CVE-2022-34835

Exp

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.

Published: 2022-06-29 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-34835 is rated High Exploit Risk (81.2/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.67%). 2 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.19% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2022-34835

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2022-34835

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.47% 1.67% +1.19%
2 2026-06-09 0.42% 0.47% +0.06%
3 2026-04-20 — 0.42% —

Full EPSS history (21 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-34835

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2022-34835

GitHub Security Advisory for CVE-2022-34835

GHSA-9gfq-p9vq-r563 · Severity: critical — In Das U-Boot through 2022.07-rc5, an integer signedness error and resultant stack-based buffer...

OS Trackers for CVE-2022-34835

vendor priority summary link
debian not yet assigned CVE-2022-34835 not yet assigned priority: Debian including 1 source packages (u-boot), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2022-34835
suse high CVE-2022-34835 severity important: SUSE including 184 source package names (u-boot-avnetultra96rev1-2021.01-150300.7.15.1, u-boot-avnetultra96rev1-2021.10-150400.4.8.1, …), 316 product×package rows across 38 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 6, … (38 product lines)): Fixed 316. https://www.suse.com/security/cve/CVE-2022-34835/
ubuntu medium CVE-2022-34835 medium priority: Ubuntu including 1 source packages (u-boot), 14 status rows across 14 suites (bionic, focal, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 7, released 3, needs-triage 2, DNE 1, ignored 1. https://ubuntu.com/security/CVE-2022-34835

Affected software / configurations for CVE-2022-34835

Vendor Product Version Raw CPE
denx u-boot < 2022.07 cpe:2.3:a:denx:u-boot:*:*:*:*:*:*:*:*
denx u-boot 2022.07 cpe:2.3:a:denx:u-boot:2022.07:rc1:*:*:*:*:*:*
denx u-boot 2022.07 cpe:2.3:a:denx:u-boot:2022.07:rc2:*:*:*:*:*:*
denx u-boot 2022.07 cpe:2.3:a:denx:u-boot:2022.07:rc3:*:*:*:*:*:*
denx u-boot 2022.07 cpe:2.3:a:denx:u-boot:2022.07:rc4:*:*:*:*:*:*
denx u-boot 2022.07 cpe:2.3:a:denx:u-boot:2022.07:rc5:*:*:*:*:*:*

References for CVE-2022-34835

cvelogic Threat Intelligence