Home > Vulnerability Database > CVE-2022-42324

Mend.io Vulnerability Database

CVE-2022-42324

Date: November 1, 2022

Oxenstored 32->31 bit integer truncation issues Integers in Ocaml are 63 or 31 bits of signed precision. The Ocaml Xenbus library takes a C uint32_t out of the ring and casts it directly to an Ocaml integer. In 64-bit Ocaml builds this is fine, but in 32-bit builds, it truncates off the most significant bit, and then creates unsigned/signed confusion in the remainder. This in turn can feed a negative value into logic not expecting a negative value, resulting in unexpected exceptions being thrown. The unexpected exception is not handled suitably, creating a busy-loop trying (and failing) to take the bad packet out of the xenstore ring.

Language: C

Severity Score

5.5

Related Resources (14)

Url: https://security.gentoo.org/glsa/202402-07

Url: https://security-tracker.debian.org/tracker/CVE-2022-42324

Url: http://xenbits.xen.org/xsa/advisory-420.html

Url: https://nvd.nist.gov/vuln/detail/CVE-2022-42324

Url: http://www.openwall.com/lists/oss-security/2022/11/01/10

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/

Url: https://xenbits.xenproject.org/xsa/advisory-420.txt

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ/

Url: https://www.debian.org/security/2022/dsa-5272

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ/

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/

Url: https://www.mend.io/vulnerability-database/CVE-2022-42324

Severity Score

5.5

Weakness Type (CWE)

Buffer Errors

CWE-119

Incorrect Conversion between Numeric Types

CWE-681

CVSS v3.1

Base Score:	5.5
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	LOW
Privileges Required (PR):	LOW
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	HIGH

Mend.io Vulnerability Database

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CVE-2022-42324

Date: November 1, 2022

Language: C

Severity Score

Related Resources (14)

Severity Score

Weakness Type (CWE)

CVSS v3.1

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