CVE-2024-41965 Vim < v9.1.0648 has a double-free in dialog_changed()

2024-08-0121:44:09

CWE-416

GitHub_M

github.com

vim

command line text editor

double-free vulnerability

dialog_changed

buffer

heap-use-after-free

crash

security patch

CVSS3

4.2

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L

AI Score

Confidence

Low

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

Vim is an open source command line text editor. double-free in dialog_changed() in Vim < v9.1.0648. When abandoning a buffer, Vim may ask the user what to do with the modified buffer. If the user wants the changed buffer to be saved, Vim may create a new Untitled file, if the buffer did not have a name yet. However, when setting the buffer name to Unnamed, Vim will falsely free a pointer twice, leading to a double-free and possibly later to a heap-use-after-free, which can lead to a crash. The issue has been fixed as of Vim patch v9.1.0648.

CNA Affected

[
  {
    "vendor": "vim",
    "product": "vim",
    "versions": [
      {
        "version": "< 9.1.0648",
        "status": "affected"
      }
    ]
  }
]