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Bug 856043 (CVE-2022-33070) - <dev-libs/protobuf-c-1.4.1: undefined behaviour (invalid arithmetic shift)
Summary: <dev-libs/protobuf-c-1.4.1: undefined behaviour (invalid arithmetic shift)
Alias: CVE-2022-33070
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal minor (vote)
Assignee: Gentoo Security
Whiteboard: B3 [glsa? cleanup]
Depends on: 866440
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Reported: 2022-07-03 02:15 UTC by John Helmert III
Modified: 2022-08-25 22:57 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---


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Description John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2022-07-03 02:15:06 UTC
CVE-2022-33070 (

Protobuf-c v1.4.0 was discovered to contain an invalid arithmetic shift via the function parse_tag_and_wiretype in protobuf-c/protobuf-c.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via unspecified vectors.
Comment 1 Larry the Git Cow gentoo-dev 2022-07-11 02:01:51 UTC
The bug has been referenced in the following commit(s):

commit 6ef86ad77ac20061ad417f415498bd98573fa5ec
Author:     Sam James <>
AuthorDate: 2022-07-11 02:01:17 +0000
Commit:     Sam James <>
CommitDate: 2022-07-11 02:01:40 +0000

    dev-libs/protobuf-c: add 1.4.1
    Signed-off-by: Sam James <>

 dev-libs/protobuf-c/Manifest                |  1 +
 dev-libs/protobuf-c/protobuf-c-1.4.1.ebuild | 53 +++++++++++++++++++++++++++++
 2 files changed, 54 insertions(+)