CVE-2022-33967: squashfs filesystem implementation of U-Boot versions from v2020.10-rc2 to v2022.07-rc5 contains a heap-based buffer overflow vulnerability
Noroxi assessment
Priority: Monitor (action score 31/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.55% (FIRST EPSS).
- Someone with local access to the system can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
- Fixed version: u-boot (Debian:11) 2021.01+dfsg-5+deb11u1; u-boot (Debian:12) 2022.07+dfsg-1; u-boot (openSUSE:Leap 15.3) 2021.01-150300.7.15.1.
Low priority for now. Upgrade to u-boot (Debian:11) 2021.01+dfsg-5+deb11u1; u-boot (Debian:12) 2022.07+dfsg-1; u-boot (openSUSE:Leap 15.3) 2021.01-150300.7.15.1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
squashfs filesystem implementation of U-Boot versions from v2020.10-rc2 to v2022.07-rc5 contains a heap-based buffer overflow vulnerability due to a defect in the metadata reading process. Loading a specially crafted squashfs image may lead to a denial-of-service (DoS) condition or arbitrary code execution.
- Published
- Jul 20, 2022
- Updated
- Jun 17, 2026
- EPSS
- 0.5% · 46th percentile
- CWE
- CWE-787
Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.5%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| denx | u-boot | cpe:2.3:a:denx:u-boot |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- denx u-boot2020.10
- denx u-boot2021.01
- denx u-boot2021.04
- denx u-boot2022.01
- denx u-boot2022.04
- denx u-boot2022.07
Versions reported by the vendor
Affected version ranges reported by the assigning authority (jpcert). Independent of NVD's CPE analysis and usually ahead of it.
DENX Software Engineering U-Boot
- versions from v2020.10-rc2 to v2022.07-rc5affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:11 | u-boot | before 2021.01+dfsg-5+deb11u1 | 2021.01+dfsg-5+deb11u1 |
| Debian:12 | u-boot | before 2022.07+dfsg-1 | 2022.07+dfsg-1 |
| openSUSE:Leap 15.3 | u-boot | before 2021.01-150300.7.15.1 | 2021.01-150300.7.15.1 |
| openSUSE:Leap 15.3 | u-boot-avnetultra96rev1 | before 2021.01-150300.7.15.1 | 2021.01-150300.7.15.1 |
| openSUSE:Leap 15.3 | u-boot-bananapim64 | before 2021.01-150300.7.15.1 | 2021.01-150300.7.15.1 |
| openSUSE:Leap 15.3 | u-boot-dragonboard410c | before 2021.01-150300.7.15.1 | 2021.01-150300.7.15.1 |
| openSUSE:Leap 15.3 | u-boot-dragonboard820c | before 2021.01-150300.7.15.1 | 2021.01-150300.7.15.1 |
| openSUSE:Leap 15.3 | u-boot-evb-rk3399 | before 2021.01-150300.7.15.1 | 2021.01-150300.7.15.1 |
| openSUSE:Leap 15.3 | u-boot-firefly-rk3399 | before 2021.01-150300.7.15.1 | 2021.01-150300.7.15.1 |
| openSUSE:Leap 15.3 | u-boot-geekbox | before 2021.01-150300.7.15.1 | 2021.01-150300.7.15.1 |
| openSUSE:Leap 15.3 | u-boot-hikey | before 2021.01-150300.7.15.1 | 2021.01-150300.7.15.1 |
| openSUSE:Leap 15.3 | u-boot-khadas-vim | before 2021.01-150300.7.15.1 | 2021.01-150300.7.15.1 |
| openSUSE:Leap 15.3 | u-boot-khadas-vim2 | before 2021.01-150300.7.15.1 | 2021.01-150300.7.15.1 |
| openSUSE:Leap 15.3 | u-boot-libretech-ac | before 2021.01-150300.7.15.1 | 2021.01-150300.7.15.1 |
| openSUSE:Leap 15.3 | u-boot-libretech-cc | before 2021.01-150300.7.15.1 | 2021.01-150300.7.15.1 |
| openSUSE:Leap 15.3 | u-boot-ls1012afrdmqspi | before 2021.01-150300.7.15.1 | 2021.01-150300.7.15.1 |
| openSUSE:Leap 15.3 | u-boot-mvebudb-88f3720 | before 2021.01-150300.7.15.1 | 2021.01-150300.7.15.1 |
| openSUSE:Leap 15.3 | u-boot-mvebudbarmada8k | before 2021.01-150300.7.15.1 | 2021.01-150300.7.15.1 |
