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CVE-2022-2639

Date: September 1, 2022

An integer coercion error was found in the openvswitch kernel module. Given a sufficiently large number of actions, while copying and reserving memory for a new action of a new flow, the reserve_sfa_size() function does not return -EMSGSIZE as expected, potentially leading to an out-of-bounds write access. This flaw allows a local user to crash or potentially escalate their privileges on the system.

Severity Score

Related Resources (7)

https://nvd.nist.gov/vuln/detail/CVE-2022-2639
https://security-tracker.debian.org/tracker/CVE-2022-2639
https://access.redhat.com/security/cve/CVE-2022-2639
https://bugzilla.redhat.com/show_bug.cgi?id=2084479
https://github.com/torvalds/linux/commit/cefa91b2332d7009bc0be5d951d6cbbf349f90f8
https://people.canonical.com/~ubuntu-security/cve/CVE-2022-2639
https://www.mend.io/vulnerability-database/CVE-2022-2639

Severity Score

Weakness Type (CWE)

Integer Underflow (Wrap or Wraparound)

CWE-191

Out-of-bounds Write

CWE-787

Integer Coercion Error

CWE-192

Incorrect Conversion between Numeric Types

CWE-681

CVSS v3.1

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

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