Infinite loop in EDK II Network Package
EDK2's Network Package is susceptible to an infinite loop vulnerability when parsing unknown options in the Destination Options header of IPv6. This vulnerability can be exploited by an attacker to gain unauthorized access and potentially lead to a loss of Availability.
- Published
- Jan 16, 2024
- Updated
- Jun 17, 2026
- EPSS
- 2.1% · 81th percentile
- CWE
- CWE-835
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 2.1%
CISA SSVC decision
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 7.5
- CNA · TianoCore
- 7.5
- agree
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| tianocore | edk2 | cpe:2.3:a:tianocore:edk2 |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- tianocore edk2up to 202311 inclusive
Versions reported by the vendor
Affected version ranges reported by the assigning authority (TianoCore). Independent of NVD's CPE analysis and usually ahead of it.
TianoCore edk2
- edk2-stable202308affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | edk2-aarch64 | before 20220126gitbb1bba3d77-13.el8_10 | 20220126gitbb1bba3d77-13.el8_10 |
| AlmaLinux:8 | edk2-ovmf | before 20220126gitbb1bba3d77-13.el8_10 | 20220126gitbb1bba3d77-13.el8_10 |
| AlmaLinux:9 | edk2-aarch64 | before 20231122-6.el9 | 20231122-6.el9 |
| AlmaLinux:9 | edk2-ovmf | before 20231122-6.el9 | 20231122-6.el9 |
| AlmaLinux:9 | edk2-tools | before 20231122-6.el9 | 20231122-6.el9 |
| AlmaLinux:9 | edk2-tools-doc | before 20231122-6.el9 | 20231122-6.el9 |
| Debian:11 | edk2 | before 2020.11-2+deb11u3 | 2020.11-2+deb11u3 |
| Debian:12 | edk2 | before 2022.11-6+deb12u1 | 2022.11-6+deb12u1 |
| Debian:13 | edk2 | before 2023.11-6 | 2023.11-6 |
| openSUSE:Tumbleweed | ovmf | before 202402-1.1 | 202402-1.1 |
| Red Hat:enterprise_linux:8::appstream | edk2 | before 0:20220126gitbb1bba3d77-13.el8_10 | 0:20220126gitbb1bba3d77-13.el8_10 |
| Red Hat:enterprise_linux:8::appstream | edk2-aarch64 | before 0:20220126gitbb1bba3d77-13.el8_10 | 0:20220126gitbb1bba3d77-13.el8_10 |
| Red Hat:enterprise_linux:8::appstream | edk2-ovmf | before 0:20220126gitbb1bba3d77-13.el8_10 | 0:20220126gitbb1bba3d77-13.el8_10 |
| Red Hat:enterprise_linux:9::appstream | edk2 | before 0:20231122-6.el9 | 0:20231122-6.el9 |
| Red Hat:enterprise_linux:9::appstream | edk2-aarch64 | before 0:20231122-6.el9 | 0:20231122-6.el9 |
| Red Hat:enterprise_linux:9::appstream | edk2-ovmf | before 0:20231122-6.el9 | 0:20231122-6.el9 |
| Red Hat:enterprise_linux:9::crb | edk2-debugsource | before 0:20231122-6.el9 | 0:20231122-6.el9 |
| Red Hat:enterprise_linux:9::crb | edk2-tools | before 0:20231122-6.el9 | 0:20231122-6.el9 |
| Red Hat:enterprise_linux:9::crb | edk2-tools-debuginfo | before 0:20231122-6.el9 | 0:20231122-6.el9 |
| Red Hat:enterprise_linux:9::crb | edk2-tools-doc | before 0:20231122-6.el9 | 0:20231122-6.el9 |
| Red Hat:rhel_eus:8.8::appstream | edk2 | before 0:20220126gitbb1bba3d77-4.el8_8.6 | 0:20220126gitbb1bba3d77-4.el8_8.6 |
| Red Hat:rhel_eus:8.8::appstream | edk2-aarch64 | before 0:20220126gitbb1bba3d77-4.el8_8.6 | 0:20220126gitbb1bba3d77-4.el8_8.6 |
| Red Hat:rhel_eus:8.8::appstream | edk2-ovmf | before 0:20220126gitbb1bba3d77-4.el8_8.6 | 0:20220126gitbb1bba3d77-4.el8_8.6 |
| Rocky Linux:8 | edk2 | before 0:20220126gitbb1bba3d77-13.el8_10 | 0:20220126gitbb1bba3d77-13.el8_10 |
+7
Same product
tianocore: all recordsOther highest-scoring records for the same primary product.
- CVE-2021-38578Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize.39Monitor
- CVE-2023-45235Buffer Overflow in EDK II Network Package35Monitor
- CVE-2023-45234Buffer Overflow in EDK II Network Package35Monitor
- CVE-2023-45230Buffer Overflow in EDK II Network Package35Monitor
- CVE-2025-2296Un-verified kernel bypass Secure Boot mechanism in direct boot mode33Monitor
- CVE-2021-38575NetworkPkg/IScsiDxe has remotely exploitable buffer overflows.33Monitor
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 |
|---|---|---|
| almalinux:edk2-aarch64 | 20231122-6.el9 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:edk2-ovmf | 20231122-6.el9 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:edk2-tools | 20231122-6.el9 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:edk2-tools-doc | 20231122-6.el9 · AlmaLinux:9 | Package registry (OSV) |
| debian:edk2 | 2022.11-6+deb12u1 · Debian:12 | Package registry (OSV) |
| opensuse:ovmf | 202308-150600.5.9.1 · openSUSE:Leap 15.6 | Package registry (OSV) |
| red hat:edk2 | 0:20231122-6.el9 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:edk2-aarch64 | 0:20231122-6.el9 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:edk2-debugsource | 0:20231122-6.el9 · Red Hat:enterprise_linux:9::crb | Package registry (OSV) |
| red hat:edk2-ovmf | 0:20231122-6.el9 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:edk2-tools | 0:20231122-6.el9 · Red Hat:enterprise_linux:9::crb | Package registry (OSV) |
| red hat:edk2-tools-debuginfo | 0:20231122-6.el9 · Red Hat:enterprise_linux:9::crb | Package registry (OSV) |
| red hat:edk2-tools-doc | 0:20231122-6.el9 · Red Hat:enterprise_linux:9::crb | Package registry (OSV) |
| rocky linux:edk2 | 0:20231122-6.el9 · Rocky Linux:9 | Package registry (OSV) |
| suse:ovmf | 202208-150500.6.6.1 · SUSE:Linux Enterprise Micro 5.5 | Package registry (OSV) |
| suse:ovmf | 202308-150600.5.9.1 · SUSE:Linux Enterprise Module for Package Hub 15 SP6 | 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.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- Quarkslab Vulnerability Reports Teamfinder
- Doug Flickremediation developer
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2023-452330 days apartInfinite loop in EDK II Network Package31Monitor
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
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-primary
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
- packetstormsecurity.com/files/176574/PixieFail-Proof-Of-Concepts.html
- www.openwall.com/lists/oss-security/2024/01/16/2
- github.com/tianocore/edk2/security/advisories/GHSA-hc6x-cw6p-gj7h
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SJ42V7O7F4OU6R7QSQQECLB6LDHKZIMQ/
- security.netapp.com/advisory/ntap-20240307-0011/
- lists.debian.org/debian-lts-announce/2025/06/msg00007.html
- www.kb.cert.org/vuls/id/132380
Vendor advisories and official records. Exploit/PoC links are deliberately left out.