| openSUSE:Leap 15.3 | u-boot-mvebuespressobin-88f3720 | before 2021.01-150300.7.15.1 | 2021.01-150300.7.15.1 |
| openSUSE:Leap 15.3 | u-boot-mvebumcbin-88f8040 | before 2021.01-150300.7.15.1 | 2021.01-150300.7.15.1 |
| openSUSE:Leap 15.3 | u-boot-nanopia64 | before 2021.01-150300.7.15.1 | 2021.01-150300.7.15.1 |
| openSUSE:Leap 15.3 | u-boot-odroid-c2 | before 2021.01-150300.7.15.1 | 2021.01-150300.7.15.1 |
| openSUSE:Leap 15.3 | u-boot-odroid-c4 | before 2021.01-150300.7.15.1 | 2021.01-150300.7.15.1 |
| openSUSE:Leap 15.3 | u-boot-odroid-n2 | before 2021.01-150300.7.15.1 | 2021.01-150300.7.15.1 |
+65
Same product
denx: all recordsOther highest-scoring records for the same primary product.
- CVE-2022-34835In Das U-Boot through 2022.07-rc5, an integer signedness error and resultant stack-based buffer overflow in the "i2c md" command enables the40Plan
- CVE-2022-30767nfs_lookup_reply in net/nfs.c in Das U-Boot through 2022.04 (and through 2022.07-rc2) has an unbounded memcpy with a failed length check, le40Plan
- CVE-2020-8432In Das U-Boot through 2020.01, a double free has been found in the cmd/gpt.c do_rename_gpt_parts() function.40Plan
Published before and after this one in the same product
- ← EarlierCVE-2022-30790Jun 8, 2022 · Das U-Boot 2022.01 has a Buffer Overflow, a different issue than CVE-2022-30552.31Monitor
- ← EarlierCVE-2022-33103Jul 1, 2022 · Das U-Boot from v2020.10 to v2022.07-rc3 was discovered to contain an out-of-bounds write via the function sqfs_readdir().31Monitor
- Later →CVE-2022-2347Sep 23, 2022 · Unchecked Download size in Uboot28Monitor
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:u-boot | 2022.07+dfsg-1 · Debian:12 | Package registry (OSV) |
| opensuse:u-boot | 2021.01-150300.7.15.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:u-boot-avnetultra96rev1 | 2021.01-150300.7.15.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:u-boot-bananapim64 | 2021.01-150300.7.15.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:u-boot-dragonboard410c | 2021.01-150300.7.15.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:u-boot-dragonboard820c | 2021.01-150300.7.15.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:u-boot-evb-rk3399 | 2021.01-150300.7.15.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:u-boot-firefly-rk3399 | 2021.01-150300.7.15.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:u-boot-geekbox | 2021.01-150300.7.15.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:u-boot-hikey | 2021.01-150300.7.15.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:u-boot-khadas-vim | 2021.01-150300.7.15.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:u-boot-khadas-vim2 | 2021.01-150300.7.15.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| opensuse:u-boot-libretech-ac | 2021.01-150300.7.15.1 · openSUSE:Leap 15.3 | Package registry (OSV) |
| suse:u-boot | 2021.01-150300.7.15.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP3 | Package registry (OSV) |
| suse:u-boot-rpiarm64 | 2021.01-150300.7.15.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP3 | 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.
No credits in the CNA record.
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.
- No account or password is required.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-787 · Out-of-bounds WriteCVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/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
Show all references (3 more)Show less
Vendor advisories and official records. Exploit/PoC links are deliberately left out.