CVE-2022-34835

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-07-01. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 9.8Exploit: None knownExposed: 0

A fix is available — apply it.

In Das U-Boot through 2022.07-rc5, an integer signedness error and resultant stack-based buffer overflow in the "i2c md" command enables the corruption of the return address pointer of the do_i2c_md function.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation2% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
82%
KEV
Not listed

Published

June 30, 2022

Last Modified

May 12, 2026

Advisory Details (5)

Auto-updated Sep 16, 2026
Patch available. Sources: github_commit.
generic

SSA-577017

https://cert-portal.siemens.com/productcert/html/ssa-577017.html
generic

i2c: fix stack buffer overflow vulnerability in i2c md command (8f8c04bf) · Commits · u-boot / U-Boot · GitLab

https://source.denx.de/u-boot/u-boot/-/commit/8f8c04bf1ebbd2f72f1643e7ad9617dafa6e5409
generic Patch Available

[SECURITY] [DLA 4150-1] u-boot security update

https://lists.debian.org/debian-lts-announce/2025/05/msg00001.html
github_commit

commit 8f8c04bf1ebb (u-boot/u-boot)

Fix landed in u-boot/u-boot commit 8f8c04bf1ebb — awaiting tagged release

https://github.com/u-boot/u-boot/commit/8f8c04bf1ebbd2f72f1643e7ad9617dafa6e5409
generic

[PATCH] i2c: fix stack buffer overflow vulnerability in i2c md command

https://lists.denx.de/pipermail/u-boot/2022-June/486113.html

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuu-boot-exynos (2022.01+dfsg-2ubuntu2.3) @ jammy2026-05-20ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
u-boot2021.01+dfsg-52021.01+dfsg-5+deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
u-boot—2022.07+dfsg-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
u-boot—2022.07+dfsg-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
u-boot—2022.07+dfsg-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 7× in last 7d / 27× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 222 total refreshes for this CVE.

  1. 2026-09-20 20:13 UTCEPSS rescore
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  1. 2026-08-24 14:13 UTCEPSS rescore
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Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2022-34835?
CVE-2022-34835 is a critical vulnerability published on June 30, 2022. In Das U-Boot through 2022.07-rc5, an integer signedness error and resultant stack-based buffer overflow in the "i2c md" command enables the corruption of the return address pointer of the doi2cmd function.
When was CVE-2022-34835 disclosed?
CVE-2022-34835 was first published in the National Vulnerability Database on June 30, 2022, with the most recent update on May 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-34835 actively exploited?
CVE-2022-34835 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 18.0% of all scored CVEs.
What is the CVSS score of CVE-2022-34835?
CVE-2022-34835 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2022-34835?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-34835, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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