cilium ebpf LoadCollectionSpec/LoadCollectionSpecFromReader btf.go loadRawSpec integer overflow
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.
- GHSA-xhgw-qwwf-pg32
- GO-2026-6238
- openSUSE-SU-2026:11153-1
- openSUSE-SU-2026:11165-1
- openSUSE-SU-2026:11443-1
- openSUSE-SU-2026:21265-1
- openSUSE-SU-2026:21379-1
- openSUSE-SU-2026:21442-1
- openSUSE-SU-2026:21574-1
- openSUSE-SU-2026:21761-1
- openSUSE-SU-2026:21899-1
- SUSE-SU-2026:22946-1
- SUSE-SU-2026:22954-1
- SUSE-SU-2026:23234-1
- SUSE-SU-2026:23625-1
- SUSE-SU-2026:23853-1
- SUSE-SU-2026:23865-1
- SUSE-SU-2026:2824-1
- SUSE-SU-2026:4210-1
- Published
- Jun 3, 2026
- Updated
- Jul 22, 2026
- EPSS
- 0.2% · 7th percentile
- CWE
- CWE-189
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Report tools
Action score
7
Monitor
Low priority for now.
- CVSS
- 7 / 40 · 1.9 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CISA SSVC decision
- Exploitation
- proof of concept
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · VulDB
- 4.8
- NVD has not scored this yet; the score shown is the CNA’s.
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| cilium | ebpf | cpe:2.3:a:cilium:ebpf |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- cilium ebpfup to 0.21.0 inclusive
Versions reported by the vendor
Affected version ranges reported by the assigning authority (VulDB). Independent of NVD's CPE analysis and usually ahead of it.
cilium ebpf
- 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 0.10, 0.11, 0.12 … (+9)affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | golang-github-cilium-ebpf | all versions | — |
| Debian:14 | golang-github-cilium-ebpf | before 0.22.0+ds1-1 | 0.22.0+ds1-1 |
| Go | github.com/cilium/ebpf | before 0.22.0 | 0.22.0 |
| openSUSE:Leap 16.0 | alloy | before 1.18.0-160000.1.1 | 1.18.0-160000.1.1 |
| openSUSE:Leap 16.0 | alloy | before 1.17.1-160000.1.1 | 1.17.1-160000.1.1 |
| openSUSE:Leap 16.0 | amazon-ecs-init | before 1.106.0-160000.1.1 | 1.106.0-160000.1.1 |
| openSUSE:Leap 16.0 | cadvisor | before 0.60.3-bp160.1.1 | 0.60.3-bp160.1.1 |
| openSUSE:Leap 16.0 | ctop | before 0.7.7-bp160.2.1 | 0.7.7-bp160.2.1 |
| openSUSE:Leap 16.0 | govulncheck-vulndb | before 0.0.20260827T195228-160000.1.1 | 0.0.20260827T195228-160000.1.1 |
| openSUSE:Tumbleweed | alloy | before 1.17.1-1.1 | 1.17.1-1.1 |
| openSUSE:Tumbleweed | amazon-ecs-init | before 1.106.0-1.1 | 1.106.0-1.1 |
| openSUSE:Tumbleweed | cadvisor | before 0.60.3-1.1 | 0.60.3-1.1 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP7 | alloy | before 1.18.0-150700.15.26.1 | 1.18.0-150700.15.26.1 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP7 | alloy | before 1.17.1-150700.15.23.1 | 1.17.1-150700.15.23.1 |
| SUSE:Linux Enterprise Server 16.0 | alloy | before 1.17.1-160000.1.1 | 1.17.1-160000.1.1 |
| SUSE:Linux Enterprise Server 16.0 | alloy | before 1.18.0-160000.1.1 | 1.18.0-160000.1.1 |
| SUSE:Linux Enterprise Server 16.0 | amazon-ecs-init | before 1.106.0-160000.1.1 | 1.106.0-160000.1.1 |
| SUSE:Linux Enterprise Server 16.0 | govulncheck-vulndb | before 0.0.20260827T195228-160000.1.1 | 0.0.20260827T195228-160000.1.1 |
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:golang-github-cilium-ebpf | 0.22.0+ds1-1 · Debian:14 | Package registry (OSV) |
| Go:github.com/cilium/ebpf | 0.22.0 | Package registry (OSV) |
| opensuse:alloy | 1.17.1-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:amazon-ecs-init | 1.106.0-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:cadvisor | 0.60.3-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:ctop | 0.7.7-bp160.2.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:govulncheck-vulndb | 0.0.20260827T195228-160000.1.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| suse:alloy | 1.17.1-160000.1.1 · SUSE:Linux Enterprise Server 16.0 | Package registry (OSV) |
| suse:amazon-ecs-init | 1.106.0-160000.1.1 · SUSE:Linux Enterprise Server 16.0 | Package registry (OSV) |
| suse:govulncheck-vulndb | 0.0.20260827T195228-160000.1.1 · SUSE:Linux Enterprise Server 16.0 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- alifiras (VulDB User)reporter
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- Integrity
- Availability
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- X
Weakness class (CWE)
CWE-189 · Numeric ErrorsCVSS vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- github.com/cilium/ebpf/
- github.com/cilium/ebpf/commit/533dfc82fd228bfadf42ea7180c39de7d9af47fa
- github.com/cilium/ebpf/issues/2019
- github.com/cilium/ebpf/pull/2021
- vuldb.com/cve/CVE-2026-10722
- vuldb.com/submit/818291
- vuldb.com/vuln/368091
- vuldb.com/vuln/368091/cti
Vendor advisories and official records. Exploit/PoC links are deliberately left out.