CVE-2023-48235
vim: overflow in ex address parsing
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · November 16, 2023
Updated · June 26, 2026
Description
A flaw as found in Vim, an open source command line text editor. When parsing relative ex addresses, one may unintentionally cause an overflow. Ironically, this happens in the existing overflow check because the line number becomes negative and LONG_MAX - lnum will cause the overflow. The impact is low because user interaction is required and a crash may not happen in all situations.
Statement
All versions of Vim shipped with Red Hat Enterprise Linux are affected, because of the presence of vulnerable code in our code-base.
Red Hat Product Security has rated this issue as having a Low security impact, because the "victim" has to run an untrusted file IN SCRIPT MODE. Someone who is running untrusted files in script mode is equivalent to someone just taking a random python script and running it.
Since Red Hat Enterprise Linux 6, 7 are Out-of-Support-Scope for Low/Moderate flaws, the issue is not currently planned to be addressed in future updates for RHEL-6,7. Only Important and Critical severity flaws will be addressed at this time.
For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/ and Red Hat Enterprise Linux Life Cycle & Updates Policy: https://access.redhat.com/support/policy/updates/errata/.
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 do not 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 · 4.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CWE-190 · Integer Overflow or Wraparound