920, CLEANSTART-2026-LX85041, DEBIAN-CVE-2026-10722 and 109 more.