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CVE-2022-34835

32
FAUCET Score

CVE-2022-34835 is a critical stack-based buffer overflow vulnerability in Das U-Boot through version 2022.07-rc5, specifically within the "i2c md" command. This flaw, rated 9.8 CVSS, allows an unauthenticated attacker to remotely corrupt the return address pointer of the do_i2c_md function, leading to full compromise (confidentiality, integrity, and availability). There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 2022.07CPE matchmatch criteria
cpe:2.3:a:denx:u-boot:*:*:*:*:*:*:*:*
2022.07CPE matchmatch criteria
cpe:2.3:a:denx:u-boot:2022.07:rc1:*:*:*:*:*:*
2022.07CPE matchmatch criteria
cpe:2.3:a:denx:u-boot:2022.07:rc2:*:*:*:*:*:*
2022.07CPE matchmatch criteria
cpe:2.3:a:denx:u-boot:2022.07:rc3:*:*:*:*:*:*
2022.07CPE matchmatch criteria
cpe:2.3:a:denx:u-boot:2022.07:rc4:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.04%
Probability of exploitation in next 30 days
EPSS Percentile
79.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0204 is in the 68th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

microsoft2022-Jun/CVE-2022-34835

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.

Jun 14, 2022

References

cert-portal.siemens.com / productcert/html/ssa-577017.html
lists.debian.org / debian-lts-announce/2025/05/msg00001.html
github.com / u-boot/u-boot/commit/8f8c04bf1ebbd2f72f1643e7ad9617dafa6e5409
ExploitPatchThird Party Advisory
lists.denx.de / pipermail/u-boot/2022-June/486113.html
ExploitPatchVendor Advisory
source.denx.de / u-boot/u-boot/-/commit/8f8c04bf1ebbd2f72f1643e7ad9617dafa6e5409
PatchVendor Advisory