CVE-2022-33070
protobuf-c: invalid arithmetic shift via the function parse_tag_and_wiretype may lead to DoS
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 23, 2022
Updated · November 21, 2025
Description
A flaw was found in protobuf-c. The issue occurs due to an invalid arithmetic shift via the parse_tag_and_wiretype in the protobuf-c/protobuf-c.c function. This flaw allows attackers to cause a denial of service (DoS) via unspecified vectors.
Statement
The vulnerability has been marked low as exploiting this vulnerability is highly unlikely to be possible as user input isn't taken by the vulnerable functions.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 3.1CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
CWE-400 · Uncontrolled Resource Consumption